Pampa Tril (Berriasian levels) (Cretaceous of Argentina)

Where: Mendoza, Argentina (37.3° S, 69.8° W: paleocoordinates 36.0° S, 32.5° W)

• coordinate estimated from map

When: Vaca Muerta Formation, Berriasian (145.0 - 139.8 Ma)

Environment/lithology: offshore; black shale and marl

• "transgressive offshore marine sediments"
• "Transgressive deposits are mainly composed of thick cyclically stacked black shale and marl successions"

Size class: macrofossils

Primary reference: Z. Gasparini, D. Pol, and L. A. Spalletti. 2006. An unusual marine crocodyliform from the Jurassic-Cretaceous boundary of Patagonia. Science 311:70-73 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 72051: authorized by John Alroy, entered by John Alroy on 23.05.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• "pliosaurs, ichthyosaurs, [and] other metriorhynchids" but not invertebrates are also found in the formation
Reptilia
 Loricata - Metriorhynchidae
Dakosaurus andiniensis Vignaud and Gasparini 1996 marine crocodile
MOZ 6140P (anterior mandibular fragment)