The first formal use of the word Testudines as a taxon name can be found in Batsch. |
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The taxon is unique among brachyurans due to its distinctive dorsal carapace ornamentation. |
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According to our results, Sclerothorax is nested well within the higher stereospondyls, forming the sister taxon of capitosauroids. |
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These were jawless, armored fish informally called ostracoderms, but more correctly placed in the taxon Pteraspidomorphi. |
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For a distribution to be Palaeotropical a taxon must occur in tropical regions on both continents in the Old World, i.e. in Africa and Asia. |
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Above this level, palynological assemblages are dominated by circumpolles pollen of the taxon Classopollis. |
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The operculum illustrated by Reed does not match in outline the conch, and is here considered to be a different taxon. |
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As with many of the modem Eucopia species, this fossil taxon is characterized by the possession of highly elongate posterior pereiopods. |
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Such a radical change in the mitochondrial gene arrangement within a closely related taxon has never been observed in other coelomate phyla. |
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All pairwise sequence alignments were colinear, that is, blocks were sequential in nucleotide position for each taxon and were nonoverlapping. |
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The identification of this taxon at locality 1 is based upon a highly distinctive tabular horn and diagnostic trunk vertebrae. |
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This group is represented by a single extant species which is thought to be the sister taxon to all other frogs. |
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Afrotheria is a newly recognized taxon comprising elephants, hyraxes, sea cows, aardvarks, golden moles, tenrecs, and elephant shrews. |
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That we are here proves that a solid, akinetic skull doesn't necessarily doom a taxon to morphological stagnation. |
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The proboscis is a synapomorphy of the taxon and is used primarily in prey capture. |
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The second most common taxon was Acarina, which was most common in pond-side arrays. |
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As shown above, using a third taxon to estimate the initial pairwise distances improves their precision. |
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Each taxon represents a single species, except where the number of taxa is given in parentheses. |
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Each taxon used is morphologically distinct, although the rank of these taxa is in flux. |
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The purpose of the Red List categorization is to produce a relative estimate of the likelihood of extinction of the taxon. |
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Red-sided garter snakes are small nonvenomous colubrid snakes, a northeastern subspecies of a taxon that is widely distributed through North America. |
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The unnamed taxon also showed that the anatomical similarities between birds and some alvarezsauroids were highly convergent. |
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Natural range' is defined as the range of a taxon excluding any portion that is the result of introduction. |
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Is the taxon reproducing within the region, or is it a visitor utilizing resources within the region? |
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Consequently, taxogenetic studies may disclose the ancestral species of the cultivated taxon. |
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This taxon only appears on nodular ocean floor and does not seem to be mesopelagic. |
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A taxon may be NA because it is not a wild population or not within its natural range in the region, or because it is a vagrant to the region. |
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Belt desmosomes are the constituent character of the Epitheliazoa, the next higher taxon above the Porifera within the Metazoa, comprising the taxa Placozoa and Eumetazoa. |
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As the only extant rhynchocephalian, Sphenodon represents the best available sister taxon for molecular analysis. |
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A recent change to the species' taxonomy is the recognition, in 1981, of an infraspecific taxon. |
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Data are presented for a total of 223 species in Canada, including 18 species with more than one infraspecific taxon, for a total of 248 taxa. |
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The male variety should preferably be of the same taxon and at the same ploidy level as the female variety. |
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Since two of the primitive calymenides, Pharostomina and Bavarilla, had natant hypostomes it seems very likely that the Cambrian sister taxon would also be natant. |
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The extinction risk for such an isolated population is identical to that of an endemic taxon. |
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Up to 1995, fuscous and non-fuscous strains responsible for CBB were grouped in a single taxon, namely, X. campestris pv. |
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Each taxon name and authority is followed by the frequency of occurrence. |
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This taxon has been observed on all types of substrata but never in the water column. |
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The synapomorphy of the taxon Ecbathyriontidae – Dirivultidae is the presence of a double segment in the female antennule. |
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While bats are highly specialized for flight, they share anatomical characters with the Insectivora, the mammalian taxon that includes shrews and moles. |
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It is a small and monophyletic taxon of marine, shell-less molluscs. |
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Just as with the preceding taxon, this holothurian is found on all types of substratum, whether covered or not by nodules. |
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This taxon reaches a maximum of 50 cm in length and 15 cm width with a caudal appendage up to 30 cm long. |
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If two or more proposals relate to the same taxon and are of the same substance, the Conference shall consider only one proposal. |
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All of the identifiable teeth and otoliths from the samples were identified and depth ranges were assigned to each taxon based on the known depths of living counterparts. |
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Finally, decreases in both taxon richness and abundance are typically a sign of overall inhibitory effects, such as toxicity or smothering. |
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Furthermore, Straneck's treatment of an Argentine tyrannulet taxon as referable to S. griseiceps and the resulting revalidation of S. griseiceps are not confirmed. |
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For instance, if the taxon specificity supposedly corresponds to a plant species such as maize, the samples could correspond to maize varieties with different genetic origins. |
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Others consider them a sister group of vertebrates in the common taxon of craniata. |
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A consideration of taxon longevity appears to support an increase in predation pressure around this time. |
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The evolution of helodermatid squamates, with descriptions of a new taxon and an overview of the Varanoidea. |
