Minihagalkanda (Miocene of Sri Lanka)

Also known as 68 F/11, A.1

Where: Sri Lanka (6.4° N, 81.5° E: paleocoordinates 6.4° N, 81.5° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Jaffna Limestone Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From unknown lithostratigraphic unit (not stated in text) and hence lithostratigraphic relationships are unknown. AGE: Early Miocene, based on faunal correlations with lower Gaj of Pakistan and India.

• 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: surface (in situ),

• COLLECTOR: Wayland or Davies (c. 1920). REPOSITORY: Presumably BMNH.

Primary reference: F. E. Eames. 1950. On the ages of certain Upper Tertiary beds of Peninsula India and Ceylon. Geological Magazine 87:233-252 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 77650: authorized by Austin Hendy, entered by Austin Hendy on 16.01.2008, edited by Wolfgang Kiessling

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to representative forms of gastropoda and bivalvia. NOMENCLATURE: Not an authoritative publication and somewhat antiquated, though nevertheless, consistent use of subgenera and species-resolution assignments permit nomenclatural vetting.
 Nummulitacea - Nummulitidae
 Pectinida - Pectinoidae
 Ostreida - Gryphaeidae
"Ostrea (Lopha) virleti" = Hyotissa virleti
"Ostrea (Lopha) virleti" = Hyotissa virleti Deshayes 1832 oyster
 Ostreida - Pinnidae
 Carditida - Carditidae
 Cardiida - Veneridae
"Antigona puerpera" = Periglypta puerpera Linnaeus 1758 venus clam
SUBSPECIES: Antigona puepera granosa
 Cardiida - Cardiidae
 Architaenioglossa - Ampullinidae
"Euspirocrommium oweni" = Pachycrommium oweni
"Euspirocrommium oweni" = Pachycrommium oweni d'Archiac and Haime 1854 snail
 Neogastropoda - Conidae
Conus (Lithoconus) litteratus Linnaeus 1758 cone shell
 Cypraeoidea - Cypraeidae
"Cypraea (Lyncina) jenkinsi" = Luria (Basilitrona) jenkinsi d'Archiac and Haime 1853 cowry
 Xenophoroidea - Xenophoridae
"Xenophora" sp. Fischer von Waldheim 1807 carrier shell
 Sorbeoconcha - Cerithiidae
Ptychocerithium archiaci Vredenburg 1928 cerith snail
 Trochoidea - Trochidae
Tectus loryi d'Archaic and Haime 1853 top snail
 Clypeasteroida - Clypeasteridae
 Scleractinia - Montlivaltiidae
"Montlivaltia" brevis Duncan 1864 stony coral