| 释义 |
Definition of anapsid in English: anapsidnounəˈnapsɪdəˈnapsəd Zoology A reptile of a group characterized by a lack of temporal openings in the skull, including the turtles and their relatives and many early fossil forms. Sometimes placed in a subclass Anapsida, though this taxon is now often not recognized Example sentencesExamples - All members of the group called the Reptilia, except for the anapsids (turtles and their ilk), and a few extinct groups, are diapsids.
- The relationships of more basal anapsids are not firmly established, but millerettids apparently appeared first.
- Today, only one group of anapsids remains (Chelonia - the turtles), which truly could be called an evolutionary success story.
- If anything, the synapsids seem more closely related to anapsids than diapsids.
- Therefore, a long hiatus exists in the fossil record of anapsids.
Origin 1930s: from modern Latin Anapsida, from Greek an- 'without' + apsis, apsid- 'arch'. Definition of anapsid in US English: anapsidnounəˈnapsəd Zoology A reptile of a group characterized by the lack of temporal openings in the skull, including the turtles and their relatives. Sometimes placed in a subclass Anapsida, though this taxon is now often not recognized Example sentencesExamples - Therefore, a long hiatus exists in the fossil record of anapsids.
- The relationships of more basal anapsids are not firmly established, but millerettids apparently appeared first.
- Today, only one group of anapsids remains (Chelonia - the turtles), which truly could be called an evolutionary success story.
- All members of the group called the Reptilia, except for the anapsids (turtles and their ilk), and a few extinct groups, are diapsids.
- If anything, the synapsids seem more closely related to anapsids than diapsids.
Origin 1930s: from modern Latin Anapsida, from Greek an- ‘without’ + apsis, apsid- ‘arch’. |