San Nicolas Basin., IGM Loc. Gro. 4 (Pliocene of Mexico)

Where: Guerrero, Mexico (17.9° N, 102.2° W: paleocoordinates 17.9° N, 102.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Pliocene (5.3 - 2.6 Ma)

Environment/lithology: paralic; sandstone and black shale

• lithology description incomplete because fossils derive from well cuttings

Size class: macrofossils

Collection methods: specimens are from cuttings of a well drilled 10 years prior

Primary reference: J. W. Durham, S.P. Applegate, and L. Espinosa-Arrubarrena. 1981. Onshore marine Cenozoic along southwest Pacific coast of Mexico. Geological Society America Bulletin 92:384-394 [S. Peters/S. Peters]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 66169: authorized by Shanan Peters, entered by Shanan Peters on 03.10.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Foraminifera
 Globigerinoidea - Globigerinidae
"Globoquadrina ? venezuelana" = Dentoglobigerina venezuelana
"Globoquadrina ? venezuelana" = Dentoglobigerina venezuelana Hedberg 1937
Gastropoda
 Cerithioidea - Cerithiidae
 Cerithioidea - Potamididae
Cerithidea sp. Swainson 1840 horn snail
Bivalvia
 Cardiida - Corbiculidae
 Cardiida - Veneridae
"Chione cf. subrugosa" = Iliochione subrugosa, Chione sp.
"Chione cf. subrugosa" = Iliochione subrugosa Wood 1828 venus clam
Chione sp. von Mühlfield 1811 venus clam