Spencer's Point Formation - Black Watch Pass (Pleistocene of Bermuda)

Also known as Loc. 8

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: Spencer's Point Formation, Middle Pleistocene (0.8 - 0.1 Ma)

• STRATIGRAPHIC RELATIONS: From Spencer's Point Formation (Middle-Late Pleistocene), which lies between the Pembroke Fm (Middle-Late Pleistocene) and the Southampton Fm (Late Pleistocene). THICKNESS: Unknown thickness of unit AGE: Shells are radiometrically dated to 130 Ka. STRATIGRAPHIC POSITION: Unknown position with unit.

• bed-level stratigraphic resolution

Environment/lithology: foreshore; poorly lithified, calcareous sandstone

• ENVIRONMENT: Intertidal, marine, beach and eolian calcarenites.
• SPECIFIC LITHOLOGY: Calcarenites. LITHIFICATION: Poorly lithified, presumed based on age and facies description (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 67961: 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
 Neogastropoda - Olividae
Olivella sp. Swainson 1831 olive snail
 Neogastropoda - Nassariidae
"Nassarius albus" = Nassarius antillarum
"Nassarius albus" = Nassarius antillarum d'Orbigny 1847 snail
 Neogastropoda - Columbellidae
Columbella mercatoria Linnaeus 1758 snail
Bivalvia
 Arcida - Arcidae
Barbatia candida Helbling 1779 clam
Arca zebra Swainson 1833 ark
 Pectinida - Limidae
Lima caribaea2 d'Orbigny 1853 file clam
 Lucinida - Lucinidae
"Divaricella quadrisulcata" = Divalinga quadrisulcata, "Codakia costata" = Parvilucina costata, Lucina pensylvanica1, "Codakia orbiculata" = Ctena orbiculata
"Divaricella quadrisulcata" = Divalinga quadrisulcata d'Orbigny 1846 clam
"Codakia costata" = Parvilucina costata d'Orbigny 1846 clam
Lucina pensylvanica1 Linnaeus 1758 clam
[entered as Lucina pennsylvanica]
"Codakia orbiculata" = Ctena orbiculata Montagu 1808 clam