Belmont Formation - South end Ireland Island (Pleistocene of Bermuda)

Also known as Loc. 14

Where: Bermuda (32.3° N, 64.7° W: paleocoordinates 32.3° N, 64.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Belmont Formation, Middle Pleistocene (0.8 - 0.1 Ma)

• STRATIGRAPHIC RELATIONS: From Belmont Formation, which lies between the Walsingham Fm (Early-Middle Pleistocene) and the Devonshire Fm (Late Pleistocene). THICKNESS: Unknown thickness of unit AGE: Shells are radiometrically dated to 300 Ka. STRATIGRAPHIC POSITION: Unknown position with unit.

• bed-level stratigraphic resolution

Environment/lithology: foreshore; poorly lithified, calcareous sandstone

• ENVIRONMENT: Shallow-marine, beach, and dune.
• SPECIFIC LITHOLOGY: Complex shallow-marine, beach, and poorly developed dune calcarenites. LITHIFICATION: Poorly lithified, presumed based on age and facies description (poorly developed, calcarenite).

Size class: macrofossils

Preservation: original aragonite, original calcite

Reposited in the ANSP

Collection methods: quarrying,

• COLLECTOR: H.G. Richards and T. Skymer (June, 1967), B. Bitters (June, 1968), and previously S. B. Upchurch and L. Vacher. REPOSITORY: Dept. of Geology, Academy of Natural Sciences.

Primary reference: H. G. Richards, R. T. Abbott, and T. Skymer. 1969. The marine Pleistocene mollusks of Bermuda. Notulae Naturae 425:1-10 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 67966: authorized by Austin Hendy, entered by Austin Hendy on 19.12.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for Mollusca. NOMENCLATURE: Not an authoritative publication, but identifications by specialists, with species level designations.
Gastropoda
 Lepetellida - Fissurellidae
Diodora cayenensis Lamarck 1822 snail
Fissurella barbadensis Gmelin 1791 snail
 Cerithioidea - Cerithiidae
Cerithium eburneum Bruguière 1792 cerith snail
 Neogastropoda - Buccinidae
"Cantharus tinctus" = Gemophos tinctus
"Cantharus tinctus" = Gemophos tinctus Conrad 1846 true whelk
 Neogastropoda - Nassariidae
"Nassarius albus" = Nassarius antillarum
"Nassarius albus" = Nassarius antillarum d'Orbigny 1847 snail
 Neogastropoda - Columbellidae
Columbella mercatoria Linnaeus 1758 snail
 Sorbeoconcha - Rissoidae
"Rissoina bryerea" = Schwartziella bryerea
"Rissoina bryerea" = Schwartziella bryerea Montagu 1803 snail
 Sorbeoconcha - Cerithiopsidae
Seila adamsii Lea 1845 snail
 Sorbeoconcha - Truncatellidae
 Opisthobranchia - Bullidae
Bulla striata Bruguiére 1792 snail
Bivalvia
 Arcida - Arcidae
"Barbatia domingensis" = Acar domingensis, Arca zebra
"Barbatia domingensis" = Acar domingensis Lamarck 1819 miniature ark
Arca zebra Swainson 1833 ark
 Mytilida - Mytilidae
Brachidontes exustus Linnaeus 1758 mussel
 Lucinida - Lucinidae
"Codakia costata" = Parvilucina costata, Lucina pensylvanica, "Codakia orbiculata" = Ctena orbiculata
"Codakia costata" = Parvilucina costata d'Orbigny 1846 clam
Lucina pensylvanica Linnaeus 1758 clam
[entered as Lucina pennsylvanica]
"Codakia orbiculata" = Ctena orbiculata Montagu 1808 clam
 Cardiida - Chamidae
Chama macerophylla Gmelin 1791 jewel box
 Cardiida - Veneridae
Pitar sp. Römer 1857 venus clam
 Cardiida - Ungulinidae
Diplodonta punctata Say 1822 clam
 Cardiida - Cardiidae
Americardia media Linnaeaus 1758 cockle