Echinodermata

'Echinodermata'; out of all the orders of the 'Coelenterata' and

Lectures and Essays Thomas Henry Huxley 1860

Despite their resemblance to flowers, crinoids are animals, belonging to the Echinodermata, to which starfish also belong.

Catch that crinoid! 2005

Despite their resemblance to flowers, crinoids are animals, belonging to the Echinodermata, to which starfish also belong.

2005 October - Telic Thoughts 2005

These lowly animals belong to that group of the star-fish class (Echinodermata), the species of which possess generally spheroidal bodies, built up of multitudinous calcareous plates, and constitute the order Echinoidea.

On the Genesis of Species St. George Mivart

A similar detailed study, under similar requirements, of animals, representing various classes and orders of Echinodermata, Mollusca, Annulata and Arthropoda.

University of Virginia Record 1914

A similar detailed study, under similar requirements, of animals, representing various classes and orders of Echinodermata, Mollusca, Annulata and Arthropoda.

University of Virginia Record 1913

Mivart adduces this case, chiefly on account of the supposed difficulty of organs, namely the avicularia of the Polyzoa and the pedicellariæ of the Echinodermata, which he considers as “essentially similar, ” having been developed through natural selection in widely distinct divisions of the animal kingdom.

VII. Miscellaneous Objections to the Theory of Natural Selection 1909

The Echinodermata (star-fishes, sea-urchins, &c.) are furnished with remarkable organs, called pedicellariæ, which consist, when well developed, of a tridactyle forceps—that is, of one formed of three serrated arms, neatly fitting together and placed on the summit of a flexible stem, moved by muscles.

VII. Miscellaneous Objections to the Theory of Natural Selection 1909

All possible gradations, as he adds, may likewise be found between the pedicellariae of the star-fishes and the hooks of the ophiurians, another group of Echinodermata; and again between the pedicellariae of sea-urchins and the anchors of the Holothuriæ, also belonging to the same great class.

VII. Miscellaneous Objections to the Theory of Natural Selection 1909

The marine inhabitants of the eastern and western shores of South America are very distinct, with extremely few shells, Crustacea, or Echinodermata in common; but Dr. Gunther has recently shown that about thirty per cent. of the fishes are the same on the opposite sides of the isthmus of Panama; and this fact has led naturalists to believe that the isthmus was formerly open.

XII. Geographical Distribution. Present Distribution Cannot Be Accounted for by Differences in Physical Conditions 1909