Portland, Cumberland Co. - Presumpscot Fm (Pleistocene) (Pleistocene of the United States)

Also known as Maine Loc. 2

Where: Portland County, Maine (43.6° N, 70.3° W: paleocoordinates 43.6° N, 70.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Presumpscot Formation, Late/Upper Pleistocene (0.1 - 0.0 Ma)

• LITHOSTRATIGRAPHY: No lithostratigraphic unit reported in text. Bloom (1960) assigned the name "Presumpscot Fm" to the sheet of emerged marine sediments that blankets the coastal region of southwestern Maine. AGE: Wisconsin (Levitt and Perkins, 1935), Late Pleistocene (Bloom 1960), Pleistocene (Richards 1962).

• group of beds-level stratigraphic resolution

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

• ENVIRONMENT: No specific environment provided in text for individual collection. Richards (1962) reports that collections were generally deposited in shallow marine settings, during sea level transgressions.
• SPECIFIC LITHOLOGY: No detailed lithologic data reported in text. Text talks of shell beds for Late Pleistocene deposits in Maine described by Packard (1865), Clapp (1907), and Levitt and Perkins (1935) LITHIFICATION: Assumed to be unlithified given age and figured specimens in Richards (1962).

Size class: macrofossils

Collection methods: COLLECTORS: Based on checklists of Dawson 1873, Clapp (1907), Bloom (1960). REPOSITORIES: Collections held in various museums, including YPM (Hendy, pers. comm.)

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 66338: authorized by Austin Hendy, entered by Austin Hendy on 08.10.2006

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.
Gastropoda
 Trochoidea - Turbinidae
Margarites striatus2 Leach 1819 snail
 Neogastropoda - Buccinidae
Buccinum sp.1 Linnaeus 1758 true whelk
Buccinum glaciale Linnaeus 1761 true whelk
Buccinum cyaneum Bruguière 1789 true whelk
Buccinum polare1 Gray 1839 true whelk
"Neptunea decemcostata" = Neptunea lyrata decemcostata Say 1826 true whelk
Neptunea despecta Linnaeus 1758 true whelk
Subspecies: N. despecta tornata
 Sorbeoconcha - Naticidae
"Polinices groenlandicus" = Euspira pallida, "Natica clausa" = Cryptonatica affinis
"Polinices groenlandicus" = Euspira pallida Broderip and Sowerby 1829 moon snail
"Natica clausa" = Cryptonatica affinis Gmelin 1791 moon snail
Bivalvia
 Nuculanida - Nuculanidae
"Nuculana tenuisulcata" = Nuculana (Nuculana) tenuisulcata, "Nuculana pernula" = Nuculana pernula, "Nuculana buccata" = Nuculana pernula, "Nuculana jacksoni" = Nuculana pernula
"Nuculana tenuisulcata" = Nuculana (Nuculana) tenuisulcata Couthouy 1838 pointed nut clam
"Nuculana pernula" = Nuculana pernula Müller 1779 pointed nut clam
"Nuculana buccata" = Nuculana pernula Müller 1779 pointed nut clam
"Nuculana jacksoni" = Nuculana pernula Müller 1779 pointed nut clam
 Nuculanida - Sareptidae
"Yoldia (Portlandia) glacialis" = Portlandia glacialis
"Yoldia (Portlandia) glacialis" = Portlandia glacialis Wood 1828 clam
 Nuculanida - Yoldiidae
"Yoldia (Yoldiella) lenticula" = Yoldiella lenticula
"Yoldia (Yoldiella) lenticula" = Yoldiella lenticula Möller 1842 clam
 Carditida - Astartidae
Astarte borealis, Astarte elliptica, "Astarte striata" = Astarte montagui, "Astarte banksii" = Astarte montagui
Astarte borealis Chemnitz 1784 clam
Astarte elliptica Brown 1827 clam
"Astarte striata" = Astarte montagui Dillwyn 1817 clam
"Astarte banksii" = Astarte montagui Dillwyn 1817 clam
 Hiatellida - Hiatellidae
Hiatella arctica Linnaeus 1767 clam
 Solenida - Pharidae
Ensis directus Conrad 1844 clam
 Pholadida - Pholadidae
"Zirphaea crispata" = Zirfaea crispata
"Zirphaea crispata" = Zirfaea crispata Linnaeus 1758 clam
 Pholadida - Myidae
"Mya truncata" = Mya (Mya) truncata, "Mya arenaria" = Mya (Arenomya) arenaria
"Mya truncata" = Mya (Mya) truncata Linnaeus 1758 softshell clam
"Mya arenaria" = Mya (Arenomya) arenaria Linnaeus 1758 softshell clam
 Cardiida - Mesodesmatidae
Mesodesma arctatum Conrad 1831 clam
 Cardiida - Mactridae
"Mactra polynyma" = Mactromeris polynyma
"Mactra polynyma" = Mactromeris polynyma Stimpson 1860 clam
 Cardiida - Cardiidae
"Clinocardium ciliatum" = Clinocardium (Ciliatocardium) ciliatum, "Cerastoderma pinnulatum" = Goethemia pinnulata, "Serripes groenlandicus" = Serripes (Serripes) groenlandicus
"Clinocardium ciliatum" = Clinocardium (Ciliatocardium) ciliatum Fabricius 1780 cockle
"Cerastoderma pinnulatum" = Goethemia pinnulata Conrad 1831 cockle
"Serripes groenlandicus" = Serripes (Serripes) groenlandicus Mohr 1786 cockle
 Cardiida - Tellinidae
"Macoma calcarea" = Macoma (Macoma) calcarea
"Macoma calcarea" = Macoma (Macoma) calcarea Gmelin 1792 tellin clam
 Mytilida - Mytilidae
Mytilus edulis Linnaeus 1758 mussel
 Pectinida - Pectinoidae
"Chlamys islandicus" = Chlamys (Chlamys) islandica
"Chlamys islandicus" = Chlamys (Chlamys) islandica Müller 1776 scallop
 Pectinida - Propeamussiidae
"Pecten groenlandica" = Similipecten greenlandicus
"Pecten groenlandica" = Similipecten greenlandicus Sowerby 1842 mud scallop