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Jaffaia
''Jaffaia'' is a monotypic genus of brachiopods belonging to the family Dallinidae. The only species is ''Jaffaia jaffaensis'' from southern Australia. Description ''J. jaffaensis'' reaches a maximum length of 23.4 mm and fits the following diagnosis: Overall outline ovoid to circular, relatively thin laterally and with commissures (junction between the dorsal and ventral shells/valves) straight, anterior commissure rectimarginate to lightly sulcate. Beak (posterior point of shell) suberect, with deltidial plates conjunct (as symphytium) and mostly exposed, and bearing a small foramen. Hinge teeth large relative to symphytium, with swollen bases (not supported by 'dental plates'). Cardinalia with inner and outer hinge plates separated by thick crural bases, inner hinge plates forming a V-shaped septalium supported by median septum. Cardinal process well developed, supported anteriorly by a triangular ridge between the hinge plates, and with a posteriorly facing myophore. The m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dallinidae
Dallinidae is a family of brachiopods belonging to the order Terebratulida. Genera Genera: * †'' Antigoniarcula'' Elliott, 1959 * '' Campages'' Hedley, 1905 * ''Dallina ''Dallina'' is a genus of small to average size lampshells (maximum long). It is known since the Miocene. Description Small to large, triangular to subquadrangular in outline; rectimarginate to paraplicate; beak erect, without beak ridges; f ...'' Beecher, 1893 * '' Jaffaia'' Thomson, 1927 * '' Nipponithyris'' Yabe & Hatai, 1934 References {{Taxonbar, from=Q3542958 Terebratulida Brachiopod families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Genus
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda.' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachiopods
Brachiopods (), phylum Brachiopoda, are a phylum of trochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear end, while the front can be opened for feeding or closed for protection. Two major categories are traditionally recognized, articulate and inarticulate brachiopods. The word "articulate" is used to describe the tooth-and-groove structures of the valve-hinge which is present in the articulate group, and absent from the inarticulate group. This is the leading diagnostic skeletal feature, by which the two main groups can be readily distinguished as fossils. Articulate brachiopods have toothed hinges and simple, vertically-oriented opening and closing muscles. Conversely, inarticulate brachiopods have weak, untoothed hinges and a more complex system of vertical and oblique (diagonal) muscles used to keep the two valves aligned. In many brachiopods, a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lophophore
The lophophore () is a characteristic feeding organ possessed by four major groups of animals: the Brachiopoda, Bryozoa, Hyolitha, and Phoronida, which collectively constitute the protostome group Lophophorata.Introduction to the Lophotrochozoa – Retrieved 3 May 2010 All lophophores are found in aquatic organisms. Etymology ''Lophophore'' is derived from the Greek ''lophos'' (crest, tuft) and ''-phore'', ''-phoros'' (φορος) (bearing), a derivative of ''phérein'' (φέρειν) (to bear); thus crest-bearing.Characteristics The lophophore can most easily be described as a ring of ted tentacles surrounding the mouth, but it is often horseshoe-shape ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nipponithyris
''Nipponithyris'' is a genus of brachiopods belonging to the family Dallinidae Dallinidae is a family of brachiopods belonging to the order Terebratulida. Genera Genera: * †'' Antigoniarcula'' Elliott, 1959 * '' Campages'' Hedley, 1905 * ''Dallina ''Dallina'' is a genus of small to average size lampshells (maximum .... The species of this genus are found in New Zealand. Species: *'' Nipponithyris afra'' *'' Nipponithyris lauensis'' *'' Nipponithyris nipponensis'' *'' Nipponithyris notoensis'' *'' Nipponithyris subovata'' *'' Nipponithyris yabei'' References {{Taxonbar, from=Q3543919 Brachiopod genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synonym (taxonomy)
The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linnaeus was the first to give a scientific name (under the currently used system of scientific nomenclature) to the Norway spruce, which he called ''Pinus abies''. This name is no longer in use, so it is now a synonym of the current scientific name, ''Picea abies''. * In zoology, moving a species from one genus to another results in a different binomen, but the name is considered an alternative combination rather than a synonym. The concept of synonymy in zoology is reserved for two names at the same rank that refers to a taxon at that rank - for example, the name ''Papilio prorsa'' Linnaeus, 1758 is a junior synonym of ''Papilio levana'' Linnaeus, 1758, being names for different seasonal forms of the species now referred to as ''Araschnia le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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