Hypsocormus is an extinct genus of teleost fish from the 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...

 period of Europe.

Hypsocormus was a fast-swimming predatory fish about 1 metres (3.3 ft) long, with a half moon-shaped caudal fin similar to that of a modern mackerel

Mackerel

Mackerel is a common name applied to a number of different species of fish, mostly, but not exclusively, from the family Scombridae. They may be found in all tropical and temperate seas. Most live offshore in the oceanic environment but a few, like the Spanish mackerel , enter bays and can be...

. It had a single dorsal fin

Dorsal fin

A dorsal fin is a fin located on the backs of various unrelated marine and freshwater vertebrates, including most fishes, marine mammals , and the ichthyosaurs...

, elongated pectoral fins and tiny pelvic fins about half way down the body. An early teleost, Hypsocormus was still primitive, possessing primitive traits such as armored scales

Scale (zoology)

In most biological nomenclature, a scale is a small rigid plate that grows out of an animal's skin to provide protection. In lepidopteran species, scales are plates on the surface of the insect wing, and provide coloration...

. These were, however, small compared with those of earlier fish, allowing greater flexibility. Its jaws were muscular and highly developed, giving it a powerful bite.

It was first discovered by Suvajeet Duttagupta aka Pavlo, and classified by Ishani Pruthi.