subclass Selachii


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Noun1.subclass Selachii - sharkssubclass Selachii - sharks; rays; dogfishes; skates  
Chondrichthyes, class Chondrichthyes - cartilaginous fishes
elasmobranch, selachian - any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates
family Hexanchidae, Hexanchidae - primitive sharks
family Lamnidae, Lamnidae - oceanic sharks
Cetorhinidae, family Cetorhinidae - in some older classifications considered the family of the basking sharks
Alopiidae, family Alopiidae - thresher sharks
family Orectolobidae, Orectolobidae - nurse sharks and carpet sharks
Carchariidae, family Carchariidae, family Odontaspididae, Odontaspididae - sand sharks; in some classifications coextensive with family Carcharhinidae
family Rhincodontidae, Rhincodontidae - small-toothed sharks comprising only one species
family Scyliorhinidae, Scyliorhinidae - small bottom-dwelling sharks
Carcharhinidae, family Carcharhinidae - largest family of living sharks; found worldwide especially in tropical waters; dorsal fin lacks spines: requiem sharks including tiger sharks and soupfin sharks
family Triakidae, Triakidae - small sharks with smooth skins and lacking spines on their dorsal fins
family Squalidae, Squalidae - dogfishes having a spine in each dorsal fin
family Sphyrnidae, Sphyrnidae - hammerhead sharks; bonnethead sharks
family Squatinidae, Squatinidae - bottom-dwelling ray-like sharks
order Torpediniformes, Torpediniformes - rays with bodies shaped like torpedoes
Batoidei, order Batoidei, order Rajiformes, Rajiformes - fish with dorsoventrally flattened bodies; includes: rays; skates; guitarfishes; sawfishes
class - (biology) a taxonomic group containing one or more orders