Information om | Engelska ordet CLEITHRUM

Exempel på hur man kan använda CLEITHRUM i en mening

• The most notable fossil is a large endochondral shoulder girdle consisting of the cleithrum, scapula, and coracoid (but not the interclavicle and clavicles), all connected into one shoulder bone.
• They are distinguished from other cyprinids by a combination of features: As in their closest relatives, their lower lip is expanded at its posterior rim to form a round or oval sucking pad, the vomero-palatine organ is much reduced or completely lost, the pectoral fins have at least the first two rays enlarged and usually unbranched, the supraethmoid is wider than long when seen from above, and the cleithrum is narrow and elongated to the front.
• I saxicola exhibits minute abdominal platelets with much more than six odontodes, a plated area under the first three plates of the lateral line, an exposed portion of cleithrum bordering all the posterior margin of the opercular opening on lateral side of the body, and an exposed surface of supraoccipital flat or slightly convex.
• Eileanchelys is characterized by the following features: the presence of nasal; elongated postorbital skull; absence of flooring of the cavum acustico-jugulare; processus interfenestralis of the opisthotic more slender than that of more basal forms but more robust than that of crown-group turtles; separate openings of the canalis cavernosum and canalis stapedio-temporalis present within the cavum acustico-jugulare; a reduced thickness of the basicranium floor comparable with that of crown-group turtles; well-developed antrum postoticum; flat and horizontal vomer that is free of contacts for most of its length except at its extremities and along a short suture with the prefrontal; absence of processus trochlearis oticum; posteroventrally open incisura columellae auris; at least eight neurals (an additional plate between neural 8 and suprapygal 1 may be a ninth neural or a supernumerary suprapygal), two broad suprapygals, and eight costals present; absence of carapacial or plastral fontanelle in adult individuals; one short but broad cervical scute present; vertebral scutes wider than pleurals; vertebral 3–4 sulcus on neural 6; reduced cleithrum present; arrow-shaped entoplastron that does not separate the epiplastra anteriorly; one pair of mesoplastra that meet medially; one small pair of extragulars present; and anal scute that does not reach the hypoplastron.
• Some postcranial skeletal elements like the interclavicle, cleithrum, and scapulocoracoid resemble those found of genera Whatcheeriidae.
• Similar to males, they have iridescent green or gold speckling, though the speckles are concentrated on the opercles or cleithrum (bone that extends from pectoral fin up to the cranium above the gills).
• The dermal ornamentation covers about 80% of the cleithrum of Umzantsia; this fishlike characteristic contrasts with the un-ornamented cleithra of most other Devonian limbed vertebrates, suggesting a phylogenetic position transitional between proper limbed vertebrates (traditionally called tetrapods) and more basal taxa such as Tiktaalik.
• The coracoid, mesocoracoid, and scapula are stouter in males, with the three bones being autogenous (that is, unfused), in contrast to Bibarba bibarba where these bones are fused with the cleithrum.
• It was discovered to belong to the genus Brachycephalus after diagnosis of the osteological tract, with a reduction in the phalanx bone, an arciferal shoulder girdle in which the ossified procoracoids and epicoracoidal cartilages are fused to the clavicle, coracoid and scapula, with an expanded suprascapula with a prominent cleithrum and absence of the sternum.

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