Amatitla (Jurassic of Mexico)

Where: San Luis Potosí, Mexico (21.2° N, 98.9° W: paleocoordinates 15.7° N, 50.0° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Taman Formation, Kimmeridgian (157.3 - 152.1 Ma)

• "uppermost-Lower to lowermost-Upper Kimmeridgian"

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, silty limestone

• "from two silty limestone beds"; certainly lithified based on preservation of specimens

Size class: macrofossils

Collection methods: IGM (UNAM) collection

Primary reference: F. Olóriz and A. B. Villaseñor. 2006. Ceratosphinctes (Ammonitina, Kimmeridgian) in Mexico: from rare but typical inhabitant of west-Tethyan epioceanic and epicontinental waters to a geographically widespread ammonite genus. Geobios 39(2):255-266 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 114686: 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
 Ammonitida - Oppeliidae
Ochetoceras cf. neohispanicum, Taramelliceras sp.
Taramelliceras sp. Del Campana 1904 ammonite
two forms, one "of the compsum (Oppel) group"
 Ammonitida - Haploceratidae
Haploceratidae indet.
Haploceratidae indet. Zittel 1884 ammonite
"Glochiceras or Lingulaticeras sp."
 Ammonitida - Perisphinctidae
Idoceras sp., Ceratosphinctes rachistrophus
Idoceras sp. ammonite
"of the durangense-neohispanicum-bösei Burckhardt and balderum Burckhardt non Oppel – lorioli Burckhardt morphological plexus"
Ceratosphinctes rachistrophus Gemmellaro 1872 ammonite
"Ceratosphinctes rachistrophus amatitlaensis nov. subsp."
 Ammonitida - Aspidoceratidae
Orthaspidoceras sp., Sutneria sp.
Orthaspidoceras sp. ammonite
"of the uhlandi (Oppel) – ziegleri Checa groups"
Sutneria sp. Zittel 1884 ammonite
"of the cyclodorsata (Moesch) group"