| 单词 |
anapsid |
| 释义 |
anapsid, a. and n. Zool.|æˈnæpsɪd|
[ad. mod.L. Anapsida (S. W. Williston 1917, in Jrnl. Geol. XXV. 419), f. an- + Gr. ἁψίς, ἁψιδ- arch: see -id3.]
A. adj. Of or pertaining to the reptilian subclass Anapsida, which comprises turtles, tortoises, and extinct groups all characterized by a skull with no temporal openings; having or being such a skull.
B. n. A reptile of the subclass Anapsida. Cf. diapsid a., synapsid a. and n.
1933A. S. Romer Vertebr. Paleont. vi. 128 Truly primitive forms must have possessed a completely roofed skull like that of their amphibian ancestors, and for this condition the term ‘anapsid’ was coined. 1956― Osteol. Reptiles ii. 473 The Chelonia are considered as true anapsids. 1969A. Bellairs Life of Reptiles I. ii. 25 (caption) Cross-section through reptilian skull behind orbits showing anapsid condition. 1971E. C. Olson Vertebrate Paleozool. iii. viii. 305 This classification associated many reptiles that are now placed in separate categories and did not entirely follow its own criteria (e.g., placing anapsids as synapsids). 1982I. F. Spellerberg Biol. Reptiles i. 7 (caption) Examples of extinct anapsid reptiles. |
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