Stromboidea

• Rostellariidae
  • Calyptraphorus
    • Calyptraphorus trinodiferus Conrad, 1857

Original Description of Calyptraphorus trinodiferus by Conrad, 1857, cited by Clark & Martin, 1901:

• "Subfusiform, with three distinct nodes on the upper part of the body volution; spire subtriangular, having curved longitudinal ribs visible beneath the tunic; rostrum of the spire elongated and curved; labrum with a prominent angle above."

Stratum typicum: Eocene

Locus typicus: Alabama, USA

History and Synonymy

1860

Calyptraphorus trinodiferus Conrad, 1860, pl. XLVII, fig. 29

1868

Calyptraphorus trinodiferus in Gabb, 1868, pl. 13, fig. 10

1890

Rostellaria (Calyptraphorus) trinodifera in De Gregorio, 1890, pl. 10, fig. 3 - 6

1901

Calyptraphorus trinodiferus Conrad in Clark & Martin, 1901, pl. 25, fig. 3

Calyptraphorus trinodiferus Conrad var. in Clark & Martin, 1901, pl. 25, fig. 4, 4a

1904

Rostellaria (Calyptrophorus) trinodifera in Cossmann, 1904, pl. III, fig. 3

2013

Science Base Catalog, USGS, 2013 reports

• "Invertebrate fossil, GSA Cenozoic Toulmin number 3830, from the GSA Cenozoic Toulmin invertebrate paleontology collection. This specimen box contains 1 specimen(s) of the Snail Calyptraphorus trinodiferus from the Eocene Hatchetigbee Formation in Clarke County, AL, USA"

Specimens from institutional collections

Calyptraphorus trinodiferus Conrad, 1857; Eocene; Claiborne, Monroe County, Alabama, USA; 35mm; Coll. BM(NH) no. G.834; Copyright BM(NH)

Calyptraphorus trinodiferus Conrad, 1857; Wilcoxian; Bells Landing, Alabama, USA; Coll. BM(NH)

Specimens from private collections

Calyptraphorus trinodiferus Conrad, 1858; Bells Landing Member of the Tuscahoma Formation, Upper Paleocene (Thanetian); Bells Landing on the Alabama River, Monroe County, Alabama USA; 53 mm; 2007; Coll. Michael Reagin MR 8147-976

Calyptraphorus trinodiferus Conrad, 1857; Wilcox Stage, Bashi Formation, lower Eocene; West of Butler, Highway 10, Butler, Choctaw County, Alabama, USA; Coll. Aart Dekkers no. STR9107

References

• Conrad, T. A. (1857). Descriptions of two new genera of shells. Proceedings of the Academy of Natural Sciences of Philadelphia. 9: 165-166.
• Conrad, 1860