NMB 18987 - Gobea [Río Indio facies, Chagres Sandstone] (Miocene of Panama)

Where: Panama (9.2° N, 80.1° W: paleocoordinates 9.0° N, 78.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Río Indio Member (Chagres Sandstone Formation), Tortonian (11.6 - 7.2 Ma)

• LITHOSTRATIGRAPHY: Chagres Sandstone overlies and partly overlaps the Gatun Fm. Calcareous strata at the base of the formation throughout most of the outcrop area in the Canal Zone constitutes the Toro Limestone Mbr. The Chagres Sandstone is as much as 1000 ft thick. AGE: Late Miocene (late Tortonian-Messinian) according to Collins and Coates 1999), but Río Indio facies are also thought to be Pliocene in age; Sr dating by the enterer (Hendy, unpubl.) indicates an age of approximately 7.6 Ma. STRATIGRAPHIC POSITION: From the Río Indio facies.

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, gray siltstone

• No specific environmental data presented.
• GENERAL LITHOLOGY: Grey silts with scattered molluscs.

Size class: macrofossils

Collection methods: surface (in situ),

• COLLECTOR: Not stated in text. RESPOSITORY: NMB, Basel, Switzerland.

Primary reference: A. G. Beu. 2010. Neogene Tonnoidean Gastropods of Tropical and South America; contributions to the Dominican Republic and Panama Paleontology Projects and Uplift of the Central American Isthmus. Bulletins of American Paleontology (377-378)1-550 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 136701: authorized by Austin Hendy, entered by Austin Hendy on 02.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to tonnoidean gastropods. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications.
Gastropoda
 Tonnoidea - Personidae
Distorsio clathrata Lamarck 1816 snail
 Tonnoidea - Cassidae
Sconsia grayi Adams 1855 snail