Location 23, Rio Palenque (Gatuncillo Formation) - Woodring (1957) (Eocene of Panama)

Also known as USGS 24553

Where: Colon, Panama (9.4° N, 79.9° W: paleocoordinates 9.4° N, 79.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Gatuncillo Formation, Middle Eocene (47.8 - 37.7 Ma)

• STRATIGRAPHIC RELATIONSHIPS: From the Gatuncillo Fm, which is overlain by the Camito Fm, and unconformably overlies Cretaceous basement. AGE: Middle Eocene-Late Eocene; here assigned to Middle Eocene on the basis of stratigraphic position.

• bed-level stratigraphic resolution

Environment/lithology: coastal; silty mudstone

• Siliciclastic setting. No further paleoenvironmental information provided.
• Silty mudstone

Size class: macrofossils

Reposited in the USNM

Collection methods: quarrying,

• Collected by Stewart, R.H., Allen, J.L., and A. Mena (1968). 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.

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 49497: authorized by Austin Hendy, entered by Austin Hendy on 18.04.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for gastropoda, some bivalvia.
Gastropoda
 Neritoidea - Neritidae
Neritina sp. Lamarck 1816 snail
Neritina ectypha Woodring 1973 snail
Nerita listrota Woodring 1973 snail
Nerita hadra Woodring 1973 snail
 Cerithioidea - Potamididae
 Cerithioidea - Cerithiidae
Bezanconia cosmeta cerith snail
 Cerithioidea - Thiaridae
Bayania epelys Woodring 1973 snail
 Cerithioidea - Pachychilidae
Charadreon leptus Woodring 1973 snail
 Architaenioglossa - Ampullinidae
 Neotaenioglossa - Calyptraeidae
Calyptraea lispa slipper shell
 Neogastropoda - Muricidae
Cymia (Tritonopsis) sp. Mörch 1860 murex snail
 Neogastropoda - Drilliidae
? Leptadrillia sp. Woodring 1928 snail
 Neogastropoda -
 Sorbeoconcha - Tornidae
"Teinostoma (Idioraphe) elachistum" = Teinostoma (Idioraphie)
"Teinostoma (Idioraphe) elachistum" = Teinostoma (Idioraphie) snail
Bivalvia
 Mytilida - Mytilidae
? Brachidontes sp. Swainson 1840 mussel