TETRABRANCHIATE Definition & Meaning

tetrabranchiate

[te-truh-brang-kee-it, -eyt]

Phonetic (Standard)IPA

adjective

belonging or pertaining to the Nautiloidea (Tetrabranchiata), a subclass or order of cephalopods with four gills, including the pearly nautilus and numerous fossil forms.

tetrabranchiate

adjective

of, relating to, or belonging to the Tetrabranchiata, a former order of cephalopod molluscs having four gills and including the pearly nautilus

noun

any mollusc belonging to the Tetrabranchiata

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51�Թ� History and Origins

Origin of tetrabranchiate¹

First recorded in 1825–35; tetra- + branchiate

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Example Sentences

Examples have not been reviewed.

Tetrabranchiate, tet-ra-brang′ki-āt, adj. having four gills.—n.pl.

From

Sī′phonostome, a siphonostomatous animal, as a fish-louse; Sī′phuncle, the siphon or funnel of tetrabranchiate cephalopods: a nectary.—adjs.

From

Rhyncholite, ring′kō-līt, n. the fossil beak of a tetrabranchiate cephalopod.

From

The Cephalopods, again—the highest of all the groups of Mollusca—are represented in the Palæozoic rocks exclusively by Tetrabranchiate forms, which constitute the lowest of the two orders of this class; whereas the more highly specialised Dibranchiates do not make their appearance till the commencement of the Mesozoic.

From

Tetrabranchiate Cephalopods, 112; of the Cambrian, 89; of the Lower Silurian, 112-114; of the Upper Silurian, 130; of the Devonian, 149; of the Carboniferous, 186, 187; of the Permian, 199; of the Trias, 212; of the Jurassic, 237-239; of the Cretaceous, 272-274; of the Eocene, 294; of the Miocene, 312.

From

tetrabrach tetrabromofluorescein

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