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Niobrarateuthis walkeri, a New Species of Teuthid from the Upper Cretaceous Niobrara Formation of Kansas
Richard G. Green
Journal of Paleontology
Vol. 51, No. 5 (Sep., 1977), pp. 992-995
Published by: SEPM Society for Sedimentary Geology
Stable URL: http://www.jstor.org/stable/1303772
Page Count: 4
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Niobrarateuthis walkeri, a new species of kelaenid squid, differs substantially from European kelaenids described by Naef (1922) and from the North American kelaenid, N. bonneri which was also recovered from the Niobrara Formation. The new species consists of an extended anterior spike-like rhachis and a greatly enlarged ventrally open posterior conus. Niobrarateuthis walkeri n. sp. inhabited the Niobrara Sea during late Coniacian to early Santonian time and was recovered from the basal Smoky Hill Chalk.
Journal of Paleontology © 1977 SEPM Society for Sedimentary Geology