Part I., containing the Radiata and Articulata, is now ready.
It will be noticed that he separates the Radiata (Radiaires) from the Polypes.
The line representative of the Radiata ought perhaps to have been elevated a little higher than either of its two neighbors.
Thus, in the great division of Radiata, we find asteriod and helianthoid zoophytes, besides crinoid and cystidean echinoderms.
These (p. 290) four great branches of the animal world are the vertebrata, mollusca, articulata, and Radiata.
The lower type of animals, the Radiata, is almost exclusively marine.
Cuvier included them in his Radiata, a class comprising all the animals whose parts diverge or radiate from a central axis.
Thus, in the great division of the Radiata, we find asteroid and helianthoid zoophytes, besides crinoid and cystidean echinoderms.
The same form, or a modification of it, was described by Haworth as Radiata, from a Yorkshire specimen.
Among the Radiata of this epoch, the order Crinoidea are abundantly represented.