Echinodermata, Volume 3 |
From inside the book
Results 1-3 of 25
Page U-239
... adapically just above the primary tubercle ; in the adradial tract two such rows appear , one adapical and one adoral in position , and related to each other en échelon ( Fig . 183,1 ) . In some Holectypoida both interradial and ...
... adapically just above the primary tubercle ; in the adradial tract two such rows appear , one adapical and one adoral in position , and related to each other en échelon ( Fig . 183,1 ) . In some Holectypoida both interradial and ...
Page U-240
... adapical parts of the inter- ambulacra bear a few enlarged adradially placed tubercles surrounded by smaller ones . The bilateral symmetry in this group is accompanied by a differentiation of the ornament of the adapical and adoral sur ...
... adapical parts of the inter- ambulacra bear a few enlarged adradially placed tubercles surrounded by smaller ones . The bilateral symmetry in this group is accompanied by a differentiation of the ornament of the adapical and adoral sur ...
Page U-253
... adapical . Toward apical system . adapical suture . Suture along apical side of coronal plate . adoral . Toward mouth . adoral suture . Suture along side of coronal plate nearest mouth . adradial . Position corresponding to boundary be ...
... adapical . Toward apical system . adapical suture . Suture along apical side of coronal plate . adoral . Toward mouth . adoral suture . Suture along side of coronal plate nearest mouth . adradial . Position corresponding to boundary be ...
Other editions - View all
Common terms and phrases
aboral side aboral surface adambulacrals adapical adoral adradial AGASSIZ amb plates ambula ambulacral ambulacral groove ambulacral plates ambulacrum anus apical system arms Asterias Asteroidea asteroids asterozoans bilateral symmetry buccal Cidaris cidaroid columns cral Cyclocystoides Diadematacea distal DÖDERLEIN dorsal DURHAM & MELVILLE Echino echinoderms Echinoidea echinoids Echinozoa edrioasteroids Family fasciole FISHER floor plates forms fossil genera genital plates genus gonopore groups H. L. CLARK Helicoplacoidea Helicoplacus holothurians ICZN imbricating inferomarginals interambulacral plates interradial KOEHLER lantern lateral LYMAN madreporite marginal MORTENSEN mouth-angle plates muscles oculars oids ophiocistioids Ophiuroidea ophiuroids oral side oral surface Ordovician ossicles Paleozoic pedicellariae periproct peristome perradial PERRIER podia pore pairs posterior primary spines primary tubercles radial rays REGNÉLL regular echinoids rows skeleton SLADEN spatangoids species SPENCER Subfamily submarginal plates suborder superomarginals suture text-fig theca tion tube feet tube foot tubercles U.Cret U.Ord ventral VERRILL