Information om | Engelska ordet BASICRANIUM

Exempel på hur man kan använda BASICRANIUM i en mening

• Some other anatomical trends are correlated in the human evolutionary path with brain size: the basicranium becomes more flexed with increasing brain size relative to basicranial length.
• thumb Pang and Cheng, 1998 distinguished Tianzhenosaurus from all other ankylosaurids based on the following traits: A flat, low, medium-sized, isosceles triangle shaped skull; skull roof covered with irregular bony tubercles; a relatively long premaxilla; a small orbit surrounded by a bony ring; horizontally elongates narial openings; septomaxilla not separating the narial openings; maxillary tooth rows slightly convergent posteriorly; short basicranium; maxilloturbinal located laterally in middle part of the palatal vault; vertical occipital region; narrow and high occipital condyle; occipital condyle not visible in dorsal view; opisthotic extends lateroventrally as a curved process; mandible is deep with a convex ventral border; no mandibular ornamentation; tooth crowns have cingula on labial sides, swollen bases, and middle ridge on lingual sides; short, amphicoelous cervical centrum; dorsal centrum is long and flat at both ends; eight fused vertebrae in sacrum; short and thick anterior caudal vertebrae; narrow and elongated posterior caudal vertebrae that ended with a tail club; rectangular, plate-like scapula; proximal and distal ends of humerus are moderately expanded and not twisted; thick femur lacking the fourth trochanter; tarsometatarsal and digits that are typical for ankylosaurs.
• Tarchia had previously been distinguished from Saichania on the basis of its relatively larger basicranium, an unfused paroccipital process-quadrate contact and, based on PIN 3142/250, the fact that the premaxillary rostrum is wider than the maximum distance between the tooth rows in the maxillaries.
• It contained elements including a left and partial right maxillae; basicranium; both dentaries; teeth; cervical, a dorsal, sacral and caudal vertebrae; haemal arches; ribs; ilia, pubis and proximal ischia; left and distal end of right femur; left tibia; left astragalus and calcaneum; proximal end of left fibula and right tibia; metatarsals; phalanges; and a pedal ungual.
• hislopi was based on a chimeric syntype material - a rhynchosaurian basicranium mixed with phytosaurian partial snout, scutes and some teeth.
• However, Lydekker's description was based on a chimeric syntype, combining fossils from multiple unrelated reptiles: a rhynchosaurian basicranium mixed with the partial snout of a phytosaur, scutes and some teeth.
• The basicranium (braincase floor) has gracile paroccipital processes (extensions that connect to other bones in the skull).
• 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.
• The other four specimens consist of one partial rostrum, a partial skull consisting of the right side, the rear section of a skull including basicranium, and a partial skull consisting of the narial region and a partial endocranial cast.
• Schmidt-Kittler (1981) noted the basicranium to have features matching arctoids, and deemed it not to belong in Musteloidea due to its shallow suprameatal fossa and the form of its molars, thus regarding it to be a "basal arctoid" that emerged before the development of Musteloidea.
• The holotype specimen, YGSP 47357, was discovered in 1994 and comprises a partial skull, including the braincase, basicranium, occipital, and ossicones ("horn-like" structures in giraffids).

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