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.
 Tonnoidea - Bursidae
Marsupina nana Broderip and Sowerby 1829 frog shell
Distorsio minoruohnishii Parth 1989 frog shell
Distorsio decussata Valenciennes 1832 frog shell
Distorsio constricta Broderip 1835 frog shell
Turritriton gibbosus Broderip 1833 triton shell
Malea ringens Swainson 1822 tun shell