Plicatula urticosa (Morton, 1833)

Remarks

• Collection:   Mississippi Museum of Natural Science.  Photos by Curator George Phillips.  Thanks!

• Formation:  Navarro Group Equivalent, Prairie Bluff Formation

• Location:     Pontotoc County, Mississippi

General Info

Synonyms (other reports in the literature)

• "Cat's Paw Clam"
• 1833 Ostrea urticosa Morton
• 1834 Plicatula urticosa (Morton)
• 1861 Plicatula urticosa (Morton); Gabb
• 1864 Plicatula urticosa (Morton); Meek
• 1868 Plicatula urticosa (Morton); Conrad
• 1886 Plicatula urticosa (Morton); Whitfield
• 1905 Plicatula urticoas (Morton); Johnson
• 1907 Plicatula urticosa (Morton); Weller
• 1926 Does not = Plicatula urticosa (Morton); Stephenson

Stratigraphic Occurrence

• Monmouth Group, Navesink Formation of New Jersey
• Prairie Bluff Formation of Mississippi
• The Texas material (Navarro Group, Corsicana Marl) has been referred to P. mullicaensis Weller (both species are figured in Weller, 1907).

Age

• Plicatula urticosa (Morton) is a Maastrichtian age clam (~68 mya), and it may range into the very Late Campanian.

Geographic Occurrence (not an all-inclusive list)

• Monmouth County, NJ
• Pontotoc County, MS

Remarks

         For identification and descriptions, see:

• Weller, S.  1907.  A Report on the Cretaceous Paleontology of New Jersey, Based Upon the Stratigraphic Studies of George N. Knapp.  Geological Survey of New Jersey Paleontology Series 4, 484–485; plate LII, fig's 1 and 2.  Compare with Plicatula mullicaensis Weller, 1907, 485; plate LII, fig's 3–5.