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n. pl.1.(Zool.) That class of Mollusca which includes the bivalve shells; the Lamellibranchiata. See Mollusca.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Besides the species analyzed in the present study, deep-sea crabs (Chaceon spp.), deep-sea shrimps (Aristeidae) (Pezzuto et al., 2006; Dallagnolo et al., 2009), silver John dory (Zenopsis conchifera) and Argentine squid (Illex argentinus) (Perez et al., 2009) (Tables 1 and 8), whose landings were not available for the study period, should also be included among the slope resources.
1833....Mollusca and Conchifera hitherto undescribed, which form part of the collection made by Mr.
Associada a gordura de baleias e areia, a cal conchifera transformava-se em uma eficiente argamassa empregada na edificacao de casas, engenhos e igrejas (51).
Argentine shorffin squid, Illex argentinus; Argentine hake, Merluccius hubbsi; silver John dory, Zenopsis conchifera; monkfish, Lophius gastrophysus; Brazilian codling, Urophycis mystacea; black grouper, Epinephelus nigritus; deep-sea shrimps, family Aristeidae; and other bony and cartilaginous fish.
Posteriormente, observam-se mudancas na estratigrafia de alguns sambaquis, com a presenca de uma matriz terrosa, de cor marrom escura, com poucas conchas de moluscos, que se sobrepoe a uma matriz conchifera. (1)
The Solenogastres (= Neomeniomorpha), Caudofoveata (= Chaetodermomorpha), and Polyplacophora were grouped in the subphylum Aculifera, and the Monoplacophora, Bivalvia, Gastropoda, Scaphopoda, and Cephalopoda were placed in the subphylum Conchifera. The Solenogastres, Caudofoveata, Polyplacophora, and Monoplacophora are considered "primitive" groups (Salvini-Plawen, 1980; Haszprunar, 1988; Scheltema, 1993).
Yet they also developed contrasting features, most notably a) the prevalence of double rig trawls, as opposed to the presumably more efficient stern trawls; b) the regular harvesting of the blackfin goosefish stock, although not as a main target; c) the regular discarding of the silver John dory (Zenopsis conchifera) regarded as a potential target at that time; d) the great quantity of vessels, nearly two-fold the number initially recommended (17) based on estimations of annual sustainable catches of hake, codling and silver John dory (Perez et al., 2009a).
Bivalve molluscs are included in the monophyletic clade Conchifera together with the Monoplacophora, Cephalopoda, Scaphopoda, and Gastropoda classes (Kocot et al.
Six species (Illex argentinus, Urophycis mystacea, Merluccius hubbsi, Polymixia lowei, Zenopsis conchifera, Lophius gastrophysus) accounted for 77.8 % of the catch with commercial value; another 9.8 % consisted of other bony fishes and 12.4 % were cartilaginous fishes.
Catches of royal crabs (Chaceon ramosae), spider crabs (Majidae), beard fish (Polimixia lowei), silvery John dory (Zenopsis conchifera), Brazilian codling, Argentine hake (Merluccius hubbsi), wreckfish, angel shark (Squatina argentina), and various skates (Rajidae) were also important and, except for monkfish, most were discarded (Perez & Wahrlich, 2005).