Echinoidea - Irregularia - Nucleolitidae
Alternative combination: Nucleopygus angustatus
Full reference: W. B. Clark and M. W. Twitchell. 1915. The Mesozoic and Cenozoic Echinodermata of the United States. United States Geological Survey Bulletin 54:1-341
Belongs to Echinobrissus according to W. B. Clark and M. W. Twitchell 1915
See also Kier 1962
Sister taxa: Nucleolites hori, Nucleolites scutatus, Echinobrissus atlanticus, Echinobrissus pilensis, Echinobrissus expansus, Echinobrissus orbicularis, Echinobrissus clunicularis, Echinobrissus terquemi, Echinobrissus lefebvrei, Echinobrissus ammonis, Echinobrissus elongatus
Type specimen: Its type locality is Shoal Creek at the Oaks [Buda Limestone], which is in a Cenomanian marine limestone in the Buda Limestone Formation of Texas
Ecology: epifaunal grazer-deposit feeder
Distribution: found only at Shoal Creek at the Oaks [Buda Limestone]
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.