| 释义 |
Definition of echinoid in English: echinoidnoun ˈɛkɪnɔɪdiˈkīˌnoid Zoology An echinoderm of the class Echinoidea; a sea urchin. Example sentencesExamples - Terebratulid / echinoid reef mounds provided a buffer from the strong waves of the open ocean, which prevented disarticulation of many whole specimens.
- The coarser fraction of chalk consists mainly of the skeletal debris of foraminifera, calcispheres, bivalve fragments, echinoid plates, and bryozoan, ostracod, and coral debris.
- Fossils include foraminiferans, brachiopods, echinoids, pelecypods, cephalopods, shark teeth, fish vertebrae, as well as asteroids, gastropods, a pterosaur, a nodosaurid, and decapods.
- Sponges are preyed upon by gastropods, polychaetes, asteroids, echinoids, turtles, and fishes.
- We have interpreted it as a synapomorphy for asteroids, ophiuroids, echinoids, and holothuroids, to the exclusion of the crinoids.
adjective ˈɛkɪnɔɪdiˈkīˌnoid Zoology Relating to or denoting echinoids. Example sentencesExamples - Seven horizons of echinoid aggregations, totaling approximately 3 % of the channel thickness, occur in the black shale.
- Despite the astonishing abundance of echinoid spines in the coral reef horizon, echinoid tests were not found here.
- In the echinoid gene order, the tRNA gene cluster follows the putative control region.
- This implies that the ancestral polarity of the 4.6-kb inversion is the echinoid pattern.
- The gastropod assemblage suggests an Albian age and the echinoid assemblage reportedly indicates a late Albian age.
Definition of echinoid in US English: echinoidnouniˈkīˌnoid Zoology An echinoderm of the class Echinoidea; a sea urchin. Example sentencesExamples - Fossils include foraminiferans, brachiopods, echinoids, pelecypods, cephalopods, shark teeth, fish vertebrae, as well as asteroids, gastropods, a pterosaur, a nodosaurid, and decapods.
- The coarser fraction of chalk consists mainly of the skeletal debris of foraminifera, calcispheres, bivalve fragments, echinoid plates, and bryozoan, ostracod, and coral debris.
- Terebratulid / echinoid reef mounds provided a buffer from the strong waves of the open ocean, which prevented disarticulation of many whole specimens.
- Sponges are preyed upon by gastropods, polychaetes, asteroids, echinoids, turtles, and fishes.
- We have interpreted it as a synapomorphy for asteroids, ophiuroids, echinoids, and holothuroids, to the exclusion of the crinoids.
adjectiveiˈkīˌnoid Zoology Relating to or denoting echinoids. Example sentencesExamples - In the echinoid gene order, the tRNA gene cluster follows the putative control region.
- Seven horizons of echinoid aggregations, totaling approximately 3 % of the channel thickness, occur in the black shale.
- Despite the astonishing abundance of echinoid spines in the coral reef horizon, echinoid tests were not found here.
- This implies that the ancestral polarity of the 4.6-kb inversion is the echinoid pattern.
- The gastropod assemblage suggests an Albian age and the echinoid assemblage reportedly indicates a late Albian age.
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