Galeomorphii
| Galeomorphi Temporal range: Jurassic–Recent |
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| Great white shark | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Superorder: | Galeomorphi |
| Orders | |
Galeomorphii is a superorder of cartilaginous fishes which includes all modern sharks except the dogfish and its relatives. They are sometimes called galea or galean sharks. There are about 300 living species in 23 families. Galean sharks are divided into four orders: the Heterodontiformes, Orectolobiformes, Lamniformes, and Carcharhiniformes
The bullhead sharks are a small order of basal modern sharks (Neoselachii). All are relatively small, with the largest species being just 150 centimetres (59 in) in adult length. They are bottom feeders in tropical and subtropical waters. They appear in the fossil record in the Early Jurassic, well before any of the other galean sharks. However, they have never been common, and it is likely their origin lies even further back.
There are nine living species in a single genus, Heterodontus and a single family.
Carpet sharks are another small order of sharks, so called because many members have ornate patterns reminiscent of carpets. Sometimes the term "carpet shark" is used interchangeably with wobbegong, which are a subgroup of the order. Carpet sharks have two dorsal fins, without spines, and a small mouth that is forward of the eyes. Many have barbels and small gill slits, with the fifth slit overlapping the fourth. The upper lobe of the caudal fin tends to be mostly in line with the body, while the lower lobe is poorly developed.
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Wikipedia