Asterole'pis

Asterole'pis, a name given to what appears to have been the largest fish that lived in old red sandstone times in the European area. Its remains have been met with in Scotland and Russia. It was covered with a strong bony armour, embossed with star-like tubercles—hence the name (Gr. astēr, 'a star'; lepis, 'a scale'). Its cuirass-like cephalic shield reached a length of 20 and a breadth of 16 inches. Asterolepis is supposed to have been from 20 to 30 feet long.