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单词 aetosaur
释义

aetosaurn.

Brit. /ˈiːtəsɔː/, /eɪˈiːtəsɔː/, U.S. /ˈidəˌsɔr/, /eɪˈidəsɔr/
Forms: 1800s– aetosaur, 1900s aëtiosaur (irregular and rare), 1900s– aëtosaur.
Origin: A borrowing from Latin. Etymon: Latin Aëtosaurus.
Etymology: < scientific Latin Aëtosaurus, genus name (O. Fraas 1877, in Jahreshefte des Vereins f. Vaterl. Naturkunde Württemb. 33 iii. 12) < ancient Greek ἀετός eagle ( < the same Indo-European base as classical Latin avis bird (see aviary n.) + ancient Greek -ετός , suffix forming nouns) + scientific Latin -saurus -saur comb. form.The occasional form aëtiosaur probably represents a misprint (perhaps additionally influenced by association with aetio- in aetiology n. and related words) for aëtosaur; compare scientific Latin (rare) Aëtiosaurus (1899 or earlier), which shows a similar error.
Palaeontology.
Any reptile of the extinct order (or suborder) Aetosauria, known from fossil remains of the Triassic period, and comprising herbivorous diapsids that resembled heavily armoured crocodiles.
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aetosaur1893
1893 I. K. Funk et al. Standard Dict. Eng. Lang. I. at Aetosauria Aetosaur.
1904 Amer. Jrnl. Sci. 167 382 In the Aëtiosaur [sic] (Stegomus longipes)..we find a form whose stilted limbs and comparatively narrow body give it just the proportions one would suppose Batrachopus to have.
1974 Nature 8 Mar. 168/2 The thecodontian hand, known in phytosaurs, aetosaurs, [etc.]..was crocodile-like with five long digits.
1985 D. Norman Illustr. Encycl. Dinosaurs 186/2 In the early part of the late Triassic the first dinosaurs had caused the extinction of all the herbivorous mammal-like reptiles and a few other aberrant groups of herbivorous reptiles (e.g. rhynchosaurs and aëtosaurs).
2008 Nature 31 Jan. 510 (caption) The aetosaur, which lived more than 200 million years ago, was a reptile related to crocodiles and dinosaurs.
This entry has been updated (OED Third Edition, December 2011; most recently modified version published online December 2021).
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n.1893
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