NMB Loc. 18218 [Los Perdices Shale] (Miocene of Colombia)

Where: Colombia (10.8° N, 75.0° W: paleocoordinates 9.7° N, 71.3° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

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

• STRATIGRAPHIC RELATIONS: From Los Perdices Shale, which regionally underlies the Tuberá Gp (Early-Late Miocene) and overlies the "Poso Series" (Oligocene). AGE: Early Miocene various publications (Anderson, 1929; Woodring, 1957-1982). STRATIGRAPHIC POSITION: From unknown position within formation.

• formation-level stratigraphic resolution

Environment/lithology: marine; shale

• No paleoenvironmental data provided.

Size classes: macrofossils, mesofossils

Collected by Companía Shell de Venezuela in 1940-1950; reposited in the NMB

Collection methods: surface (in situ),

• COLLECTORS: Companía Shell de Venezuela geologists, 1940's-1950's. REPOSITORY: Naturhistorisches Museum Basel (NMB).

Primary reference: J. Gibson-Smith and W. Gibson-Smith. 2012. Unpublished notes on Caribbean collection of Jack and Winifred Gibson-Smith, Naturhistorisches Museum Basel. [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 131222: authorized by Austin Hendy, entered by Austin Hendy on 21.07.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for mollusca. NOMENCLATURE: Unpublished data, but with species-resolution identifications, and modern nomenclature. COVERAGE: Limited to taxa described in text.
 Arcida - Arcidae
 Nuculida - Nuculidae
Acila (Acila) isthmica Brown and Pilsbry 1911 divaricate nutclam
 Neogastropoda - Buccinidae
Amarophos dentalis Olsson 1922 true whelk
 Neogastropoda - Mitridae
Mitra (Fusimitra) titan Gabb 1873 mitre shell
Subcancilla dariensis Brown and Pilsbry 1911 mitre shell
 Neogastropoda - Costellariidae
Conomitra lavelana Hodson 1931 ribbed mitre
 Neogastropoda - Drilliidae
 Neogastropoda - Turridae
Scobinella morierei Cossmann 1913 turrid
Polystira sp.2 Woodring 1928 turrid
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
Conus cf. consobrinus Sowerby 1850 cone shell
Conus molis Brown and Pilsbry 1911 cone shell
 Neogastropoda - Terebridae
Strioterebrum cf. wolfgangi Toula 1909 auger snail
 Naticoidea - Naticidae
Natica (Natica) bolus Brown and Pilsbry 1913 moon snail
"Natica (Naticarius) canrena" = Naticarius canrena Linnaeus 1758 moon snail
Sinum aff. gatunense Toula 1909 moon snail
Polinices brunneus moon snail
 Vermetoidea - Vermetidae
Petaloconchus sculpturatus Lea 1846 worm shell
 Tonnoidea - Cassidae
Sconsia grayi1, "Echinophoria andersoni" = Echinophoria hadra
Sconsia grayi1 Adams 1855 snail
"Echinophoria andersoni" = Echinophoria hadra Woodring and Olsson 1957 snail
 Dentaliida - Dentaliidae
Fissidentalium solidissimum Pilsbry and Brown 1917 tusk shell