| Home> Plates
 

Petrushevskaya 1967


Fig. 67
Pterocorys hirundo Haeckel:
I - specimen in which only two segments of shell are formed, from sediment of station 220; II - specimen in which third segment has begun to form, frorn sediment of station 17; III - specimen from sediment of station 220; IV - highly burnished skeleton from sediment of station 293; V - specimen from sediment of the Pacific Ocean off the coast of California.