Partial skull elements present are the maxilla, quadrate, parabasisphenol, jugal, quadratojugal, mandible, and the palate. ... acting like a strut that extends past the posterior end of the skull. H. scholtzi's parietals are broad, triangular, and take ... Classification and phylogeny of the diapsid reptiles. Zoological Journal of the Linnean Society 84:97-164. Broom, R. "On Some ... up most of the post-orbital region. The corners form a wing-like concave process postlaterally. The pineal foramen is large, ...
Many of these classifications required further research, and some were incorrect altogether. In 1974, a second skull known as ... but deformation of the zygomatic arch suggests the squamosal extends nearly to the posterior end of the maxilla. Also on the ... The splenial is bound by the dentary, which keeps it from being visible on the ventral edge of the mandible. The quadrate and ... Another difference is that Lobalopex has a dorsal orbital margin that has not become thicker with extra layers of bone, where ...
The skull of Hesperosuchus was only partially preserved and is missing many segments. The mandible and the skull of the ... Fragments of the left premaxilla and maxilla were found to have sockets for nine teeth, with four being in the premaxilla. The ... The length of the extended hind limb in both genera are approximately equal to the length of the presacral vertebrae. ... In M. J. Benton (ed.). The Phylogeny and Classification of the Tetrapods Vol. 1.Amphibians, Reptiles, Birds. Clarendon Press, ...
... s can be found both in the maxilla and mandible. Although, 80% are situated in the mandible with the posterior ... Rare orbital invasion of the neoplasm has also been reported. Conventional ameloblastomas have both cystic and solid neoplastic ... Due to thin bone and weak barriers, the neoplasm can extend into the sinonasal passages, pterygomaxillary fossa and eventually ... Ivey RH, Churchill HR (1930). "The need of a standardized surgical and pathological classification of tumors and anomalies of ...
The skull has a septomaxillary foramen. The maxilla makes up a significant section of the lateral wall of the snout and ... A sheet of bone forms the septomaxilla that lines the floor of the naris and extends backwards between the nasal and maxilla. ... forming the upper orbital margin. As in other cynodonts, the frontal is excluded from the orbital margin by the prefrontal and ... Ontogenetic changes that were unique to Galesaurus include a large shift in the relative position of the mandible within the ...
However most anatomical descriptions are limited by the fact that only skulls and cranial and mandible fragments make up the ... Teeth that occur in the maxilla have been considered isodonts. The lateral surface of the maxilla presents a lateral flexion ... however it sports a sculptured postero-dorsal process extending onto the skull roof to insert between lacrimal and nasal. Much ... The classification of Labidosaurikos has had some discrepancy based on the debate of multiple rowed teeth having evolved twice ...
Each premaxilla preserves five teeth, with 14 more teeth on each maxilla based on the "Mirani Shire Skull". The fourth tooth ... Although no complete mandibles are known yet, the fossils of the upper jaws indicate that Paludirex had an overbite akin to an ... How far the nasal would have extended into the nares is unclear as the anterior-most tip is broken off. In keeping with the ... The space between the eyesockets is relatively wide and the orbital margins are rugose in their texture. The frontal preserves ...
The mandible of Limnoscelis was well-built, with large processes for jaw muscle attachment, indicating that it had a powerful ... Limnoscelis had a relatively elongated skull, with a narrow snout and wider posterior region. Its teeth were conical and ... Limnoscelis had particularly well-developed incisors, peaking in size at the anterior maxilla, similar to the placement of the ... Watson, D.M.S. (1917). "A Sketch Classification of the Pre-Jurassic Tetrapod Vertebrates". Proceedings of the Zoological ...
In bony fish, the maxilla is called the "upper maxilla," with the mandible being the "lower maxilla". The alveolar process of ... who also designed a new classification system, which is especially well suited for biological systems. The skull of fishes is ... The rostrums extend ventrally in front of the fish. In the case of hammerheads the rostrum (hammer) extends both ventrally and ... In orbitostyly, the orbital process hinges with the orbital wall and the hyoid provides the majority of suspensory support. In ...
Of the skull, only the premaxilla, frontal (top orbit bone), pterygoid (palate bone), quadrate (skull joint bone), orbital ... Though fossils from Europe and Africa have been assigned to the group, their classification is disputed. It is unclear where ... In the lower jaw, a partial mandible is known but it is unfigured and undescribed in scientific literature. Being a ... These researchers pointed out that the narrowing of the pelvis, upper maxilla, and thorax could have been adaptations to enable ...
Besides a partial skull, various skull and mandible fragments as well as parts of the body skeleton were found here. In total ... This extended ventrally and merged with the acromion or shoulder level, which in turn joined with the coracoid process. This ... In lateral view, the snout was dominated by the maxilla, which fused with the nasal bone along nearly its entire length. The ... The lacrimal bone was broad and formed part of the orbital rim, with the section involved in the ocular window exceeding that ...
All beaks are composed of two jaws, generally known as the upper mandible (or maxilla) and lower mandible (or mandible), ... attach to the proximal end of the lower mandible and to the bird's skull. The muscles that depress the lower mandible are ... The ridge line on the upper maxilla may extend to a prominent crest on the front of the face and on the head, such as in the " ... By contrast, an orbital ring is bare skin ringing the eye. In some species, such as little ringed plover, the orbital ring may ...
The mandible sits beneath the maxilla. It is the only movable bone of the skull (discounting the ossicles of the middle ear). ... The mandible is the movable part of the jaw. MCAT - Medical College Admission Test. Medical biology - Medical classification - ... Nasopharynx - The upper portion of the pharynx, the nasopharynx, extends from the base of the skull to the upper surface of the ... It presents a malar and a temporal surface; four processes (the frontosphenoidal, orbital, maxillary, and temporal), and four ...
2022). A study on the skull anatomy of a well-preserved new specimen of Jeholornis, and on the morphometrics of the mandible ... A study reinterpreting the orbital, antorbital and narial fenestrae in the skulls of the anurognathid pterosaurs, based mainly ... "A juvenile skull from the early Palaeocene of China extends the appearance of crocodyloids in Asia back by 15-20 million years ... "New contributions to the skull anatomy of spinosaurid theropods: Baryonychinae maxilla from the Early Cretaceous of Igea (La ...
... the upper area of the premaxilla extending backwards, low orbits of the eyes, strong post-orbital constriction, infraorbital ... The mandibles of Diplobune reveal that its body's height increases towards the rear area, and the angle of the mandible is ... skull from Ulm, Germany (the latter skull is larger). The hind area of the basilar part of occipital bone (basioccipital area) ... Both the nasal bones and the maxilla are elongated, the tip of the latter being rounded. The nasal bones are welded to each ...
A study on the histology of mandibles and maxillae of Endothiodon bathystoma, and on the development and evolution of multiple ... 2021). A study on the ontogenetic variation in the anatomy of the skulls of biarmosuchians, based on data from skulls of ... Le Renard, L.; Stockey, R. A.; Upchurch, G. R.; Berbee, M. L. (2021). "Extending the fossil record for foliicolous ... Bai, R.; Song, H.; Benton, M. J.; Tian, L. (2021). "Phylogenetic classification and evolution of Early Triassic conodonts". ...
New specimen of the rhinesuchid Australerpeton cosgriffi (a skull and mandible) is described from the Permian Rio do Rasto ... 2017), extending known geographic range of the taxon. A study on the morphology, growth and development of Dickinsonia costata ... A study on the anatomy of the teeth and maxilla of Euchambersia mirabilis and its implications for the hypothesis that venom ... 2017), including the presentation of new phylogeny-based and rank-based classifications. A study on large-scale patterns of ...