- notothyrium
- Brack, нототириум
* * *нототириум
English-Russian dictionary of geology. 2011.
English-Russian dictionary of geology. 2011.
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
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
brachiophores — n. [L. brachium, arm; Gr. phorein, to bear] (BRACHIOPODA) Blades of the secondary shell projecting from the side of the notothyrium and forming anteromedian boundaries of sockets in some brachial valves … Dictionary of invertebrate zoology
chilidium — n. [Gr. dim. cheilos, lip] (BRACHIOPODA) A plate covering the notothyrium, when present, in the dorsal valve; chilidial plates if more than one; see homeochilidium … Dictionary of invertebrate zoology
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
homeochilidium — n. [Gr. homoios, like; dim. cheilos, lip] (BRACHIOPODA) An external triangular plate that closes most or only the apical part of the notothyrium … Dictionary of invertebrate zoology