Morne Diabo and Quinam Limestones (Oligocene of Trinidad and Tobago)

Where: Trinidad and Tobago (10.1° N, 61.5° W: paleocoordinates 9.0° N, 56.7° W)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Morne Diablo Limestone Formation, Late/Upper Oligocene (28.4 - 23.0 Ma)

• STRATIGRAPHIC RELATIONS: From the "Morne Diablo" and "Quinam" limestone, which appear to be lateral equivalents of the Cipero Marl and San Fernado Fm. AGE: Late Oligocene on the basis of large foraminiferal biostratigraphy. STRATIGRAPHIC POSITION: From unknown position within these units

• member-level stratigraphic resolution

Environment/lithology: coastal; lithified limestone

• ENVIRONMENT: Fauna appears relatively shallow.
• LITHOLOGY: Not stated, but presumably a limestone on the basis of lithostratigraphic name. LITHIFICATION: Lithified, based on facies description.

Size classes: macrofossils, microfossils

Collection methods: COLLECTORS: Multiple collectors including R. Rutsch, Vaughn, Cole, and C.M.B. Caudri. REPOSITORY: Unknown.

Primary reference: R. M. Stainforth. 1948. Description, correlation, and paleoecology of Tertiary Cipero Marl, Trinidad, BWI. Bulletin of the American Association of Petroleum Geologists 32(7):1292-1330 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93368: authorized by Austin Hendy, entered by Austin Hendy on 15.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Not an authoritative publication, with rather antiquated nomenclature, though with identifications made to species resolution.
Rotaliina
 Nummulitacea - Nummulitidae
"Operculinoides semmesi" = Nummulites, "Operculinoides bullbrooki" = Nummulites
"Operculinoides semmesi" = Nummulites
"Operculinoides bullbrooki" = Nummulites
 Orbitoidacea - Lepidocyclinidae
Bivalvia
 Pectinida - Pectinoidae
"Amussium aff. lyonii" = Amusium, "Pecten (Lyropecten) aff. condylomaius" = Lyropecten
"Amussium aff. lyonii" = Amusium scallop
"Pecten (Lyropecten) aff. condylomaius" = Lyropecten scallop
 Mytilida - Mytilidae
Lithophaga nigra d'Orbigny 1845 mussel
 Pholadida - Teredinidae
 Lucinida - Lucinidae
"Phacoides (Miltha) aff. hillsboroensis" = Miltha hillsboroensis
"Phacoides (Miltha) aff. hillsboroensis" = Miltha hillsboroensis Heilprin 1887 clam
Gastropoda
 Tonnoidea - Cassidae
Cassis cf. sulcifera Sowerby 1850 snail
 Sorbeoconcha - Turritellidae
Miogypsina
  - Miogypsinidae