BV-Eastern Coahuila(MEX) (Cretaceous of Mexico)

Where: Coahuila, Mexico (27.0° N, 102.0° W: paleocoordinates 24.9° N, 55.2° W)

• outcrop-level geographic resolution

When: Barril Viejo Shale Member, Hauterivian (132.9 - 129.4 Ma)

• bed-level stratigraphic resolution

Environment/lithology: gray, calcareous shale

Primary reference: R. W. Imlay. 1940. Neocomian Faunas of Northern Mexico. Geological Society America Bulletin 51(1):117-190 [M. Patzkowsky/K. Layou/A. Clement]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 2145: authorized by Mark Patzkowsky, entered by Karen Layou on 23.06.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Terebratulida - Terebratulidae
Bivalvia
 Ostreida - Gryphaeidae
aff. Exogyra latissima oyster
"latissima var. aquila" - originally entered as "Exogyra aff. latissima var. aquila"
Exogyra reedi Imlay 1937 oyster
 Ostreida - Bakevelliidae
Gervillia alatior Imlay 1940 oyster
 Ostreida - Pinnidae
Pinna sp. Linnaeus 1758 oyster
 Pectinida - Limidae
Lima kanei Imlay 1940 file clam
 Pectinida - Plicatulidae
Plicatula sp. n. sp. Lamarck 1801 scallop
originally entered as "Plicatula n. sp."
Plicatula umbonata Imlay 1940 scallop
 Pectinida - Pectinoidae
Pecten sp. Müller 1776 scallop
originally entered as "Pecten spp."
Prohinnites ordonesi Imlay 1940 scallop
 Pectinida - Neitheoidae
Neithea biangulata Imlay 1940 scallop
 Pectinida - Entoliidae
Syncyclonema sp. Meek 1864 scallop
 Arcida - Parallelodontidae
Grammatodon sp. Meek and Hayden 1860 clam
 Arcida - Cucullaeidae
Cucullaea gabrielis clam
"gabrielis var. fraterna" - originally entered as "Cucullaea gabrielis var. fraterna"
 Carditida - Astartidae
Astarte sp. Sowerby 1816 clam
 Hiatellida - Hiatellidae
cf. Panopea gurgitis clam
originally entered as "Panope cf. gurgitis"
 Pholadomyida - Pholadomyidae
cf. Pholadomya sanctae-crucis Sowerby 1823 clam
originally entered as "Pholadomya cf. sanctae-crucis"
cf. Pholadomya gigantea Sowerby 1836 clam
originally entered as "Pholadomya cf. gigantea"
 Cardiida - Arcticidae
"cf. Cyprina bernensis" = Arctica, "Cyprina sp." = Arctica
"cf. Cyprina bernensis" = Arctica clam
originally entered as "Cyprina cf. bernensis"
"Cyprina sp." = Arctica Schumacher 1817 clam
 Lucinida - Lucinidae
Lucina kellumi Imlay 1940 clam
Sphaera americanus Imlay 1940 clam
Gastropoda
 Heterostropha - Nerineidae
Nerinea sp. Deshayes 1827 snail
 Sorbeoconcha - Tylostomatidae
cf. Tylostoma laharpi Pictet and Campiche 1862 snail
originally entered as "Tylostoma cf. laharpi"
 Sorbeoconcha - Aporrhaidae
Harpagodes mexicanus Imlay 1940 snail
Harpagodes americanus Imlay 1940 snail
 Sorbeoconcha - Vermetidae
Vermetus cornejoi Castillo and Aguilera 1895 worm shell
"cornejoi var. varians" - originally entered as "Vermetus cornejoi var. varians"
 Sorbeoconcha - Naticidae
cf. Natica hugardiana d'Orbigny 1842 moon snail
originally entered as "Natica cf. hugardiana"
cf. Natica neptuni d'Orbigny 1850 moon snail
originally entered as "Natica cf. neptuni"
 Trochoidea - Trochidae
Trochus sp. n. sp.
Trochus sp. n. sp. Linnaeus 1758 top snail
originally entered as "Trochus n. sp."
 Trochoidea - Turbinidae
? Turbo gigas Imlay 1940 snail
originally entered as "Turbo? gigas"
Cephalopoda
 Ammonitida - Polyptychitidae
Dichotomites multicostatus Imlay 1940 ammonite
 Ammonitida - Neocomitidae
Leopoldia crassicostata Inlay 1938 ammonite
Leopoldia truncata Imlay 1940 ammonite
Acanthodiscus magnificus Imlay 1938 ammonite
cf. Acanthodiscus radiatus Bruguiére 1792 ammonite
originally entered as "Acanthodiscus cf. radiatus"
"Leopoldia victoriensis" = Parrasites victoriensis Imlay 1938 ammonite