How many letters does the top answer for “an extinct genus of reptiles of the permian period. called also protosaurus.” have?

The most common answer is proterosaurus (13 letters).

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Crossword clue: an extinct genus of reptiles of the permian period. called also protosaurus.

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

proterosaurus 13 letters web-def

An extinct genus of reptiles of the Permian period. Called also Protosaurus.

Pattern

Data: SCOWL, igerman98, RLA-ES, Grammalecte, br.ispell · frequency: OpenSubtitles (see Data & licenses)