Definitions from Wiktionary (proostracum)
▸ noun: (paleontology) The anterior prolongation of the guard of the phragmocone of belemnites and allied fossil cephalopods, whether horny or calcareous.
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▸ noun: (paleontology) The anterior prolongation of the guard of the phragmocone of belemnites and allied fossil cephalopods, whether horny or calcareous.
Similar:
procerite,
prophragma,
prostomium,
prostonium,
epistoma,
profurcasternum,
periostracum,
praecoxa,
propleurum,
phragmocone,
more...
Opposite:
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▸ Wikipedia articles (New!)
▸ Popular adjectives describing proostracum
▸ Words that often appear near proostracum
▸ Rhymes of proostracum
▸ Invented words related to proostracum