Las Lomas [lower Gatun Fm] (Miocene of Panama)

Where: Panama (9.4° N, 79.8° W: paleocoordinates 9.1° N, 78.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: lower Gatun Member (Gatun Formation), Tortonian (11.6 - 7.2 Ma)

• STRATIGRAPHIC RELATIONS: From the Gatun Fm, which regionally overlies the Caimito Fm or Mesozoic basement. AGE: Late Miocene. STRATIGRAPHIC POSITION: From middle member of the Gatun Formatio according to the author; the enterer considers this to be the lower member of the Gatun Formation.

• bed-level stratigraphic resolution

Environment/lithology: coastal; unlithified, shelly/skeletal, sandy siltstone

• ENVIRONMENT: Shallow-marine, siliciclastic environment.
• SPECIFIC LITHOLOGY: Sandy mudstone. LITHIFICATION: Poorly-lithified, based on observations of material.

Size class: macrofossils

Preservation: original aragonite

Collected by Landau; reposited in the NHMW

Collection methods: surface (in situ),


Primary reference: B. Landau, R. E. Petit, and C. M. Silva. 2012. New Cancellariidae (Mollusca, Gastropoda) from the Miocene Gatun Formation of Panama, with eleven new species. Journal of Paleontology 86(6):907-930 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 136005: authorized by Austin Hendy, entered by Austin Hendy on 14.11.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to Cancellariidae in text, and subsequent publications. NOMENCLATURE: Authoritative publication with modern nomenclature and species-resolution identifications.
 Decapoda - Callianassidae
Neocallichirus scotti2 Brown and Pilsbry 1913 decapod
Callianassa sp.2 Leach 1814 decapod
Glypturus toulai2 Rathbun 1918 decapod
 Decapoda - Hepatidae
Hepatus lineatus2 Rathbun 1898 crab
 Decapoda - Portunidae
Portunidae indet.2 Rafinesque 1815 swimming crab
Euphylax maculatus2 Collins 2005 swimming crab
 Decapoda - Calappidae
Calappa flammea2 Herbst 1794 box crab
 Neogastropoda - Cancellariidae
Euclia codazzii Anderson 1929 snail
Bivetiella dariena Toula 1908 snail
Pyruclia tweedledee Landau et al. 2012 snail
Cancellaria harzhauseri n. sp. Landau et al. 2012 snail
Cancellaria mixta n. sp. Landau et al. 2012 snail
Massyla terryi Olsson 1942 snail
Axelella panamica Petit 1976 snail
 Tonnoidea - Ranellidae
Monoplex sp.1 Perry 1811 triton shell
Monoplex cercadicus1 Maury 1917 triton shell
Monoplex gatunicus1 Beu 2010 triton shell
Turritriton gibbosus1 Broderip 1833 triton shell
 Tonnoidea - Personidae
Distorsio decussata1 Valenciennes 1832 snail
 Tonnoidea - Tonnidae
Malea ringens1 Swainson 1822 tun shell
 Tonnoidea - Bursidae
Bursa rugosa1 Sowerby 1835 frog shell
 Tonnoidea - Cassidae
Semicassis granulata1 Born 1778 snail