Abstract Introduction Material & Methods Lithostratigraphy Petrography, Biostratigraphy & Sr-isotope Analysis Conclusions References Figures Tables Appendix 1 Appendix 2 PDF version

Appendix 2

Dinocyst sample descriptions.

Collier-Seminole State Park core

The Collier-Seminole State Park core (W-17360) was assigned U.S. Geological Survey Paleobotanical Number R5195.

9.3-9.6 ft depth (R5195 R) did not yield dinocysts.

14.9-15.2 ft depth (R5195 Q) did not yield dinocysts.

27.7-28.1 ft depth (R5195 P) did not yield dinocysts.

46.8-47.1 ft depth (R5195 0) contains two specimens of Polysphaeridium zoharyi (Rossignol) Bujak et al. Age: Cenozoic.

54.0-54.5 ft depth (R5195 N) contains a single gonyaulacacean specimen that is presumably reworked. Age: Cenozoic.

65.5-66.0 ft depth (R5195 M) did not yield dinocysts.

87.4-87.8 ft depth (R5195 L) contains a moderately well preserved, moderately diverse dinocyst assemblage dominated by Spiniferites spp. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Ataxiodinium Reid ? n. sp.
Cyclopsiella? Drugg & Loeblich sp.
Dapsilidinium pseudocolligerum (Stover) Bujak et al.
Invertocysta Edwards sp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Melitasphaeridium Harland & Hill sp.
Multispinula quanta Bradford
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Reticulatasphaera actinocoronata (Benedek) Bujak & Matsuoka
Selenopemphix Benedek sp.
Spiniferites Mantell spp.
Tuberculodinium vancampoae (Rossignol) Wall

Age: late middle Miocene, late Miocene, or Pliocene, based on the overlap of A. andalousiensis (earliest occurrence near the middle/late Miocene boundary) and D. pseudocolligerum (latest occurrence in the Pliocene).

100.4-100.8 ft depth (R5195 K) contains a well preserved, diverse dinocyst assemblage dominated by Spiniferites spp. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Brigantedinium Reid sp.
Dapsilidinium pseudocolligerum (Stover) Bujak et al.
Forma D of Wrenn and Kokinos (1986)
Impagidinium paradoxum (Wall) Stover and Evitt
Impagidinium patulum (Wall) Stover & Evitt
Invertocysta Edwards sp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Melitasphaeridium Harland & Hill sp.
Multispinula quanta Bradford
Operculodinium centrocarpum (Deflandre & Cookson) Wall
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Spiniferites Mantell spp.
Spiniferites mirabilis (Rossignol) Sarjeant
Tectatodinium pellitum Wall
Trinovantedinium Reid sp.
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late middle Miocene, late Miocene, or Pliocene, based on the overlap of A. andalousiensis (earliest occurrence near the middle/late Miocene boundary) and D. pseudocolligerum (latest occurrence in the Pliocene). The presence of Impagidinium spp. may indicate a more offshore depositional environment than other samples from this core.

124.0-124.6 ft depth (R5195 J) contains a moderately diverse dinocyst assemblage dominated by Spiniferites spp. Preservation is fair. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Brigantedinium Reid sp.
Dapsilidinium pseudocolligerum (Stover) Bujak et al.
Hystrichokolpoma rigaudiae Deflandre & Cookson
Invertocysta Edwards sp.
Lejeunecysta Artzner & Dörhöfer sp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Melitasphaeridium Harland & Hill sp.
Multispinula quanta Bradford
Operculodinium centrocarpum (Deflandre & Cookson) Wall
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Selenopemphix Benedek sp.
Spiniferites Mantell spp.
Spiniferites mirabilis (Rossignol) Sarjeant
Tectatodinium pellitum Wall
Trinovantedinium Reid sp.
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late middle Miocene, late Miocene, or Pliocene, based on the overlap of A. andalousiensis (earliest occurrence near the middle/late Miocene boundary) and D. pseudocolligerum (latest occurrence in the Pliocene).

