3.3.6 Gonorhynchiformes

3.3.6 Gonorhynchiformes

Orbitosphenoid absent.

Parietal is small.

Teeth absent in fifth ceratobranchial.

First three vertebrae is specialised and associated with one or more cephalic ribs.

Suprabrachcial organ is present.

Teeth absent.

Five to seven hypural plates.

This order has close affinity with clupeiformes.

There are four families seven genera and nearly 35 species are present in this order.

Last modified: Monday, 12 March 2012, 10:47 AM