Crossword-Solution: ECHINOIDEA
Dictionary
| Word | Word Type | Definition |
|---|---|---|
| Echinoidea | n. pl. | The class Echinodermata which includes the sea urchins. They have a calcareous, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See Spatangoid, Clypeastroid. |
We have 1 clue for the answer “ECHINOIDEA”
| Clue | Answers |
|---|---|
| ECHINOID | 1 answer |
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Poet’s word, with inverted comma, for the end of the day
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E
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E
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N
Hint 1 meaning
The old plural of Eye.
Hint 2 anagram
NEE
Hint 3 another clue
AND STILL ___
28 +1
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Sentences with ECHINOIDEA (5)
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.
The group includes the following classes: Crinoidea, Asterioidea, Ophiuroidea, Echinoidea, and Holothurioidea.
See Paleo-, and Echinoidea.] (Zoöl.) Defn: An extinct order of sea urchins found in the Paleozoic rocks.
First, a comparison of the relative numbers of the representatives of the various classes at different epochs; according to this they may be placed in the following order, with the oldest first: Cystidea, Crinoidea, Blastoidea, Asteroidea, Ophiuroidea, Echinoidea.
The evolution of the modern Echinoidea from their Palaeozoic ancestors is also well understood, but in this case the ancestral form to which the palaeontologist is led does not at first sight present many resemblances to the Pelmatozoa.