Arctica texana (Conrad, 1857)

Remarks

• Collector:    Keith Minor

• Formation:  Trinity Group, Glen Rose Formation

• Location:     Travis County, TX

Above two pictures from the Glen Rose Formation, Hays County, Texas

(collected by Ann Livingston)

General Info

Synonyms (older names and misidentifications in the literature)

• 1857 Trigonia texana Conrad

• 1893 Cyprina texana (Conrad); Cragin

• 1928 Arctica texana (Conrad); Adkins

• 1937 Arctica texana (Conrad); Whitney

• 1943 Arctica texana (Conrad); Plummer

• 2002 Arctica texana (Conrad); Akers & Akers

Stratigraphic Occurrence

• Trinity Group, Upper Glen Rose Formation of Central Texas.   It may extend down into the lower part of the formation.

Age

• Arctica texana (Conrad) occurs in the upper part of the Glen Rose Limestone, in the Hypacanthoplites comalensis (Scott) zone of Young, Early Albian Stage (~108 mya).

Geographic Occurrence (not an all-inclusive list)

• Bosque County, TX

• Burnet County, TX

• Comal County, TX

• Erath County, TX

• Gillespie County, TX

• Lampasas County, TX

• Parker County, TX

• Travis County, TX

Remarks

 For identification and descriptions, see:

• Cragin, F. W. 1893. A Contribution to the Invertebrate Paleontology of the Texas Cretaceous. Texas Geological Survey, Annual Report 4 (2), 139–294.