Dumblea symmetrica Cragin, 1893

Remarks

• Collector:    Dan Woehr

• Formation:  Washita Group, Boracho Formation, San Martine Member

• Location:     Culberson County, Texas

General Info

Synonyms (older names and misidentifications in the literature)

• 1893 Dumblea symmetrica Cragin

• 1909 Dumblea symmetrica Cragin; Lambert & Thiery

• 1915 Pedinopsis symmetrica (Cragin); Clark

• 1928 Micropedina symmetrica (Cragin); Adkins

• 1936 Dumblea symmetrica Cragin; Smiser

Stratigraphic Occurrence

• Washita Group, Boracho Formation, San Martine Member of Trans-Pecos, Texas

• Washita Group, Boracho Formation, Levinson Member of Trans-Pecos, Texas

• Washita Group, Weno Formation of north-central Texas

Age

• Dumblea symmetrica Cragin ranges from the Eopachydiscus marcianus (Shumard) zone to the Mortoniceras (Angolaites) drakei (Young) zone (~101-97 mya).

Geographic Occurrence (by no means an all-inclusive list)

• Culberson County, Texas

• Jeff Davis County, Texas

• Tarrant County, Texas

Remarks

          For identification and descriptions, see:

• Smiser, J. S.  1936.  Cretaceous Echinoids from Trans-Pecos Texas.  Journal of Paleontology 10 (6), 457, plate 62, fig's 17-20.