Mangueira 1, Riachuelo Formation, Sergipe basin (Cretaceous of Brazil)

Where: Brazil (10.7° S, 37.2° W: paleocoordinates 11.3° S, 4.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Angico Member (Riachuelo Formation), Aptian (125.0 - 113.0 Ma)

• associated to the Aptian ammonite Cheloniceras sp.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified, massive, argillaceous siltstone

• Based on associated fauna and sedimentological data, Hessel (2004) presented information indicating a marine, high-energy environment with well-oxygenated water conditions.

Size class: macrofossils

Preservation: mold/impression

Collection methods: mechanical,

• Associated fauna is composed of other bivalves, serpulids, ammonites, gastropods and echinoids.

Primary reference: M. H. Hessel. 2004. Gervillia (Gervillia) solenoidea Defrance, 1820 (Bivalvia Bakevelliidae) do Neo-Aptiano de Sergipe, Brasil. Revista Brasileira de Paleontologia 7(1):67-76 [M. Aberhan/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 115143: authorized by Martin Aberhan, entered by Sabine Nürnberg on 29.08.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Douvilleiceratidae
Cheloniceras sp. Hyatt 1903 ammonite
Bivalvia
 Pectinida - Neitheoidae
Neithea sp. Drouet 1824 scallop
 Ostreida - Bakevelliidae
Gervillia (Gervillia) sergipensis Mello et al. 2007 oyster
Gervillia (Gervillia) solenoidea Defrance 1820 oyster