128.6-129.0 ft depth (R5195 I) contains abundant black organic material (charcoal) and a sparse, poorly preserved dinocyst assemblage dominated by P. zoharyi. Dinocysts are:

Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Spiniferites Mantell spp.

Age: Cenozoic.

139.3-139.9 ft depth (R5195 H) did not yield dinocysts.

141.4-141.7 ft depth (R5195 G) contains a single specimen of Spiniferites Mantell spp. Age: Cenozoic.

151.7-152.2 ft depth (R5195 F) did not yield dinocysts.

159.3-159.7 ft depth (R5195 E) contains a very sparse, poorly preserved dinocyst assemblage dominated by Spiniferites Mantell spp. Dinocysts are:

Hystrichokolpoma rigaudiae Deflandre & Cookson
Operculodinium centrocarpum (Deflandre & Cookson) Wall
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Spiniferites Mantell spp.

Age: Cenozoic.

170.2-170.8 ft depth (R5195 D) did not yield dinocysts.

175.4-175.8 ft depth (R5195 C) contains a very sparse, poorly preserved dinocyst assemblage dominated by a flat, oblong form that may or may not be a dinocyst. Dinocysts are:

unknown oblong form
Batiacasphaera sphaerica Stover ?
Hystrichosphaeropsis obscura Habib
Lejeunecysta Artzner & Dörhöfer sp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Operculodinium centrocarpum (Deflandre & Cookson) Wall
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Spiniferites Mantell spp.
freshwater alga Pediastrum

Age: late middle or late Miocene, based on stratigraphic position and the presence of H. obscura (latest occurrence in the late Miocene).

179.2-179.7 ft depth (R5195 B) contains a well preserved, moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell. Clear platy debris is conspicuously present. Dinocysts are:

Cyclopsiella Drugg & Loeblich ? sp.
Erymnodinium delectabile (Verteuil & Norris) Lentin et al.
Heteraulacacysta Drugg & Loeblich sp.
Hystrichokolpoma rigaudiae Deflandre & Cookson
Hystrichosphaeropsis obscura Habib
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Nematosphaeropsis Deflandre & Cookson sp.
Operculodinium centrocarpum (Deflandre & Cookson) Wall
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Selenopemphix brevispinosa Head et al. subsp. brevispinosa
Spiniferites Mantell spp.
Tectatodinium pellitum Wall
Trinovantedinium Reid sp.
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late middle Miocene or late Miocene, based on the ranges of E. delectabile (late middle and late Miocene) and H. obscura (latest occurrence in the late Miocene).

187.8-188.0 ft depth (R5195 A) contains a moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell. Preservation is fair. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Dapsilidinium pseudocolligerum (Stover) Bujak et al.
Erymnodinium delectabile (Verteuil & Norris) Lentin et al.
Hystrichokolpoma rigaudiae Deflandre & Cookson
Hystrichosphaeropsis obscura Habib
Lejeunecysta Artzner & Dörhöfer spp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Melitasphaeridium choanophorum (Deflandre & Cookson) Harland & Hill
Multispinula quanta Bradford
Nematosphaeropsis Deflandre & Cookson sp.
Operculodinium centrocarpum (Deflandre & Cookson) Wall
Spiniferites Mantell spp.
Sumatradinium hispidum (Drugg) Lentin & Williams
Tectatodinium pellitum Wall
Trinovantedinium Reid sp.
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late middle Miocene or late Miocene, based on the ranges of E. delectabile (late middle and late Miocene), A. andalousiensis (earliest occurrence near the middle/late Miocene boundary), and H. obscura (latest occurrence in the late Miocene).

Old Pump Road core

The Old Pump Road core (W-17361) was assigned U.S. Geological Survey Paleobotanical Number R5193.

9.9-10.7 ft depth (R5193 M) did not yield dinocysts.

39.7-45.0 ft depth (R5193 L) did not yield dinocysts.

95.2-96.0 ft depth (R5193 J) did not yield dinocysts.

