protorosaurn.

Brit.

/ˈprəʊt(ə)rə(ʊ)sɔː/, U.S.

/ˈproʊdərəˌsɔr/

Forms: 1800s– proterosaur, 1800s– protorosaur.

Origin: A borrowing from Latin. Etymons: Latin Protorosaurus, Proterosaurus.

Etymology: < scientific Latin Protorosaurus (or Proterosaurus) Protorosaurus n.: see -saur comb. form. Compare earlier Protorosaurus n.

Palaeontology.

An early fossil reptile of the genus Protorosaurus or the order Protorosauria (now often called Araeoscelidia). Cf. Protorosaurus n.

ΚΠ

1863 J. D. Dana Man. Geol. 346 They stand apart from other Lacertians, and are intermediate between them and the Crocodilians. Such are the Thecodontosaur, Palæosaur, and Proterosaur.

1879 A. Winchell Syllabus Course Lect. Gen. Geol. 30 Lacertilians... 1. Rhynchocephals... 2. Homœosaurs... 3. Protorosaurs.

1940 Copeia ii. 120 The protorosaurs were evolving in a direction quite different and apparently had nothing to do with lizard ancestry.

1967 Evolution 21 832/1 His ‘Theromorpha’..consists of a combination of the two usual subclasses, Synapsida..with the Euryapsida (proterosaurs, sauropterygians, and placodonts).

2001 S. G. Lucas Chinese Fossil Vertebr. viii. 132 ‘Dianosaurus’.., long considered a possible protorosaur, is known only from a skull missing everything anterior to the orbits.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	protorosaur
释义	protorosaurn. Brit. /ˈprəʊt(ə)rə(ʊ)sɔː/, U.S. /ˈproʊdərəˌsɔr/ Forms: 1800s– proterosaur, 1800s– protorosaur. Origin: A borrowing from Latin. Etymons: Latin Protorosaurus, Proterosaurus. Etymology: < scientific Latin Protorosaurus (or Proterosaurus) Protorosaurus n.: see -saur comb. form. Compare earlier Protorosaurus n. Palaeontology. An early fossil reptile of the genus Protorosaurus or the order Protorosauria (now often called Araeoscelidia). Cf. Protorosaurus n. ΚΠ 1863 J. D. Dana Man. Geol. 346 They stand apart from other Lacertians, and are intermediate between them and the Crocodilians. Such are the Thecodontosaur, Palæosaur, and Proterosaur. 1879 A. Winchell Syllabus Course Lect. Gen. Geol. 30 Lacertilians... 1. Rhynchocephals... 2. Homœosaurs... 3. Protorosaurs. 1940 Copeia ii. 120 The protorosaurs were evolving in a direction quite different and apparently had nothing to do with lizard ancestry. 1967 Evolution 21 832/1 His ‘Theromorpha’..consists of a combination of the two usual subclasses, Synapsida..with the Euryapsida (proterosaurs, sauropterygians, and placodonts). 2001 S. G. Lucas Chinese Fossil Vertebr. viii. 132 ‘Dianosaurus’.., long considered a possible protorosaur, is known only from a skull missing everything anterior to the orbits. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1863
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