A neptunoceratid cephalopod, Texanoceras jacksboroensis n. gen. n. sp., is described from the Virgilian (Upper Pennsylvanian) Graham and Caddo Creek Formations in Texas, North America. The family Neptunoceratidae was previously represented by a single genus, Tetrapleuroceras. This new material provides important emendations to the diagnostic concept of the enigmatic family including shell orientation, mature modification and siphuncular structure. Although higher taxonomic position of Neptunoceratidae is difficult to determine at present, morphologic similarities between the family and the orthoceratid (?) family Brachycycloceratidae are discussed.
How to translate text using browser tools
1 May 2011
Texanoceras, a New Neptunoceratid Cephalopod Genus from the Upper Pennsylvanian Graham and Caddo Creek Formations in North-Central Texas
Shuji Niko,
Royal H. Mapes
ACCESS THE FULL ARTICLE
Journal of Paleontology
Vol. 85 • No. 3
May 2011
Vol. 85 • No. 3
May 2011
Carboniferous
cephalopod
Pennsylvanian
Texanoceras
Texas