Where: Texas (29.2° N, 100.3° W: paleocoordinates 35.0° N, 73.7° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Bostrychoceras polyplocum ammonoid zone, Anacacho Limestone Formation, Middle Campanian (83.5 - 70.6 Ma)
• AGE: Late Campanian, on the basis of ammonoid biostratigraphy; Bostrychoceras polyplocum zone; was originally entered as Middle Campanian. Comment by J. Sessa: Swezey and Sullivan (2004) correlate this bed to the Baculites maclearni zone, which is middle Campanian in Gradstein et al., 2004. Also, Bostrychoceras polyplocum zone spans almost the entire middle Campanian and part of the upper Campanian, thus I have changed the interval back to middle Campanian.
Environment/lithology: marine; carbonate
Size class: mesofossils
Collection methods: this list is a compilation of field and museum collections as well as the literature
Primary reference: W. P. Elder. 1996. Bivalves and Gastropods from the Middle Campanian Anacacho Limestone, south central Texas. Journal of Paleontology 70(2):247-271 [M. Patzkowsky/K. Layou/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 3632: authorized by Mark Patzkowsky, entered by Karen Layou on 05.08.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Pachydiscus travisi ammonite | |
Eubostrychoceras reevesi ammonite
Bostrychoceras polyplocum Roemer 1841 ammonite | |
Lewyites clinensis ammonite | |
Baculites taylorensis Adkins 1929 ammonite | |
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Scaphopoda | |
Scaphopoda indet. Bronn 1862 tusk shell | |
Gastropoda | |
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Pyropsis aff. proxima Wade 1926 snail "n. sp. aff. proxima" - originally entered as "Pyropsis n. sp. aff. proxima"
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Capulus aff. cuthandensis snail "n. sp. aff. cuthandensis" - originally entered as "Capulus n. sp. aff. cuthandensis"
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Bivalvia | |
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Pycnodonte mutabilis oyster
Exogyra spinifera oyster | |
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Limea reticulata file clam
Lima sp. Bruguière 1797 file clam | |
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Camptonectes burlingtonensis, Camptonectes cf. bellisculptus, ? Lyriochlamys sp., ? Spondylus siccus n. sp., Spondylus sp.
Camptonectes burlingtonensis scallop
Spondylus sp. Linnaeus 1758 scallop | |
Neithea quinquecostata Sowerby 1814 scallop | |
Inoceramus balticus Bohm 1907 clam | |
Cucullaea sp. Lamarck 1801 clam | |
? Barbatia sp., "Arca cf. carolinensis" = Barbatia carolinensis
"Arca cf. carolinensis" = Barbatia carolinensis Conrad 1849 clam originally entered as "Arca cf. carolinensis"
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Pterotrigonia sp. van Hoepen 1929 clam | |
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Liopistha alternata clam | |
Pholadomya ingens clam | |
Durania sp. Douvillé 1908 rudist | |
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Requieniidae indet. Douvillé 1914 rudist | |
Granocardium dumosum Conrad 1870 cockle | |
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Rhynchonellata | |
"Terebratulina cf. filosa" = Cricosia filosa
"Terebratulina cf. filosa" = Cricosia filosa Conrad 1866 originally entered as "Terebratulina cf. filosa"
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Polychaeta | |
Echinoidea | |
"Phyllobrissus cubensis" = Petalobrissus cubensis
"Phyllobrissus cubensis" = Petalobrissus cubensis Weisbord 1934 sand dollar | |
Proraster dalli Clark 1891 heart urchin | |
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Salenia hondoensis Cooke 1953 sea urchin |