Echinoderms |
Contents
Figures | 9 |
Prefaces | 11 |
Introduction and general features | 15 |
Copyright | |
17 other sections not shown
Common terms and phrases
aboral surface adambulacrals adaptive radiation adult ambulacral grooves ambulacral plates ambulacrum ampulla animal Antedon anus appear arrangement asteroids blastoids body wall brachioles burrowing calcite Cambrian cavity cells chordate ciliated circum-oral classes close coelomic coelomic fluid columns crinoids crinozoans cystoids dichopores DIEGO LIBRARY dipleurula disk dorsal echinoderms echinoids edrioasteroids eocrinoids epithelium ERSITY evolution feeding arm five food grooves forms fossil record function glands gonads groups haemal ring haemal system hemichordates holothuroids homalozoan hydrocoel hydropore hydrospire larva later madreporite muscles nerve ring ophiuroids oral surface Ordovician ossicles pair papillae papulae pectinirhomb pedicellariae pentamerous phanerozone phyletic phylum pinnules plexus primitive probably radial water respiratory round the mouth SAN DIEGO sensory side similar skeletal skeleton somasteroid spatangoids spicules spines starfish stem structure substratum suckered sutural pores tegmen theca thecal plates tissue tube-feet tube-foot tubular coelomic typical UNIV UNIVERSITY urchin vestibule virgalia water vascular canal water vascular system