Sierra de Buñuelas, near Gomez Farias (Jurassic of Mexico)

Where: Coahuila, Mexico (25.0° N, 101.0° W: paleocoordinates 20.7° N, 52.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: La Caja Formation, Early/Lower Tithonian (150.8 - 145.0 Ma)

• "Early Tithonian (Upper Jurassic) section of the La Caja Fm."

• bed-level stratigraphic resolution

Environment/lithology: offshore; phosphatic, silty shale

Size class: macrofossils

Primary reference: M.-C. Buchy, P. Vignaud, E. Frey, W. Stinnesbeck, and A. H. G. Gonzalez. 2006. A new thalattosuchian crocodyliform from the Tithonian (Upper Jurassic) of northeastern Mexico. Comptes Rendus Palevol 5:785-794 [M. Carrano/H. Street/H. Street]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 104859: authorized by Matthew Carrano, entered by Hallie Street on 11.02.2011, edited by Jonathan Tennant

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Teleostei - Aspidorhynchidae
Aspidorhynchidae indet. Bleeker 1859
Mandible (CEP1864)
 Pachycormiformes - Pachycormidae
Pachycormidae indet. Woodward 1895
Mandible and postcranium (CEP1840)
Reptilia
 Loricata -
Thalattosuchia indet. marine crocodile
Partial rostrum (CEP1841); numerous isolated vertebrae and postcranial elements (e.g. CEP1810, 1816, 1855)
 Loricata - Metriorhynchidae
cf. Metriorhynchus sp., "Geosaurus saltillense n. sp." = Cricosaurus saltillense
cf. Metriorhynchus sp. von Meyer 1830 marine crocodile
Partial to subcomplete skulls and postcranium (CEP1831, 1856, 1857); isolated teeth
"Geosaurus saltillense n. sp." = Cricosaurus saltillense Buchy et al. 2006 marine crocodile
MUDE CEP1823, holotype poorly preserved skull, lacking snout, and postcranium
 Sauropterygia - Elasmosauridae
Elasmosauridae indet. Cope 1869 elasmosaur
Numerous isolated vertebrae
 Sauropterygia - Pliosauridae
Pliosauridae indet. Seeley 1874 plesiosaur
Incomplete skeleton (CEP1843) and isolated cervical centrum (CEP1850)
 Ichthyosauria - Ophthalmosauridae
Ophthalmosauridae indet. Appleby 1956 ichthyosaur
Numerous isolated vertebrae, including indicating very large individuals (e.g. CEP1811, 1813, 1818, 1819, 1822, 1826); partial postcrania (e.g. CEP1836)
Ophthalmosaurus icenicus Seeley 1874 ichthyosaur
Skull and mandible and associated partial postcranium (CEP1876