Rosarito Quarry (Cretaceous of Venezuela)

Where: Zulia, Venezuela (10.5° N, 72.4° W: paleocoordinates 8.0° N, 41.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Machiques Member (Apón Formation), Aptian (125.0 - 113.0 Ma)

• "The Apón Formation consists principally of shallow-sea platform carbonates generally divided in northwestern Venezuela into three members, with the Machiques Member denoting the formation's middle bed. The Machiques Member is considered Aptian in age based on its ammonite fauna. Impure carbonate shale beds containing hard limestone lenses generally become more frequent in the Machiques Member. While the best-preserved fossils (both vertebrate and invertebrate) are found in these limestone lenses, the pterosaur bone was collected from the Machique marl beds about 2m stratigraphically above the most notable of these shale beds in the quarry (while actually below this bed in the quarry because of the overturned section)."

• member-level stratigraphic resolution

Environment/lithology: shallow subtidal; marl

• "Shallow-sea platform...the palaeo-shoreline was very close"

Size class: macrofossils

Collection methods: surface (in situ), mechanical,

• MBLUZ: Paleovertebrate Sector, Department of Geology and Paleontology, Museu Nacional/UFRJ, Rio de Janeiro

Primary reference: A. W. A. Kellner and J. M. Moody. 2003. Pterosaur (Pteranodontoidea, Pterodactyloidea) scapulocoracoid from the Early Cretaceous of Venezuela. In E. Buffetaut, J.-M. Mazin (eds.), Evolution and Palaeobiology of Pterosaurs. Geological Society, London, Special Publications 217:73-77 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 89071: authorized by Richard Butler, entered by Richard Butler on 04.05.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia indet. Linnaeus 1758 clam
Gastropoda indet. Cuvier 1797 snail
 Belemnoidea -
Belemnoidea indet. Hyatt 1884 belemnite
 Coleoidea -
Teuthida indet. Naef 1916 squid
 Teleostei - Aspidorhynchidae
 Teleostei -
 Teleostei - Araripichthyidae
Araripichthys sp. Silva Santos 1985
 Ichthyodectiformes - Ichthyodectidae
 Pycnodontiformes - Pycnodontidae
Pycnodontidae indet. Agassiz 1835
 Testudines -
Testudines indet. Batsch 1788 turtle
"Sea turtle"
 Pterosauria - Anhangueridae
Anhangueridae indet. Campos and Kellner 1985 pterosaur
MBLUZ P-911, scpaulocoracoid
 Ichthyosauria - Ophthalmosauridae
Platypterygius sp. von Huene 1922 ichthyosaur
Echinoidea indet. Leske 1778 sea urchin