122.0-122.4 ft depth (R5193 I) contains a moderately diverse dinocyst assemblage dominated by Polysphaeridium zoharyi (Rossignol) Bujak et al. Preservation is fair. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Ataxiodinium Reid ? n. sp.
Dapsilidinium pseudocolligerum (Stover) Bujak et al.
Hystrichokolpoma rigaudiae Deflandre & Cookson
Impagidinium paradoxum (Wall) Stover and Evitt
Lejeunecysta Artzner & Dörhöfer spp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Multispinula quanta Bradford
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Reticulatasphaera actinocoronata (Benedek) Bujak & Matsuoka
Selenopemphix Benedek sp.
Spiniferites mirabilis (Rossignol) Sarjeant
Spiniferites Mantell spp.
Tectatodinium pellitum Wall
Tuberculodinium vancampoae (Rossignol) Wall

Age: late middle Miocene, late Miocene, or Pliocene, based on the overlap of A. andalousiensis (earliest occurrence near the middle/late Miocene boundary) and D. pseudocolligerum (latest occurrence in the Pliocene).

145.4-146.0 ft depth (R5193 G) contains a moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell. Preservation is fair; reworked specimens are present. Dinocysts are:

Forma D of Wrenn and Kokinos (1986)
Habibacysta tectata Head et al.
Hystrichokolpoma rigaudiae Deflandre & Cookson
Lejeunecysta Artzner & Dörhöfer spp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Multispinula quanta Bradford
Nematosphaeropsis Deflandre & Cookson sp.
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Selenopemphix brevispinosa Head et al. subsp. brevispinosa
Selenopemphix Benedek sp.
Spiniferites Mantell spp.
Tuberculodinium vancampoae (Rossignol) Wall
reworked specimens, Paleocene or older

Age: middle or late Miocene, based on the range overlap of H. tectata (earliest occurrence in the middle Miocene) and S. brevispinosa brevispinosa (latest occurrence in the late Miocene)

183.8-185.0 ft depth (R5193 D) did not yield dinocysts.

186.0-186.9 ft depth (R5193 C) did not yield dinocysts.

189.4-189.7 ft depth (R5193 B) did not yield dinocysts.

195.2-196.0 ft depth (R5193 A) did not yield dinocysts.

Fakahatchee Strand-Ranger Station core

The Fakahatchee Strand-Ranger Station core (W-17393) was assigned U.S. Geological Survey Paleobotanical Number R5196.

13.3-13.6 ft depth (R5196 J) contains a single specimen of Polysphaeridium zoharyi (Rossignol) Bujak et al. and single fragment of Operculodinium Wall sp.

28.4-28.8 ft depth (R5196 I) contains a single specimen of Spiniferites Mantell sp. and an unidentifiable dinocyst fragment.

40.5-40.8 ft depth (R5196 H) contains a single fragment of Operculodinium Wall sp.

55.8-56.3 ft depth (R5196 G) contains a single specimen of Operculodinium Wall sp., two unidentifiable dinocyst fragments, and two specimens of the Cretaceous genus Ovoidinium Davey.

78.3-78.8 ft depth (R5196 F) contains a moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell. Preservation is fair. Dinocysts are:

Ataxiodinium Reid ? n. sp.
Erymnodinium delectabile (de Verteuil & Norris) Lentin et al.
Habibacysta tectata Head et al.
Invertocysta lacrymosa Edwards
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Multispinula quanta Bradford
Nematosphaeropsis rigida Wrenn
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Selenopemphix armageddonensis de Verteuil & Norris
Selenopemphix Benedek sp.
Spiniferites Mantell spp.
Spiniferites mirabilis (Rossignol) Sarjeant
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late Miocene. S. armageddonensis and E. delectabile overlap in zone DN 10 of de Verteuil and Norris (1996) in the late late Miocene.

