Their bodies were different to other sharks of the time, but were perhaps perfectly adapted to speed through waters after prey. The Cladoselache was a genus shark species, known for their ...

Around 40 to 50 different shark species live permanently in or regularly visit the ... But throughout Earth’s oceans, viviparity occurs in a variety of forms. Whale sharks, Rhincodon typus, are the ...

Today, sharks are classified among the elasmobranchs, which also includes the rays and skates. Number of species: There are well over 350 known species of sharks, and new species are described ...