CAS Loc. 267 (horizon L), Tuberá Mtn [Los Perdices Shale] (Miocene of Colombia)

Where: Colombia (11.0° N, 75.0° W: paleocoordinates 9.9° N, 71.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Los Perdices Shale Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From an undifferentiated part of the Los Perdices Gp (=Los Perdices Shale), which regionally underlies the Tuberá Gp (Early-Late Miocene) and overlies the "Poso Series" (Oligocene). AGE: Early Miocene on the basis of molluscan and foraminiferal biostratigraphy, although this is an antiquated assignment and subject to revision; also Lower Miocene in Gertman (1969). STRATIGRAPHIC POSITION: From horizon L.

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified shale

• SPECIFIC LITHOLOGY: Shale. LITHIFICATION: Poorly-lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by Andeson

Collection methods: surface (in situ),

• COLLECTOR: F. Andeson, c. 1920's. REPOSITORY: California Academy of Sciences (CAS).

Primary reference: F. M. Anderson. 1929. Marine Miocene and related deposits of North Colombia. Proceedings of the Academy of Sciences 18(4):73-213 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88330: authorized by Austin Hendy, entered by Austin Hendy on 07.04.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalves and gastropods. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications.
Gastropoda
 Neogastropoda - Mitridae
"Mitra mauryae n. sp." = Subcancilla mauryae
"Mitra mauryae n. sp." = Subcancilla mauryae Anderson 1929 mitre shell
 Neogastropoda - Drilliidae
"Drillia eupora" = Crassispira (Hindsiclava) eupora Dall 1915 snail
 Neogastropoda - Turridae
Scobinella morierei Cossmann 1913 turrid
 Naticoidea - Naticidae
Polinices prolactea n. sp. Anderson 1929 moon snail
 Tonnoidea - Cassidae
"Cassis (Phalium) dalli n. sp." = Echinophoria hadra
"Cassis (Phalium) dalli n. sp." = Echinophoria hadra Woodring and Olsson 1957 snail
Scaphopoda
 Dentaliida - Dentaliidae
"Dentalium granadanum n. sp." = Fissidentalium granadanum
"Dentalium granadanum n. sp." = Fissidentalium granadanum Anderson 1929 tusk shell