411 REFERENCE · Wiktionary
Pentecopterus
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Translingual
thumb|200px|Pentecopterus relative (Eurypterus genus)
Etymology
From mul grc πεντηκόντερος fifty-oared, an ancient Greek warship, due to similarities in shape and predatory behavior.
Proper noun
†1 m
genus family Megalograptidae extinct genus of sea scorpion that lived during the Ordovician period from 2015
Hypernyms
genus Eurypterida class - order, Megalograptoidea superfamily - superfamily; †Megalograptidae family - family
Hyponyms
genus Pentecopterus decorahensis species
References
1
1
1
18947 Eurypterida
Further reading