The Echinodermata are radially symmetric and exclusively marine, including starfish ( Asteroidea ), sea urchins, ( Echinoidea ), brittle stars ( Ophiuroidea ), feather stars ( Crinoidea ).
22.
In it she developed her scientific theory that the Phylum Chordata, including all vertebrates, was evolutionarily related to the apparently very different and very much more primitive Echinodermata, such as starfish.
23.
The Gulf of California is known for its high diversity and endemism of marine animal that can be found in this region is the sea urchin ( class echinoidea, in the phylum echinodermata ).
24.
The presence of a nerve net allows an organism belonging to the aforementioned phyla of Cnidaria, Ctenophora, and Echinodermata to have increased fitness as a result of being able to respond to their environment.
25.
A History of British Starfishes, and Other Animals of the Class Echinodermata " ( 1841 ) in his preface refers to Muller as the " one of the greatest living physiologists, Muller of Berlin ".
26.
This "'List of echinoderm orders "'concerns the various classes and orders into which taxonomists categorize the roughly 7000 extant species as well as the extinct species of the exclusively marine phylum Echinodermata.
27.
Parasitic infestations, stings, and bites in humans are caused by several groups of organisms belonging to the following phyla : Annelida, Arthropoda, Bryozoa, Chordata, Cnidaria, Cyanobacteria, Echinodermata, Nemathelminthes, Platyhelminthes, and Protozoa.
28.
A notable exception to the trend of cephalization throughout evolutionary advancement is phylum Echinodermata, which, although having a bilateral ancestor, as evidenced by their embryology, develop into a pentaradial animal with no concentrated neural ganglia or sensory head region.
29.
In 1852 was published the fourth and concluding volume of Forbes and S . Hanley's " History of British Mollusca "; also his " Monograph of the Echinodermata of the British Tertiaries " ( Palaeontographical Soc . ).
30.
The information in the last two articles is also in his contribution on " Cilia " to Robert Bentley Todd and William Bowman's " Cyclop�dia of Anatomy and Physiology " ( 1836 ); Sharpey also wrote the article " Echinodermata " in this work.
