Xenoporadoceratinae is one of two subfamilies of the Sporadoceratidae family, a member of the Goniatitida order. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids.

References

• The Paleobiology Database Archived 2007-10-01 at the Wayback Machine accessed on 10/01/07

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