protorosaur
noun
pro·to·ro·saur
| \ ˈprōtərəˌsȯ(ə)r\
variants:
or protorosaurian \ ˌ⸗⸗⸗ˈsȯrēən \
or less commonly proterosaur \ ˈ⸗⸗⸗ˌsȯ(ə)r \
plural -s
Definition of protorosaur
: a reptile or fossil of the order Protorosauria
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