Beleutoceras
Beleutoceras is a genus belonging to the Nomismoceratidae family. 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 accessed on 10/01/07

Goniatitida genera
Nomismocerataceae
Carboniferous ammonites
Fossils of Kazakhstan