Abstract

"Species" of the genus Phlycticrioceras have been reported from Europe and North America during the last 100 years. This genus is characterized by 2 rows of ventro-lateral tubercles and a single row of ventrally placed tubercles. All forms described and figured appear uniform in ornamentation and whorl shape and may represent a single species. The genus is now known from several localities in central and W. Texas and at least 2 of the Texas collections are evidently of Campanian age. The European and North American material previously reported is of late Coniacian age; yet all forms reported appear to be conspecific.

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