| 释义 |
Definition of Scleractinia in English: Scleractiniaplural nounˌsklɛrakˈtɪnɪəˌsklirakˈtinēə Zoology An order of coelenterates that comprises the stony corals. Also called Madreporaria Example sentencesExamples - Interestingly, the dominant modern coral group, the Scleractinia, took off at about the same time the dinoflagellates did.
- There is an emerging consensus that order Actiniaria (sea anemones) forms a monophyletic sister group to a clade comprising orders Scleractinia, Corallimorpharia, and Antipatharia, each of which appears to be monophyletic.
- Molecular studies also indicate that extant Scleractinia and anemones probably have a common Paleozoic origin; i.e., these groups probably split in the late Paleozoic.
- These include some Foraminiferida, Hydrozoa and Scleractinia, Bryozoa, Brachiopoda, Pelecypoda, Polychaeta, and Cirripedia.
- During the early Mesozoic the Scleractinia steadily increased in numbers, diversity, and distribution culminating in extensive reef development in the Late Jurassic.
Derivatives noun & adjective Zoology They discuss the scleractinian skeleton in detail, covering, in their words, its morphology, mineralogy, growth, and chemistry. Example sentencesExamples - For example, fragmentation in scleractinian corals can reduce fecundity in polyps surrounding the damaged region or even entire coral colonies, by an unknown mechanism.
- Changes in biomineralization styles that occur in skeletal ontogeny provide important clues about possible constraints on microstructural evolution of the scleractinian skeleton.
- Modern scleractinian corals appear, and in the equatorial Tethyean regions form small patch reefs no more than a meter high and often build on the decaying remains of sponge reefs.
- In any case, most if not all Triassic scleractinians, whether zooxanthellate or not, show skeletal construction different from modern (strictly post-Cretaceous) equivalents.
Origin Modern Latin (plural), from Greek sklēros 'hard' + aktis, aktin- 'ray'. Definition of Scleractinia in US English: Scleractiniaplural nounˌsklirakˈtinēə Zoology An order of coelenterates that comprises the stony corals. Also called Madreporaria Example sentencesExamples - There is an emerging consensus that order Actiniaria (sea anemones) forms a monophyletic sister group to a clade comprising orders Scleractinia, Corallimorpharia, and Antipatharia, each of which appears to be monophyletic.
- Molecular studies also indicate that extant Scleractinia and anemones probably have a common Paleozoic origin; i.e., these groups probably split in the late Paleozoic.
- These include some Foraminiferida, Hydrozoa and Scleractinia, Bryozoa, Brachiopoda, Pelecypoda, Polychaeta, and Cirripedia.
- Interestingly, the dominant modern coral group, the Scleractinia, took off at about the same time the dinoflagellates did.
- During the early Mesozoic the Scleractinia steadily increased in numbers, diversity, and distribution culminating in extensive reef development in the Late Jurassic.
Origin Modern Latin (plural), from Greek sklēros ‘hard’ + aktis, aktin- ‘ray’. |