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However, the type and the name's rank do not serve to define the limits of a taxon in the context of a given taxonomy. |
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They do not represent a distinct taxon or systematic grouping, but instead have a polyphyletic relationship. |
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Additionally, it suggests a sister taxon relationship exists between the Bivalvia and the Gastropoda. |
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A polythetic taxon is one where the constituent organisms share a large number of characteristics. |
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Other criteria include the number of known populations considered to be securely protected, the size of the various populations, and the ability of the taxon to persist at its known sites. |
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The base of each zone is defined by the first occurrence of the taxon. |
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The measure reflects the fact that a taxon will not usually occur throughout the area of its extent of occurrence, which may contain unsuitable or unoccupied habitats. |
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A quantitative analysis is defined here as any form of analysis which estimates the extinction probability of a taxon based on known life history, habitat requirements, threats and any specified management options. |
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In the case of taxa obligately dependent on other taxa for all or part of their life cycles, biologically appropriate values for the host taxon should be used. |
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In the Guidelines the term population is used for convenience, when reference is made to a group of individuals of a given taxon that may or may not interchange propagules with other such entities. |
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This new taxon provides more evidence for an early radiation of Salvelinus in intermontane drainages of the western United States. |
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Bush-shrikes encompass nearly 50 species of African birds in the family Malaconotidae, a taxon that was once considered to be a subfamily within the family Laniidae. |
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An important assumption then in using molecules for phylogeny reconstruction is to select the appropriate gene for the age of the taxon under study. |
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For example, it is important to consider not only conditions within the region but also the status of the taxon from a global perspective and the proportion of the global population that occurs within the region. |
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Fish belonging to the taxon Elasmobranchii, which includes sharks, skates, rays and similar species are generally very vulnerable to exploitation due to their life-cycle characteristics. |
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The taxon is legally protected in three of its ranging states. |
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The gorals of Shanxi, sometimes separated as a taxon vidianus, fall into the range of N. griseus. |
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However, their sister taxon is the extinct family Protostegidae that included other species that did not have a hard carapace. |
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The bee was carrying pollen of a previously unknown orchid taxon, Meliorchis caribea, on its wings. |
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The royal decree designates the taxon as Mitrella mesnyi, however this is a taxonomically illegitimate synonym for Sphaerocoryne affinis Ridley. |
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Pteridophyta is no longer recognised as a valid taxon because it is paraphyletic. |
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When the slides are observed under a microscope, the researcher counts the number of grains of each pollen taxon. |
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The monomorphic enzymes include ADH, LDH and MDH, all of which produced identical banding patterns regardless of the taxon tested. |
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However, further study based on sufficient material is needed for a formal description of a possible new taxon. |
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The reason for this is that a biological trait can be expressed within a community by more than one taxon. |
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The 16S rRNA analysis showed this taxon to belong to a clade with Candidatus Clavochlamydia salmonicola, a taxon found in fish. |
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We also determined number of copies of CD36 gene in each individual taxon and compared its variation across these different taxa. |
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Each of these terms describes a valid taxon, phylum, subphylum or family. |
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Dividing a taxon into multiple, often new, taxa is called splitting. |
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These organisms were identified to genus or lowest practical taxon level. |
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Genome duplication occurred prior to the divergence of this taxon. |
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Editors Yang and Higgs present this varied text on myxobacteria, intended to be both accessible to students new to the taxon and useful for seasoned researchers. |
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The North Pacific albatrosses are considered to be a sister taxon to the great albatrosses, while the sooty albatrosses are considered closer to the mollymawks. |
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Initially, when the genus was poorly known, it was only included in Sauria, being some kind of reptile, but not in any more narrowly defined taxon. |
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Although recognized as a potential complication after endotracheal intubation in birds, the complication rate of postintubation tracheal obstruction in this taxon is unknown. |
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As a point of reference, each chapter on a taxon includes a table summarizing the animals' discovery, classification, geographic and stratigraphic occurrences, and ages. |
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The precise delimitation of the taxon range is, however, not possible, because the material is scarce and the successions with conodont-bearing strata are thin. |
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Within conservation biology, the term flagship species refers to a species or taxon that is a symbol or rallying point to catalyze conservation actions. |
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This taxon was described from three specimens, three syntypes. |
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Thirteen years after Linnaeus's description Marmaduke Tunstall recognized the Eurasian birds as a distinct taxon aesalon in his Ornithologica Britannica. |
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The Marattiaceae are a primitive group of tropical ferns with large, fleshy rhizomes and are now thought to be a sibling taxon to the leptosporangiate ferns. |
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More recently, phylogenetic research has questioned whether the bryophytes form a monophyletic group and thus whether they should form a single taxon. |
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Leptarctus and the proboscidean taxon are both rare Great Plains taxa, and these specimens increase the amount of information that is already known from them. |
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The chelicerate hemocyanin subunits are basal, consistent with the assumption that the Chelicerata is a rather distinct arthropod taxon. |
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A simple form taxon, such as Chuaria circularis, may embrace a polyphyletic array of organisms that includes cyanobacteria as well as protists. |
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