trezor.io
Rate this file (Rating : 5 / 5 with 1 votes)
animal photography
trezor.io

Animal Photography

All this suggests the deuterostomes and protostomes are separate, monophyletic lineages. The main phyla of deuterostomes are the Echinodermata and Chordata. The former are radially symmetric and exclusively marine, such as starfish, sea urchins, and sea cucumbers. The latter are dominated by the vertebrates, animals with backbones. These include fish, amphibians, reptiles, birds, and mammals.
In addition to these, the deuterostomes also include the Hemichordata, or acorn worms. Although they are not especially prominent today, the important fossil graptolites may belong to this group.
The Chaetognatha or arrow worms may also be deuterostomes, but more recent studies suggest protostome affinities.

File information
Filename:588273.jpg
Album name:Fauna & Flora
Rating (1 votes):55555
Keywords:#animal #photography
Filesize:66 KiB
Date added:Oct 16, 2013
Dimensions:615 x 700 pixels
Displayed:119 times
URL:displayimage.php?pid=588273
Favorites:Add to Favorites