Macrourogaleus
Encyclopedia
Macrourogaleus is a shark-like fish from the late Jurassic
Jurassic
The Jurassic is a geologic period and system that extends from about Mya to  Mya, that is, from the end of the Triassic to the beginning of the Cretaceous. The Jurassic constitutes the middle period of the Mesozoic era, also known as the age of reptiles. The start of the period is marked by...

. This type of shark is said to be the first shark on earth. Little is known about Macrourogaleus.
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