Coll. 2 - North of Gatun Locks [Mount Hope Fm] (Pleistocene of Panama)

Where: Panama (9.3° N, 79.9° W: paleocoordinates 9.2° N, 79.6° W)

• outcrop-level geographic resolution

When: Mount Hope Formation, Early/Lower Pleistocene (2.6 - 0.8 Ma)

• STRATIGRAPHIC RELATIONS: From what Scott (pers comm., 1911) referred to as the "Mount Hope Fm", which at this locality overlies the Gatun Fm. THICKNESS: Unknown stratigraphic thickness. AGE: Pleistocene, presumably (given geographic position) the Early Pleistocene. STRATIGRAPHIC POSITION: From the oyster bearing strata lying unconformably upon the Gatun Fm.

• bed-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; unlithified, shelly/skeletal, carbonaceous mudstone

• ENVIRONMENT: Shallow marine, siliciclastic-dominated setting adjacent to mangrove swamp. Deposited at the head of an estuary or bay.
• SPECIFIC LITHOLOGY: Black, unconsolidated mud, carbonaceous. LITHIFICATION: Unlithified, based on facies description.

Size class: macrofossils

Collection methods: sieve,

• COLLECTOR: W.B. Scott and M.D.F. MacDonald (1911). Collected by suction dredge. REPOSITORY: ANSP, Philadelphia.

Primary reference: A. P. Brown and H. A. Pilsbry. 1913. Two collections of Pleistocene fossils from the Isthmus of Panama. Proceedings of the Academy of Natural Sciences 65(2):493-500 [A. Hendy/A. Hendy/S. Ávila]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80307: authorized by Austin Hendy, entered by Austin Hendy on 12.04.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for Bivalvia and Gastropoda, and including Cirripedia and Anthozoa. NOMENCLATURE: Antiquated, but identified to species-resolution.
Thecostraca
 Balanomorpha - Balanidae
Balanus eburneus Gould 1841 barnacle
Bivalvia
 Ostreida - Ostreidae
"Ostrea virginica" = Crassostrea virginica
"Ostrea virginica" = Crassostrea virginica Gmelin 1791 oyster
 Cardiida - Cyrenidae
 Cardiida - Veneridae
Anomalocardia cuneimeris Conrad 1846 venus clam
 Cardiida - Dreissenidae
"Congeria (Mytilopsis) cochleata" = Mytilopsis leucophaeata
"Congeria (Mytilopsis) cochleata" = Mytilopsis leucophaeata Conrad 1831 clam
 Lucinida - Lucinidae
Phacoides pectinatus Gmelin 1791 clam
Gastropoda
 Neogastropoda - Melongenidae
Melongena melongena Linnaeus 1758 snail
 Cerithioidea - Potamididae
 Neritoidea - Neritidae
Neritina virginea Linnaeus 1758 snail