Ammonite Unit Cenomanian 1, Sergipe Basin (Cretaceous of Brazil)

Where: Brazil (10.8° S, 37.1° W: paleocoordinates 17.4° S, 11.4° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Cotinguiba Formation, Early/Lower Cenomanian (99.6 - 93.5 Ma)

• some occurences could also be from the Riachuleo Fm, here from the Maruim and Aguilhada member, as they may locally extend into the Cenomanian

Environment/lithology: open shallow subtidal; limestone

• flaggy limestones (Sapucari facies (Bender, 1959) here replaced with the term Pindoba facies). Laminated thin bedded rocks, where the individual beds are generally separated by clayey or marly layers, and the rocks commonly appear as flaggy limestones.

Size class: macrofossils

Preservation: cast

Collection methods: A total of 604 localities in the Segripe Basin has been sampled, though the occurences can't be assigend to a specific locality

Primary reference: P. Bengtson. 1983. The Cenomanian-Coniacian of Sergipe Basin, Brazil. Fossil and Strata (12)1-78 [M. Aberhan/T. Schossleitner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 140837: authorized by Martin Aberhan, entered by Thomas Schossleitner on 18.03.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Poromyida - Poromyidae
Cephalopoda
 Ammonitida - Desmoceratidae
Desmoceras sp. Zittel 1884 ammonite
Puzosia sp. Bayle 1878 ammonite
 Ammonitida - Gaudryceratidae
Eogaudryceras sp. Spath 1927 ammonite
 Ammonitida - Tetragonitidae
Tetragonites sp. Kossmat 1895 ammonite
 Ammonitida - Forbesiceratidae
 Ammonitida - Lyelliceratidae
 Ammonitida - Acanthoceratidae
Sharpeiceras florencae Spath 1925 ammonite
Sharpeiceras laticlavium Sharpe 1855 ammonite
"Graysonites lozoi" = Graysonites wacoense Böse 1928 ammonite
 Ammonitida - Turrilitidae
Mariella sp. Nowak 1916 ammonite
Hypoturrilites gravesianus d'Orbigny 1842 ammonite
 Phylloceratida - Phylloceratidae
Phylloceras sp. Suess 1865 ammonite
Echinoidea
 Camarodonta - Glyphocyphidae
 Holectypoida - Holectypidae
 Holasteroida - Holasteridae
Cardiaster cubensis Jackson 1922 sea urchin
 Calycina -
Cottaldia benettiae Koenig 1825 sea urchin
 Salenioida - Saleniidae
Salenia rugosa sea urchin
Salenia petalifera sea urchin
Salenia scutigera Munster 1826 sea urchin