Where: Alabama (33.0° N, 87.1° W: paleocoordinates 29.5° S, 72.7° W)
• coordinate estimated from map
When: Pygodus anserinus conodont zone, Pratt Ferry Formation, Chazyan (470.0 - 457.3 Ma)
• Shaw (2014): "Located between the Lenoir and Athens formations, the upper part of these beds contains the stratigraphically important Pygodus serrus–Pygodus anserinus conodont zonal boundary (late Darriwilian) (Sweet and Bergström, 1962; Bergström, 1990). Finney (1984) and Bergström (1990) showed that the base of the Nemagraptus gracilis Zone (early Sandbian) lies in the Athens Formation just above the Pratt Ferry beds."
• group of beds-level stratigraphic resolution
Environment/lithology: open shallow subtidal; limestone
Size classes: macrofossils, mesofossils
Reposited in the USNM
Primary reference: G. A. Cooper. 1956. Chazyan and related brachiopods. Smithsonian Miscellaneous Collections 127:1-1245 [P. Wagner/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 162364: authorized by Pete Wagner, entered by Pete Wagner on 23.09.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
Diorthelasma parvum Cooper 1956 | |
| |
Nothorthis tarda Cooper 1956 | |
"Orthambonites tenuicostatus" = Sivorthis tenuicostatus, Taphrorthis peculiaris
"Orthambonites tenuicostatus" = Sivorthis tenuicostatus Cooper 1956
Taphrorthis peculiaris Cooper 1956 | |
Glyptorthis glypta Cooper 1956 | |
Parastrophina bilobata Cooper 1956 | |
Perimecocoelia semicostata Cooper 1956 | |
"Parallelelasma pentagonum" = Metacamarella
"Parallelelasma pentagonum" = Metacamarella | |
Strophomenata | |
Kullervo sulcata n. sp.
Kullervo sulcata n. sp. Cooper 1956 | |
Eremotoechia silicica Cooper 1956 | |
Xenambonites undosus n. gen. n. sp. Cooper 1956
Ptychoglyptus virginiensis Willard 1928
Anisopleurella tricostellata Cooper 1956 | |
Christiania subquadrata Hall 1883 | |
Bimuria siphonata, Craspedelia marginata n. gen. n. sp.
Craspedelia marginata n. gen. n. sp. Cooper 1956 | |
"Leptellina pulchra" = Anoptambonites pulchra
"Leptellina pulchra" = Anoptambonites pulchra Cooper 1956 | |
Titanambonites amplus Raymond 1928
Glyptambonites glyptus Cooper 1956 | |
Isophragma "sp. 1" Cooper 1956 | |
Bellimurina sulcata Cooper 1956 | |
Triplesia carinata Cooper 1956 | |
Lingulata | |
"Torynelasma minor" = Biernatia minor
"Torynelasma minor" = Biernatia minor Cooper 1956 | |
"Conotreta gigantea" = Talasotreta gigantea, "Conotreta depressa n. sp." = Cyrtonotreta depressa, Conotreta concentrica, Conotreta multisinuata, Conotreta apicalis, Spondylotreta concentrica
"Conotreta gigantea" = Talasotreta gigantea Cooper 1956
"Conotreta depressa n. sp." = Cyrtonotreta depressa Cooper 1956
Conotreta apicalis Cooper 1956
Spondylotreta concentrica Cooper 1956 | |
Scaphelasma septatum Cooper 1956 | |
Ephippelasma minutum Cooper 1956 | |
"Pachyglossa pachydermata" = Pachyglossella, "Pachyglossa dorsiconvexa n. gen. n. sp." = Pachyglossella dorsiconvexa, Glossella papulosa, Obolus "sp. 3", Obolus "sp. 4", Spinilingula intralamellata, Westonia superba, Elliptoglossa ovalis, Lingulella alabamensis, Lingulella lirata, Lingulella pachyderma, Lingulella "sp. 8"
"Pachyglossa pachydermata" = Pachyglossella
"Pachyglossa dorsiconvexa n. gen. n. sp." = Pachyglossella dorsiconvexa Cooper 1956
Obolus "sp. 3" Eichwald 1829
Obolus "sp. 4" Eichwald 1829
Spinilingula intralamellata Cooper 1956
Westonia superba Cooper 1956
Elliptoglossa ovalis Bassler 1919
Lingulella "sp. 8" Salter 1866 | |
Acanthambonia minutissima Cooper 1956
Schizambon "sp. 2" Walcott 1884 | |
Paterinata | |
Dictyonites perforata Cooper 1956 |