On one, the Comatula, when it is full grown, the crinoid leaves its stalk, and lives a free, roving life after the fashion of many starfishes.
Examine the crinoid as closely as one may, it still resembles a stone lily, and only its slow movements, contracting and folding, suggest life.
Near by we find a flowerlike or budlike form (Fig 45), which may well serve as the flower of this stem, and so we add it and produce a striking resemblance to the crinoid shown in Figure 46.
Buckland has calculated that in a crinoid similar to that in Fig.
The transverse ciliated rings of the Holothurian and Crinoid larvae are of no importance in the comparison between the trochosphere larvae and the larvae of Echinodermata, since such rings are frequently secondarily developed.
Antedon, the onlyCrinoid so far studied (Goette, No.
A crinoid of the genus Antedon and related genera.
Surrounding the open mouth of the cup is a circle of long, jointed, much-branched tentacles that sweep the water, capture passing prey, and bring it into the mouth of the crinoid within the circling base of the arms.
Crinoid from the Upper Silurian of New Brunswick, injected with the hydrous silicate already referred to, and fig.
One of the plates from which the arms of a crinoid arise.
Any one of the segments of an arm of a crinoid composed of two joints so closely united that the line of union is obliterated on the outer, though visible on the inner, side.
Defn: A fossil crinoid of the genus Marsupites, resembling a purse in form.
Defn: One of the plates from which the arms of a crinoid arise.
Few of us will probably ever have an opportunity of studying a crinoid alive, although in our museums we may see them preserved in glass jars.
Few of us, unless we had studies about these creatures, could distinguish between a crinoid and one of the frisky little dancing stars, or serpent stars, which are so common in the rocky caves along our coast.
The crinoidtype was differentiated by the extension of the food-grooves and associated organs along radial outgrowths from the theca itself.
This crinoid has only two circlets of plates in the cup, but the cup analysed in the adjoining diagram has in addition infrabasals and a centrale C.
This, which may be called the calycinal theory, will be appreciated by comparing the structure of a simple crinoid with that of some other types.
The modern Crinoid without stem, or the Comatula, though agreeing with the ancient in all the essential elements of structure, differs from it in some specific features.
The ab-oral region in the Crinoid rises to form a sort of cup-like or calyx-like projection.
A segment of a crinoid animal, which seemed to have been a first costal joint of a pentacrinus of Parkinson, occurred near the same place.
An imperfect body of a crinoid animal, encrinite of authors; the fragment is about one-half of the inferior portion of the body, from which the following description is made out, taking into view the whole circumference.
Ossiculae of the body of a crinoid animal of the analogous species to No.
Godlewski used the same method for the hybridisation of the sea-urchin eggs with the sperm of a crinoid (Antedon rosacea).
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "crinoid" in a variety of sentences. We hope that you will now be able to make sentences using this word.