97.9-98.6 ft depth (R5196 E) contains a moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell. Preservation is fair. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Cyclopsiella Drugg & Loeblich ? sp.
Erymnodinium delectabile (Verteuil & Norris) Lentin et al. ?
Forma D of Wrenn and Kokinos (1986)
Habibacysta tectata Head et al.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Nematosphaeropsis Deflandre & Cookson sp.
Nematosphaeropsis rigida Wrenn
Operculodinium centrocarpum (Deflandre & Cookson) Wall
Operculodinium Wall spp.
Spiniferites Mantell spp.
Spiniferites mirabilis (Rossignol) Sarjeant
Tectatodinium pellitum Wall
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late middle Miocene or late Miocene, based on stratigraphic position and the presence of H. tectata (earliest occurrence in the middle Miocene).

136.4-137.0 ft depth (R5196 D) contains a low diversity dinocyst assemblage dominated by species of Spiniferites Mantell. Preservation is fair. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Batiacasphaera sphaerica Stover ?
Cyclopsiella Drugg & Loeblich ? sp.
Multispinula quanta Bradford
Nematosphaeropsis Deflandre & Cookson sp.
Operculodinium Wall spp.
Spiniferites Mantell spp.
Tectatodinium pellitum Wall
Trinovantedinium Reid ? sp.
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late middle or late Miocene, based on the overlapping ranges of A. andalousiensis (earliest occurrence near the middle/late Miocene boundary) and B. sphaerica (latest occurrence in the late Miocene).

157.0-158.1 ft depth (R5196 B/C) contains a low diversity dinocyst assemblage dominated by species of Spiniferites Mantell. Preservation is fair. Dinocysts are:

Hystrichokolpoma rigaudiae Deflandre & Cookson
Impagidinium paradoxum (Wall) Stover and Evitt ?
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Melitasphaeridium Harland & Hill sp.
Nematosphaeropsis Deflandre & Cookson sp.
Operculodinium centrocarpum (Deflandre & Cookson) Wall
Spiniferites Mantell spp.
Trinovantedinium Reid sp. ?
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late Oligocene, Miocene, Pliocene, or Pleistocene, based on the ranges of the taxa present; however, Pliocene and Pleistocene can be excluded based on the Miocene age assigned to overlying samples.

159.8-160.3 ft depth (R5196 A) contains a low diversity dinocyst assemblage dominated by species of Spiniferites Mantell. Preservation is fair. Dinocysts are:

Hystrichokolpoma rigaudiae Deflandre & Cookson
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Operculodinium centrocarpum (Deflandre & Cookson) Wall
Spiniferites Mantell spp.
Spiniferites mirabilis (Rossignol) Sarjeant
Tuberculodinium vancampoae (Rossignol) Wall

Age: late Oligocene, Miocene, Pliocene, or Pleistocene, based on the ranges of the taxa present; however, Pliocene and Pleistocene can be excluded based on the Miocene age assigned to overlying samples.

Fakahatchee Strand Gate 12 core

The Fakahatchee Strand Gate 12 core (W-17389) was assigned U.S. Geological Survey Paleobotanical Number R5194.

36.0-36.3 ft depth (R5194 G) did not yield dinocysts.

62.5-63.0 ft depth (R5194 F) contains a well preserved, moderately diverse dinocyst assemblage dominated by Polysphaeridium zoharyi (Rossignol) Bujak et al. Dinocysts are:

Habibacysta tectata Head et al. ?
Multispinula quanta Bradford
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Selenopemphix Benedek sp.
Spiniferites Mantell spp.
Sumatradinium or Barssidinium sp.
Trinovantedinium papulum de Verteuil & Norris
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: Miocene or younger.

88.1-88.5 ft depth (R5194 E) contains a well preserved, moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell and Habibacysta tectata Head et al. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Dapsilidinium pseudocolligerum (Stover) Bujak et al.
Forma D of Wrenn and Kokinos (1986)
Habibacysta tectata Head et al.
Hystrichokolpoma rigaudiae Deflandre & Cookson
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Nematosphaeropsis Deflandre & Cookson sp.
Operculodinium Wall spp.
Spiniferites Mantell spp.
Spiniferites pseudofurcatus (Klumpp) Sarjeant
Tectatodinium pellitum Wall

Age: late middle Miocene, late Miocene, or Pliocene, based on the overlap of A. andalousiensis (earliest occurrence near the middle/late Miocene boundary) and D. pseudocolligerum (latest occurrence in the Pliocene).

