Tiringueo, T 9, San Lucas Formation, Michoacan (Cretaceous of Mexico)

Where: Mexico (18.5° N, 100.8° W: paleocoordinates 16.8° N, 56.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Terrero Prieto Member (San Lucas Formation), Late/Upper Barremian (130.0 - 125.5 Ma)

• early Late Barremian; Gerhardtia sartousiana zone; Tiringueo Section is a 41.8 m thick unit

• bed-level stratigraphic resolution

Environment/lithology: submarine fan; lithified limestone and lithified sandstone

• alternation of dark gray marly limestones, yellowish volcanic sandstones and partially covered gray to yellowish marls. Flysch deposit

Size class: macrofossils

Collection methods: quarrying,

Primary reference: R. Barragan, C. Gonzalez-Arreola, and A. B. Villasenor. 2004. Palaeoecological significance of Barremian ammonite assemblages and facies variations from Southwest Mexico. Lethaia 37:223-234 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 60789: authorized by Wolfgang Kiessling, entered by Uta Merkel on 23.05.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Pulchelliidae
Pulchellia sp., "Gerhardtia sp." = Pulchellia (Heinzia)
"Gerhardtia sp." = Pulchellia (Heinzia) ammonite
 Ammonoidea - Hamulinidae
Anahamulina sp.
Anahamulina sp. Hyatt 1900 ammonite