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About: Ischyrhiza     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : dbo:Species, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: ThingEukaryoteAnimalFishanimaleukaryotefishspecies New Facet based on Instances of this Class

Ischyrhiza is an extinct genus of sclerorhynchoid ray from the Late Cretaceous and Early Paleogene. It had a large, toothed rostrum closely resembling that of a modern-day sawfish. Despite formerly being classified within a family of extinct sawfish-like rays known as Sclerorhynchidae, phylogenetic analyses indicate that Ischyrhiza, Schizorhiza, and Onchopristis form a distinct clade that groups closer with the extant family Rajidae, which contains the true skates, possibly rendering the suborder Sclerorhynchoidei paraphyletic.