Pomparippu [Jaffna Limestone] (Miocene of Sri Lanka)

Where: Sri Lanka (8.3° N, 79.9° E: paleocoordinates 1.5° N, 76.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Jaffna Limestone Formation, Burdigalian (20.4 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From Jaffna Limestone, which unconformably overlies Precambrian basement, and is unconformably overlain by recent sand dunes and coral reefs, and Quaternary red earth. AGE: late Early Miocene (Burdigalian) on the basis of foraminifera. STRATIGRAPHIC POSITION: From unknown position within formation.

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, shelly/skeletal, white, yellow limestone

• ENVIRONMENT: Shallow marine, carbonate facies, probably adjacent to coral reef environments.
• SPECIFIC LITHOLOGY: Hard, partly crystalline, compact, indistinctly bedded creamy coloured rock. Massive in parts but some layers are richly fossiliferous. LITHIFICATION: Lithified, based on facies description.

Size class: macrofossils

Collection methods: COLLECTOR: Unknown collector. REPOSITORY: Unknown repository, possibly Geological Survey Department, Sri Lanka or the National Museum of Sri Lanka.

Primary reference: P. G. Cooray. 1984. An Introduction to the Geology of Sri Lanka (Ceylon) 1-340 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 77476: authorized by Austin Hendy, entered by Austin Hendy on 13.01.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda, bivalvia, foraminifera, and anthozoa. NOMENCLATURE: Not an authoritative publication, but with relatively modern nomenclature, and subgenus and species-resolution assignments.
 Pectinida - Pectinoidae
"Chlamys senatoria" = Mimachlamys senatoria
"Chlamys senatoria" = Mimachlamys senatoria Gmelin 1791 scallop