Protorosaurus

proh-toh-roh-SORE-us /ˌproʊtoʊroʊˈsɔːrəs/

Accepted genus

first lizard (approximately)

  • proto- · Greek · first, early
  • -saurus · Greek · lizard

The name is built from Greek roots meaning roughly "first lizard" or "early lizard". It was given to a long-necked reptile from the Late Permian Kupferschiefer of Germany, one of the earliest fossil reptiles to be scientifically described. The type species is Protorosaurus speneri.

Named by
Meyer
Year named
1832
Period
Late Permian
Stage
Wuchiapingian
Found in
Kupferschiefer, Germany (also the Marl Slate of England)

Not a dinosaur. Protorosaurus is a long-necked archosauromorph reptile (a protorosaur) that lived about 250 million years before the first birds. It predates the dinosaurs. The spelling "Proterosaurus" also appears in older literature, and I'm not certain of the exact details of the original spelling and the etymology. I included the genus because it is a published genus name, but it falls outside dinosaurs proper.