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choana
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choana
choana Anat. (ˈkəʊənə) Pl. -næ (-niː). [mod.L., a. Gr. χοάνη funnel.] A funnel-like opening; applied to the posterior nasal orifices in vertebrates.1878 Macalister Syst. Zool. 13 The pair of maxillary lobes usually unite in the middle line, leaving behind them openings into the nasal cavities (choan...
Oxford English Dictionary
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Choana
The choanae (: choana), posterior nasal apertures or internal nostrils are two openings found at the back of the nasal passage between the nasal cavity Boundaries
A choana is the opening between the nasal cavity and the nasopharynx.
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Anarsia choana
Anarsia choana is a moth of the family Gelechiidae. It was described by Kyu-Tek Park in 1995. It is found in Taiwan and Japan (Ryukyus). References
choana
Moths described in 1995
Moths of Asia
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chone
▪ I. chone (kəʊn) [ad. Gr. χώνη, contr. f. χοάνη choana.] In sponges, a cortical dome-like structure communicating with the subdermal cavity. Hence chonal (ˈkəʊnəl) a., pertaining to this.1887 Sollas in Encycl. Brit. XXII. 415/1 In many sponges..the cortical domes are constricted near their communic...
Oxford English Dictionary
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Actinodon
of these genera by Schoch & Milner (2014) is based on a disagreement over the interpretation of two features purportedly shared between them, a wide choana Schoch & Milner argued that the choana is actually slit-like, and that the size and number of teeth is more variable.
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Amphicotylus
In members of Amphicotylus, the palatines are completely separated from one another by the choana while in Goniopholis the palatines make broad contact prior to the choana.
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Chenoprosopus
Many of other cochleosaurids from the same time period have an elongated vomer and wide and elongate choana. The lateral margin of the choana is not exposed, the opening lacks the anterior expansion and a round shape.
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Olivierosuchus
As a distinguishing feature, Olivierosuchus also has a sharp ridge near the choana, an opening in the skull palate.
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Zatrachys
borders the otic notch, long and slender tabular horns and short postparietal horns, contact between the palatine and the vomer to fully enclose the choana
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Acheloma
(6) skull margin widens at level of and posterior to orbit; (7) palatine and ectopterygoid with tall fangs; (8) large intervomerine fenestra; and (9) choana
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Kenichthys
Various suggestions had been put forward including that the choana was homologous to either the posterior or anterior nostril of non-tetrapods, that it The debate was further complicated by the fact that lungfishes, another group of sarcopterygian fish, also possess a choana with a different form to that
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Gemmobacter intermedius
Gemmobacter intermedius is a Gram-negative, aerobic and non-motile bacterium from the genus of Gemmobacter which has been isolated from the choana of a
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Odocoileini
The common character of this tribe is vomerine septum that completely separates the choana.
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Rhipidistia
The precise time at which the choana of tetrapods evolved is debated, with some considering early rhipidistians as the first choanates. The complete choana then seems to have developed independently in the two surviving clades.
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Eryopoidea
They define the Eryopoidea as all members of Euskelia in which the choana are relatively rounded and the iliac blade is vertical.
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