Squalomorphi
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Squalomorphi is a superorder of sharks, generally characterized by lacking traits such as an anal fin, nictitating membrane, or suborbital shelves in the cranium. Squalomorphs are also called squalea,
Spiny dogfish
Squatiniformes
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Squatiniformes is an order of sharks belonging to Squalomorphi. It contains only a single living genus Squatina, commonly known as angelsharks. The oldest genus of the order, Pseudorhina is known from
Squalomorphi
…There are about 163 living species in 11 families. Squalean sharks are divided into six orders: Echinorhiniformes, Hexanchiformes, Squaliformes, Squatiniformes, Pristiophoriformes and the extinct Protospinaciformes. The order Hexanchiformes is a very small and primitive order consisting of cow sharks and frilled…
Squatina dumeril SI
Naturkundemuseum Engelhai Pseudorhina sp.17RM1984