USGS 6012a, Canal Zone (Miocene of Panama)

Also known as Woodring Loc. 102

Where: Panama (9.1° N, 79.7° W: paleocoordinates 8.4° N, 77.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: upper Member (Culebra Formation), Burdigalian (20.4 - 16.0 Ma)

• LITHOSTRATIGRAPHY: From the Culebra Formation, which unconformably overlies the Las Cascadas agglomerate; emended by Kirby et al. (2009) to the upper member of the Culebra Formation. AGE: Early Miocene in text; direct date extrapolated from Kirby et al. (1999), =Burdigalian. STRATIGRAPHIC POSITION: From unknown position within member.

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, fine-grained shale and carbonaceous mudstone

• No paleoenvironmental data reported.
• Collection assumed to be from lower part of formation. The lower part of the formation comprises: dark-colored, thin-bedded or laminated, fine-grained rocks; carbonaceous or lignitic shale, carbonaceous silty mudstone, tuffaceous siltstone. The upper part comprises: calcareous and sandy strata, and ranges from tuffaceous amd pebbly calcareous sandstone to sandy limestone.

Size class: macrofossils

Collected by D.F. MacDonald, T.W. Vaughan in 1911; reposited in the USNM

Collection methods: quarrying,

• Collected by MacDonald and Vaughan (1911). Material is also held (but not specified for any specific collection) at Stanford University, Acad. Nat. Sci. Phil., Corenell University, PRI, U. Cal. and Cal. Acad. Sci. Locality now unaccessible (submerged).

Primary reference: W. P. Woodring. 1957. Geology and Paleontology of Canal Zone and adjoining parts of Panama. United States Geological Survey Professional Paper 306(A) [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 42623: authorized by Austin Hendy, entered by Austin Hendy on 03.08.2004, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for gastropoda.
 Arcida - Arcidae
"Anadara (Hawaiarca) sp." = Barbatia (Hawaiarca)5, Anadara (Grandiarca) balboai5
"Anadara (Hawaiarca) sp." = Barbatia (Hawaiarca)5 Dall et al. 1938 clam
 Lucinida - Lucinidae
Lucinisca calhounensis6 Dall 1903 clam
 Nuculida - Nuculidae
Acila sp.5 Adams and Adams 1858 divaricate nutclam
 Protobranchia - Nuculanidae
Adrana sp.5 Adams and Adams 1858 pointed nut clam
 Neogastropoda - Buccinidae
"? Antillophos (? Antillophos) cf. candei" = Antillophos candeanus4
"? Antillophos (? Antillophos) cf. candei" = Antillophos candeanus4 d'Orbigny 1842 true whelk
Subspecies: ?Antillophos ?(Antillophos) cf. candei gatunensis
 Sorbeoconcha - Ficidae
Ficus carbasea3 Guppy 1866 fig shell
Subspecies: Ficus carbaea micronematica
 Balanomorpha - Balanidae
"Balanus (Hesperibalanus) sp." = Hesperibalanus1
"Balanus (Hesperibalanus) sp." = Hesperibalanus1 Pilsbry 1916 barnacle
 Decapoda - Callianassidae
Callianassa lacunosa n. sp.2 Rathbun 1918 decapod