Montezuma Formation (unspecified localities) (Pleistocene of Costa Rica)

Where: Costa Rica (9.7° N, 85.1° W: paleocoordinates 9.7° N, 85.1° W)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Montezuma Formation, Pleistocene (2.6 - 0.0 Ma)

• LITHOSTRATIGRAPHY: From the Montezuma Formation. AGE: Pleistocene, according to Baumgartner et al. (1984, p. 96, 126); justification not provided in text; Pliocene in Aguilar (1987); placed in Pleistocene by enterer on the basis of Jung (1989). STRATIGRAPHIC POSITION: List is representative of formation.

• formation-level stratigraphic resolution

Environment/lithology: coastal; fine-grained, calcareous sandstone

• ENVIRONMENT: Not stated in text, but likely from a shallow marine siliciclastic facies.
• LITHOLOGY: Fine calcareous sandstone. LITHIFICATION: Unknown.

Size class: macrofossils

Collection methods: surface (float), surface (in situ),

• COLLECTOR: Multiple collectors. REPOSITORY: Unknown, presumably in Costa Rica, but also NMB.

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: general faunal/floral analysis

PaleoDB collection 136817: authorized by Austin Hendy, entered by Austin Hendy on 04.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

• NOMENCLATURE: From an authoritative publication, with species-resolution identifications, and modern nomenclature. COVERAGE: Limited to taxa described in text.
Gastropoda
 Sorbeoconcha - Personidae
Distorsio constricta Broderip 1835 snail
Distorsio minoruohnishii Parth 1989 snail
Distorsio decussata Valenciennes 1832 snail
 Sorbeoconcha - Tonnidae
Malea ringens Swainson 1822 tun shell
 Sorbeoconcha - Ranellidae
Turritriton gibbosus Broderip 1833 triton shell
 Sorbeoconcha - Bursidae
Marsupina nana Broderip and Sowerby 1829 frog shell