126.2-126.5 ft depth (R5194 C) contains a moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell and Operculodinium Wall. Preservation is fair. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Ataxiodinium Reid ? n. sp.
Dapsilidinium pseudocolligerum (Stover) Bujak et al.
Erymnodinium delectabile (Verteuil & Norris) Lentin et al. ?
Hystrichokolpoma rigaudiae Deflandre & Cookson
Impagidinium Stover & Evitt sp.
Lejeunecysta Artzner & Dörhöfer spp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Multispinula quanta Bradford
Nematosphaeropsis rigida Wrenn
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Selenopemphix brevispinosa Head et al. subsp. brevispinosa
Spiniferites Mantell spp.
Spiniferites mirabilis (Rossignol) Sarjeant
Tectatodinium pellitum Wall
Trinovantedinium papulum de Verteuil & Norris
Tuberculodinium vancampoae (Rossignol) Wall

Age: late middle Miocene or late Miocene, based on the ranges of E. delectabile (late middle and late Miocene) and A. andalousiensis (earliest occurrence near the middle/late Miocene boundary).

157.5-158.0 ft depth (R5194 B) did not yield dinocysts.

218.2-218.5 ft depth (R5194 A) contains a moderately diverse, well preserved dinocyst assemblage dominated by Lingulodinium machaerophorum (Deflandre & Cookson) Wall, Erymnodinium delectabile (Verteuil & Norris) Lentin et al., and Lejeunecysta Artzner & Dörhöfer spp. Dinocysts are:

Erymnodinium delectabile (Verteuil & Norris) Lentin et al. ?
Heteraulacacysta Drugg & Loeblich sp.
Hystrichosphaeropsis obscura Habib
Impagidinium Stover & Evitt sp.
Lejeunecysta Artzner & Dörhöfer spp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Multispinula quanta Bradford
Nematosphaeropsis Deflandre & Cookson sp.
Operculodinium Wall sp.
Selenopemphix Benedek sp.
Selenopemphix brevispinosa Head et al. subsp. brevispinosa
Selenopemphix brevispinosa Head et al. subsp. conspicua de Verteuil & Norris
Spiniferites Mantell spp.
Spiniferites mirabilis (Rossignol) Sarjeant
Sumatradinium druggii Lentin et al.
Sumatradinium hispidum (Drugg) Lentin & Williams
Tectatodinium pellitum Wall
Trinovantedinium Reid spp.
Tuberculodinium vancampoae (Rossignol) Wall

Age: late middle Miocene or late Miocene, based on the ranges of E. delectabile (late middle and late Miocene) and H. obscura (latest occurrence in the late Miocene).

Fakahatchee Strand-Jones Grade core

The Fakahatchee Strand-Jones Grade core (W-17394) was assigned U.S. Geological Survey Paleobotanical Number R5222.

11.4-12.0 ft depth (R5222 M) did not yield dinocysts.

23.8-24.4 ft (R5222 L) did not yield dinocysts.

56.5-57.0 ft depth (R5222 K) contains a moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell. Preservation is fair. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Batiacasphaera hirsuta Stover ?
Dapsilidinium pseudocolligerum (Stover) Bujak et al.
Invertocysta Edwards sp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Melitasphaeridium Harland & Hill sp.
Multispinula quanta Bradford
Operculodinium Wall spp.
Reticulatasphaera actinocoronata (Benedek) Bujak & Matsuoka
Spiniferites Mantell spp.
Spiniferites mirabilis (Rossignol) Sarjeant
Tectatodinium pellitum Wall
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late late Miocene or Pliocene, based on stratigraphic position and the overlap of A. andalousiensis (earliest occurrence near the middle/late Miocene boundary) and D. pseudocolligerum (latest occurrence in the Pliocene).

