In 1866 the Russian embryologist Kowalewsky startled the zoological world with a minute account of the developmental changes of Ascidia, one of the Tunicata, 5 and it became evident that the affinities of that class were with the Vertebrata, whilst their structural agreements with Mollusca were only superficial.
Kowalewsky, " Entwickelungsgeschichte der einfachen Ascidien," in Mtn.
Kowalewsky and A.
- Scaphopoda feed on the lowest marine organisms such After Kowalewsky, in Lanas Diatoms, Protozoa, &c. There are 150 's Treatise on Zoology, living and about 275 known fossil species.
Kowalewsky, "Etude sur l'embryogenie du Dentale," Ann.