Portland Creek Pond (Holocene) (Holocene of Canada)

Also known as Newfoundland Loc. 3

Where: Newfoundland and Labrador, Canada (50.2° N, 57.5° W: paleocoordinates 50.2° N, 57.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Holocene (0.0 - 0.0 Ma)

• LITHOSTRATIGRAPHY: No lithostratigraphic unit reported in text. From emergent features along coast increasng in elevation to 250 ft above sea level. AGE: Late Wisconsin (Richards 1940). Coleman (1926) favored multiple glacial events, although MacClintock and Twenhofel (1940) and Richards (1940) indicate that deposits in Newfoundland are isochronous.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; unlithified mixed carbonate-siliciclastic sediments

• ENVIRONMENT: No specific environment provided in text for individual collection. Richards (1962) reports that collections were generally deposited in a cold, shallow sea.
• SPECIFIC LITHOLOGY: No detailed lithologic data reported in text. LITHIFICATION: Assumed to be unlithified given age and figured specimens in Richards (1962).

Size class: macrofossils

Collection methods: COLLECTORS: Collected by R.F. Flint, P. MacClintock, H. Johnson, A.K. Snelgrove, J. Wheeler, and others. Based on checklists of Richards (1940). REPOSITORIES: Collections held in various museums, possibly including the Academy of Natural Sciences, USNM, MCZ (Cambridge), and AMNH.

Primary reference: H. G. Richards. 1962. Studies on the marine Pleistocene: Part II. The marine Pleistocene mollusks of eastern North America. Transactions of the American Philosophocal Society 52(3):1-142 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 66432: authorized by Austin Hendy, entered by Austin Hendy on 09.10.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda, bivalvia, and polyplacophora. NOMENCLATURE: Not an authoratative publication, and somewhat antiquated. However, all occurrences include species-resolution assignments and list synonymies.
Bivalvia
 Nuculanida - Nuculanidae
Nuculana pernula Müller 1779 pointed nut clam
 Nuculida - Nuculidae
"Nucula expansa" = Ennucula tenuis
"Nucula expansa" = Ennucula tenuis Montagu 1808 nut clam
 Carditida - Astartidae
"Astarte striata" = Astarte montagui
"Astarte striata" = Astarte montagui Dillwyn 1817 clam
 Carditida - Carditidae
"Venericardia borealis" = Cyclocardia borealis
"Venericardia borealis" = Cyclocardia borealis Conrad 1831 clam
 Cardiida - Cardiidae
"Serripes groenlandicus" = Serripes (Serripes) groenlandicus
"Serripes groenlandicus" = Serripes (Serripes) groenlandicus Mohr 1786 cockle
 Cardiida - Tellinidae
"Macoma calcarea" = Macoma (Macoma) calcarea
"Macoma calcarea" = Macoma (Macoma) calcarea Gmelin 1792 tellin clam
 Pholadida - Myidae
"Mya truncata" = Mya (Mya) truncata
"Mya truncata" = Mya (Mya) truncata Linnaeus 1758 softshell clam
 Hiatellida - Hiatellidae
Hiatella arctica Linnaeus 1767 clam
 Pectinida - Pectinoidae
"Chlamys islandicus" = Chlamys (Chlamys) islandica
"Chlamys islandicus" = Chlamys (Chlamys) islandica Müller 1776 scallop
 Mytilida - Mytilidae
"Modiolus modiolus" = Modiolus (Modiolus) modiolus
"Modiolus modiolus" = Modiolus (Modiolus) modiolus Linnaeus 1758 mussel
Gastropoda
 Patellida - Acmaeidae
"Acmaea testudinalis" = Testudinalia testudinalis
"Acmaea testudinalis" = Testudinalia testudinalis Müller 1776 limpet
 Neogastropoda - Buccinidae
Buccinum undatum Linnaeus 1758 true whelk
Neptunea despecta Linnaeus 1758 true whelk
Subspecies: N. despecta tornata
 Sorbeoconcha - Naticidae
"Polinices groenlandicus" = Euspira pallida
"Polinices groenlandicus" = Euspira pallida Broderip and Sowerby 1829 moon snail