411 REFERENCE · Wiktionary
Heterostraci
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Translingual
Etymology
From mul hetero- different from mul grc ἕτερος ostracī la ostracum/ostracon genitive noun of differing ostraca.
Proper noun
†
subclass class Pteraspidomorphi class extinct pteraspidomorph jawless vertebrates that lived primarily in marine and estuary environments
See also
Q2309785 1
mul Fish