El Papalote Diapir (Jurassic of Mexico)

Also known as La Popa Basin

Where: Nuevo León, Mexico (26.1° N, 100.7° W: paleocoordinates 20.8° N, 50.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Early/Lower Kimmeridgian (155.7 - 150.8 Ma)

• "early Kimmeridgian"

Environment/lithology: lagoonal or restricted shallow subtidal; lithified, shelly/skeletal lime mudstone

• "The oyster banks at El Papalote are interpreted to have developed under shallow marine conditions in a sabkha environment, with tidal influence that provided periodic input of organic matter and normal marine water"
• the "fossiliferous bed... at El Papalote is 30 cm thick, forms a prominent ridge that is nearly continuous around the perimeter of the block, and contains numerous fossils in gray micrite" and is found within "large carbonate blocks having elliptical shapes that attain dimensions of 100 by 200 m...

Size class: macrofossils

Collection methods: IGM collection

Primary reference: F. J. Vega and T. F. Lawton. 2011. Upper Jurassic (Lower Kimmeridgian-Olvido) carbonate strata from the La Popa Basin diapirs, NE Mexico. Boletín de la Sociedad Geológica Mexicana 63(2):313-321 [J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 114687: authorized by John Alroy, entered by John Alroy on 20.08.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Nautilida - Nautilidae
? Cymatoceras sp.
? Cymatoceras sp. Hyatt 1884 nautiloid
Bivalvia
 Carditida - Astartidae
Astarte gracilicostula
 Pandorida - Laternulidae
Cercomya durangensis
 Cardiida - Corbiculidae
? Eocallista sp.
? Eocallista sp. Douvillé 1921 clam
 Trigoniida - Myophorelloidae
Myophorella sp.
Myophorella sp. Bayle 1878 clam
 Ostreida - Gryphaeidae
Nanogyra virgula
Nanogyra virgula Deshayes 1831 oyster
 Ostreida - Ostreidae
Rastellum sp.
Rastellum sp. Faujas-St.-Fond 1799 oyster
 Arcida - Parallelodontidae
Grammatodon sp.
Grammatodon sp. Meek and Hayden 1860 clam