- delthyrium
- del·thy·ri·um
English syllables. 2014.
delthyrium
Look at other dictionaries:
delthyrium — n.; pl. ria [Gr. 4th letter, delta; thyrion, door] (BRACHIOPODA) The central triangular notch in the ventral valve, open to the hinge line; facilitating the passage of the pedicle; usually closed off from the hinge plate by the deltidium;… … Dictionary of invertebrate zoology
delthyrium — … Useful english dictionary
lamp shells — ▪ animal Introduction also called brachiopod, any member of the phylum Brachiopoda, a group of bottom dwelling marine invertebrates. They are covered by two valves, or shells; one valve covers the dorsal, or top, side; the other covers… … Universalium
delthyrial — (ˈ)del|thīrēəl adjective Etymology: New Latin delthyrium + English al : of, relating to, or constituting a delthyrium … Useful english dictionary
Rhynchonellida — Taxobox image width = 240px image caption = Hiscobeccus capax name = Rhynchonellida regnum = Animalia phylum = Brachiopoda classis = Rhynchonellata ordo = Rhynchonellida ordo authority = Kuhn, 1949 subdivision ranks = Superfamilies subdivision =… … Wikipedia
deltidial plates — (BRACHIOPODA) A plate or pair of plates growing medially from the margin of the delthyrium, almost or completely closing it … Dictionary of invertebrate zoology
deltidium — n.; pl. tidia, [Gr. 4th letter Δ, delta; idion, dim.] (BRACHIOPODA) A plate that closes off the delthyrium, in some forms there are two plates; also called pseudodeltidium … Dictionary of invertebrate zoology
homeodeltidium — n. [Gr. homoios, like; 4th letter, delta; dim. thyrion, door] (BRACHIOPODA) A convex triangular plate closing most or only the apical part of the delthyrium … Dictionary of invertebrate zoology
mesothyridid — n. [Gr. mesos, middle; thyridos, a window] (BRACHIOPODA) Pedicle opening partly in the ventral umbo and partly in the delthyrium, with beak ridges appearing to bisect the opening … Dictionary of invertebrate zoology
notothyrium — n. [Gr. notos, back; thyrion, door] (BRACHIOPODA) The triangular notch in the dorsal valve, when present, open to the hinge line facilitating pedicle exit, usually closed off from the hinge plate by the chilidium; see delthyrium … Dictionary of invertebrate zoology