71.2-71.9 ft depth (R5222 J) did not yield dinocysts.

141.4-142.4 ft depth (R5222 H) contains a well preserved, moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Erymnodinium delectabile (de Verteuil & Norris) Lentin et al.
Habibacysta tectata Head et al.
Lejeunecysta Artzner & Dörhöfer spp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Melitasphaeridium choanophorum (Deflandre & Cookson) Harland & Hill
Multispinula quanta Bradford
Operculodinium Wall spp.
Quadrina ? condita de Verteuil & Norris
Selenopemphix armageddonensis de Verteuil & Norris
Selenopemphix brevispinosa Head et al. subsp. conspicua de Verteuil & Norris
Spiniferites Mantell spp.
Trinovantedinium ? xylochoporum de Verteuil & Norris
Trinovantedinium papulum de Verteuil & Norris
Tuberculodinium vancampoae (Rossignol) Wall

Age: late late Miocene. S. armageddonensis and E. delectabile overlap in zone DN 10 of de Verteuil and Norris (1996) in the late late Miocene.

185.0-185.5 ft depth (R5222 C) contains a well preserved, moderately diverse dinocyst assemblage in which no particular species is dominant. Dinocysts are:

Erymnodinium delectabile (de Verteuil & Norris) Lentin et al.
Habibacysta tectata Head et al. ?
Invertocysta lacrymosa Edwards
Lejeunecysta Artzner & Dörhöfer spp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Multispinula quanta Bradford
Nematosphaeropsis rigida Wrenn
Operculodinium Wall spp.
Selenopemphix Benedek sp.
Selenopemphix brevispinosa Head et al. subsp. brevispinosa
Spiniferites Mantell spp.
Tectatodinium pellitum Wall
Trinovantedinium ? xylochoporum de Verteuil & Norris
Trinovantedinium Reid sp.
Tuberculodinium vancampoae (Rossignol) Wall

Age: late Miocene, based on the overlap of ranges of E. delectabile (late middle and late Miocene), I. lacrymosa (late Miocene and Pliocene), and S. brevispinosa brevispinosa (latest occurrence in the late Miocene).

Picayune Strand State Forest core

The Picayune Strand State Forest core (W-17450) was assigned U.S. Geological Survey Paleobotanical Number R5223.

12.4-12.8 ft depth (R5223 J) contains a sparse, monospecific assemblage of Polysphaeridium zoharyi (Rossignol) Bujak et al.

Age: Cenozoic.

34.1-34.6 ft depth (R5223 I) contains a low diversity dinocyst assemblage dominated by species of Spiniferites Mantell. Preservation is fair to poor. Dinocysts are:

Invertocysta Edwards sp.
Invertocysta lacrymosa Edwards
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Operculodinium Wall spp.
Spiniferites Mantell spp.
Spiniferites mirabilis (Rossignol) Sarjeant
Tectatodinium pellitum Wall
miscellaneous chorate fragment, presumed reworked.

Age: late Miocene or Pliocene based on the presence of I. lacrymosa.

54.3-54.7 ft depth (R5222 G) did not yield dinocysts.

79.0 -79.4 ft depth (R5222 H) did not yield dinocysts.

90.5-91.0 ft depth (R5223 F) contains a sparse, moderately low diversity dinocyst assemblage dominated by species of Spiniferites Mantell. Preservation is fair. Dinocysts are:

Achomosphaera Evitt sp.
Batiacasphaera hirsuta Stover ?
Dapsilidinium pseudocolligerum (Stover) Bujak et al.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Selenopemphix Benedek sp.
Spiniferites Mantell spp.
Tectatodinium pellitum Wall
Tuberculodinium vancampoae (Rossignol) Wall

Age: late middle or late Miocene or Pliocene, based on stratigraphic position and the presence of D. pseudocolligerum (latest occurrence in the Pliocene).

