Loc. 907, 8 km west of La Mira (Miocene of Mexico)

Where: Michoacan, Mexico (18.0° N, 102.4° W: paleocoordinates 18.6° N, 99.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ferrotepec Formation, Middle Miocene (16.0 - 11.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified sandstone

• Stratigraphic section measured by Durham et al. (1981) at nearby "Mch 17" is dominantly siltstone, but contains interbedded shell coquinas. There is little other evidence, but this seems most consistent with an offshore transition environment where there was intermittent storms to produce the shell beds.

Size class: macrofossils

Preservation: original aragonite, original calcite

Primary reference: M.C. Perrilliat. 1987. Gasteropodos y un cefalopodo de la formacion Ferrotepec (Mioceno Medio) de Michoacan. Paleontologia Mexicana 52:1-58 [S. Peters/S. Peters/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 66161: authorized by Shanan Peters, entered by Shanan Peters on 03.10.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Nautilida - Aturiidae
Aturia angustata
Aturia angustata Conrad 1849 nautiloid