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 | |
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Reptilia | |
Ophthalmosauridae indet. Andrews 1910 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)
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Pliosauridae indet. Seeley 1874 plesiosaur Incomplete skeleton (CEP1843) and isolated cervical centrum (CEP1850)
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Thalattosuchia indet. Fraas 1901 marine crocodile Partial rostrum (CEP1841); numerous isolated vertebrae and postcranial elements (e.g. CEP1810, 1816, 1855)
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cf. Metriorhynchus sp., "Geosaurus saltillense n. sp." = Cricosaurus saltillensis
cf. Metriorhynchus sp. von Meyer 1830 marine crocodile Partial to subcomplete skulls and postcranium (CEP1831, 1856, 1857); isolated teeth
"Geosaurus saltillense n. sp." = Cricosaurus saltillensis Buchy et al. 2006 marine crocodile MUDE CEP1823, holotype poorly preserved skull, lacking snout, and postcranium
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