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Lateral cephalometric radiograph, used for skull analysis Lateral cephalometric radiograph is a radiograph of the head taken with the x-ray beam perpendicular to the patient's sagittal plane. Natural head position is a standardized orientation of the head that is reproducible for each individual and is used as a means of standardization during ...
The holotype of this species is USNM 10300, a partial skull from the Late Miocene Monterey Formation of Lompoc, California. [3] Although previously included in the same genus as the humpback whale, "M." miocaena differs in having a less ventrally inflated tympanic bulla, short and rectangular nasals, and the narrow finger of the frontal is excluded from the posterior part of the nasal bones.
The skull of the holotype has a length of 182 millimeters (7.2 in). In 2012 several distinguishing traits were established. The snout is elongated. The main skull opening, the fenestra nasoantorbitalis, is small with 13% of the total skull length. The part in front of it equals 63% of the skull length.
Since the skull ossifies over the brain during infant development, external craniological means could be used to diagnose the internal states of the mental characters Through careful observation and extensive experimentation, Gall believed he had established a relationship between aspects of character, called faculties , with precise organs in ...
The foramen ovale is used as the entry point into the skull when conducting a Percutaneous Rhizotomy using either radio-frequency ablation, balloon compression or glycerol injection. These are performed to treat trigeminal neuralgia. In the procedure, the electrode is introduced through the cheek of an anesthetized patient and radiologically ...
It was a huge-sized pinniped with skull length of around 47 cm (19 in), surpassed only by Pontolis, which had a skull of 60 cm (24 in) long. [2] Gomphotaria had comparatively small eyes, increased upper and lower canines and four tusks, with one pair in the lower and upper jaws.
With the skull as the holotype specimen, they were grouped into a new genus and species as Sahelanthropus tchadensis, the genus name referring to the Sahel, and the species name to Chad. These, along with Australopithecus bahrelghazali , were the first discoveries of any fossil African great ape (outside the genus Homo ) made beyond eastern and ...
Holotype skull of Libonectes morgani. Libonectes is an extinct genus of sauropterygian reptile belonging to the plesiosaur order. It is known from specimens found in the Britton Formation of Texas (USA) and the Akrabou Formation of Morocco, which have been dated to the lower Turonian stage of the late Cretaceous period.