Welleritidae is one of five families of the Schistoceratoidea superfamily. They are an extinct group of ammonoids, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids.
Subfamilies Axinolobinae Axinolobus Paraphaneroceras Welleritinae Aqishanoceras Eowellerites Faqingoceras Wellerites Winslowoceras
References The Paleobiology Database accessed on 10/01/07