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Webster 1913 Edition

Thoracostraca

‖

Thoˊra-cos′tra-ca

,
Noun.
pl.
[NL. See
Thorax
, and
Ostracoid
,
Adj.
]
(Zool.)
An extensive division of Crustacea, having a dorsal shield or carapec[GREEK] [GREEK][GREEK]niting all, or nearly all, of the thoracic somites to the head. It includes the crabs, lobsters, shrimps, and similar species.

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