#nephriticeratidae
Nephriticeratidae
Extinct family of nautiloids
The Nephriticeratidae is a family of early Paleozoic nautilod cephalopods included in the Barrandeocerina, distinguished by mostly cyrtoconic as well as gyroconic, sepenticontic, and sinstrally torticonic shells with large, typically straight necked (orthchoanitic) siphuncles. As for the suborder, connecting rings are thin.
Sat 31st
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