Macraster wenoensis Adkins, 1920

Remarks

• Collector:      Keith Minor
• Formation:    Upper Washita Group, Weno Limestone
• Location:       Tarrant County, TX.
• Dimensions:   lt = 33 mm; wt = 30 mm (widest part); ht = 17 mm (tallest part)

General Info

Synonyms (older names and misidentifications in the literature)

• 1915 Hemiaster elegans (Shumard); Clark (in part)

• 1920 Epiaster wenoensis Adkins

• 1920 Macraster nodopyga Lambert

• 1927 Macraster wenoensis (Adkins); Lambert

• 1928 Macraster wenoensis (Adkins); Adkins

• 1928 Macraster nodopyga (Lambert); Adkins

• 1930 Macraster nodopyga (Lambert); Adkins

• 1930 Macraster wenoensis (Adkins); Adkins

• 1946 Hemiaster elegans wenoensis (Adkins); Cooke

• 1987 Macraster nodopyga Lambert; Akers & Akers

• 1987 Macraster wenoensis (Adkins); Akers & Akers

Stratigraphic Occurrence

• Upper Washita Group, Pawpaw Formation of north-central Texas

• Upper Washita Group, Weno Formation of north–central Texas

Age

• Macraster elegans wenoensis (Adkins) ranges in the Mortoniceras (Angolaites) drakei (Young) and Mariella (Wintonia) brazoensis (Roemer) zones, latest Albian to earliest Cenomanian Stage (~97 mya).

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

• Johnson County, TX

• Tarrant County, TX

Remarks

         For identification and descriptions, see:

• Adkins, W. S. 1930. Texas Comanchean Echinoids of the Genus Macraster. University of Texas Bulletin 3001, 101–120.
• Cooke, C. W.  1946.  Comanche Echinoids.  Journal of Paleontology 20 (3), 228–229 and plate 33 fig 8.