MMH locality Su 90 (Cretaceous of Venezuela)

Also known as Bahía de Santa Fé

Where: Venezuela (9.0° N, 63.5° W: paleocoordinates 8.6° N, 31.5° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Taguarumo Member (Barranquín Formation), Barremian (129.4 - 125.0 Ma)

• "[The material] was collected from several different limestone horizons of the Barranquin Fm. in the upper two-thirds of the section exposed at Santa Fe. There are almost 1000 meters of section between oldest and the youngest fossiliferous horizons. However, no zonation of species was noticed and the same forms that are present in the youngest horizon are found in the oldest fossil bed."

•JA: closest correlation is with "Neocomian or possibly Barremian" faunas of Europe, but because there "seems to be no hiatus between the Barranquín and the overlying Lower Aptian El Cantil formation, the Barranquín formation probably also represents the Barremian"

•JA: this collection is from the base of the member

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

• "Under the special conditions prevalent along the sea coast within two or three meters of the strand line, the soft calcareous fossils are weathered out of the hard limestone matrix and are available in a remarkable state of preservation."

Collected by E. von der Osten

Collection methods: surface (in situ), mechanical,

• Ministerio de Minas e Hidrocarburos collection

Primary reference: E. von der Osten. 1957. A fauna from the lower Cretaceous Barranquin Formation of Venezuela. Journal of Paleontology 31(3):571-590 [J. Alroy/M. Sommers/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 1858: authorized by John Alroy, entered by Mike Sommers on 10.06.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• could conceivably include von der Osten's record of Pseudamaura cf. bulbiformis from the "Santa Fé region"
Polychaeta
 Sabellida - Serpulidae
Bivalvia
 Ostreida - Gryphaeidae
Exogyra texana oyster
subspecies weatherfordensis
 Lucinida - Lucinidae
Sphaera corrugata Sowerby 1822 clam
Gastropoda
 Stromboidea - Aporrhaidae
Anchura catedralis n. sp. snail
 Vanikoroidea - Eulimidae
 Naticoidea - Naticidae
Lunatia cragini moon snail
 Sorbeoconcha - Cerithiidae
Cerithium krauskopfi n. sp. cerith snail
 Heterobranchia - Nerineidae
"Nerinaea pseudoconvexa" = Nerinea, "Nerinaea trishae n. sp." = Nerinea
"Nerinaea pseudoconvexa" = Nerinea snail
"Nerinaea trishae n. sp." = Nerinea snail
 Architectonicoidea - Architectonicidae
 Amberleyoidea - Nododelphinulidae
 Trochoidea - Trochidae
Calliostoma sp. Swainson 1840 top snail
said to be new