152.8-153.5 ft depth (R5223 D) contains a moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell and Habibacysta tectata Head et al. Preservation is fair. Dinocysts are:

Forma D of Wrenn and Kokinos (1986)
Habibacysta tectata Head et al.
Hystrichokolpoma rigaudiae Deflandre & Cookson
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Operculodinium Wall spp.
Spiniferites Mantell spp.
Sumatradinium Lentin & Williams sp.
Tectatodinium pellitum Wall
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late middle Miocene, late Miocene, or early Pliocene, based on stratigraphic position.

187.9-188.5 ft depth (R5223 A) contains a moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell. Preservation is fair. Dinocysts are:

Erymnodinium delectabile (de Verteuil & Norris) Lentin et al.
Hystrichokolpoma rigaudiae Deflandre & Cookson
Hystrichosphaeropsis obscura Habib
Impagidinium sphaericum (Wall) Lentin & Williams
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Multispinula quanta Bradford
Nematosphaeropsis Deflandre & Cookson sp.
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Spiniferites Mantell spp.
Tuberculodinium vancampoae (Rossignol) Wall

Age: late middle Miocene or late Miocene, based on the ranges of E. delectabile (late middle and late Miocene) and H. obscura (latest occurrence in the late Miocene).

Southern States Utilities core

The Southern States Utilities core (W-17454) was assigned U.S. Geological Survey Paleobotanical Number R5221.

8.5-9.0 ft depth (R5221 J) contains a monospecific assemblage of Polysphaeridium zoharyi (Rossignol) Bujak et al.

Age: Cenozoic.

36.4-37.0 ft depth (R5221 I) did not yield dinocysts.

54.5-55.0 ft depth (R5221 H) did not yield dinocysts.

97.6-98.3 ft depth (R5221 G) contains a well preserved, moderately diverse dinocyst assemblage dominated by species of Spiniferites Mantell and Operculodinium Wall. Dinocysts are:

Achomosphaera andalousiensis Jan du Chêne
Batiacasphaera hirsuta Stover ?
Erymnodinium delectabile (de Verteuil & Norris) Lentin et al.
Forma D of Wrenn and Kokinos (1986)
Lejeunecysta Artzner & Dörhöfer spp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Melitasphaeridium choanophorum (Deflandre & Cookson) Harland & Hill
Multispinula quanta Bradford
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Reticulatasphaera actinocoronata (Benedek) Bujak & Matsuoka
Spiniferites Mantell spp.
Spiniferites mirabilis (Rossignol) Sarjeant
Sumatradinium druggii Lentin et al. ?
Tectatodinium pellitum Wall
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late middle Miocene or late Miocene, based on the ranges of E. delectabile (late middle and late Miocene) and A. andalousiensis (earliest occurrence near the middle/late Miocene boundary).

140.5-141.0 ft depth (R5221 E) did not yield dinocysts.

204.3-204.8 ft depth (R5221 A) contains a well preserved, moderately diverse dinocyst assemblage in which no particular species is dominant. Dinocysts are:

Erymnodinium delectabile (de Verteuil & Norris) Lentin et al.
Hystrichokolpoma rigaudiae Deflandre & Cookson
Hystrichosphaeropsis obscura Habib
Lejeunecysta Artzner & Dörhöfer spp.
Lingulodinium machaerophorum (Deflandre & Cookson) Wall
Multispinula quanta Bradford
Nematosphaeropsis Deflandre & Cookson sp.
Operculodinium Wall spp.
Polysphaeridium zoharyi (Rossignol) Bujak et al.
Selenopemphix brevispinosa Head et al. subsp. brevispinosa
Spiniferites Mantell spp.
Sumatradinium hispidum (Drugg) Lentin & Williams
Tectatodinium pellitum Wall
Trinovantedinium harpagonium de Verteuil & Norris
Trinovantedinium Reid sp.
Tuberculodinium vancampoae (Rossignol) Wall
miscellaneous Congruentidiaceae

Age: late middle Miocene or late Miocene, based on the ranges of E. delectabile (late middle and late Miocene) and H. obscura (latest occurrence in the late Miocene).