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Bone of the lower jaw
The surangular is a jaw bone found in most land vertebrates, except mammals. The surangular makes up the upper portion of the back half of the outside
Surangular
Genus of giant ichthyosaurs
contains a single species, I. severnensis. It is known from two fragmentary surangular bones of the lower jaw, discovered in separate places in 2016 and 2020
Ichthyotitan
Genus of Late Cretaceous dinosaur
surface. On its posterior end, it meet the surangular. It had a small hole near its posterior end, called surangular foramen or fenestra. Both bones were the
Velociraptor
Extinct genus of dinosaurs
from the Aptian. It consists of a rear right lower jaw including the surangular, prearticular and articular. Further material referred to S. suwati includes
Siamraptor
Surangular of Ichthyotitan (A) and "Aust Colossus" (B)
List of informally named Mesozoic reptiles
List_of_informally_named_Mesozoic_reptiles
Tyrannosaurus rex specimen
an infection in the right upper jaw and there are bite traces in the surangular of the left lower jaw. This may have been caused by a male T. rex during
Trix_(dinosaur)
Extinct genus of reptiles
a large portion of the surangular, rather than the surangular acting as the overlapping bone where they meet. The surangular internally bears a large
Tanystropheus
Clade of tetrapods
dentary (the tooth-bearing bone), as well as the articular, angular, surangular and splenial. In cynodonts, these jaw bones other than the dentary became
Synapsida
Opposable articulated structure at the entrance of the mouth
the braincase, while the lower jaw bones (dentary, splenial, angular, surangular, and articular) have been fused together into a unit called the mandible
Jaw
Extinct genus of dinosaurs
combination of a kinked suture between the angular and the surangular, and the basal trait of the surangular reaching the rear jaw edge. The rather small foramen
Monolophosaurus
the jaw articulation. It opens dorsally, and is laterally walled by the surangular and medially by the prearticular; as the latter is usually much lower
Glossary_of_dinosaur_anatomy
Extinct genus of cynodonts
articular bones like in more basal synapsids, but also the squamosal and surangular bones. A joint between the dentary and squamosal bones, as seen in modern
Probainognathus
Hadrosaurid dinosaur genus from Late Cretaceous US and Canada
bottom margin of the jaw below the surangular and behind the dentary. The prearticular is a thin bone bracing the surangular and angular from the inside of
Lambeosaurus
Genus of dromaeosaurid dinosaurs
premaxillary bone, the right lacrimal bone, a partial right dentary, the right surangular bone, 14 presacral vertebrae, three caudal vertebrae, fragments of both
Kuru_kulla
Extinct genus of dinosaurs
(Russia). Fossils recovered include the holotype maxilla, a premaxilla, a surangular, and a few bones from the hand and foot. Additional remains referred to
Kileskus
Extinct genus of dinosaurs
containing foramina that perforate the body of the surangular, a low coronoid process on the surangular with a concave area located caudodorsally, and an
Eotyrannus
Extinct genus of theropod dinosaurs
fenestra, the main opening in the outer side, is mainly located in the surangular. The described specimens of Yutyrannus contain direct evidence of feathers
Yutyrannus
Extinct family of theropod dinosaurs
frontals and a loose articulation between the dentary and the angular/surangular. This cranial kinesis would have dampened forces on the bones of the skull
Allosauridae
Extinct genus of reptiles
the mandible, specifically the back of the surangular, angular and the entire articular bone. The surangular is described as being expanded towards the
Eremosuchus
Noasaurid theropod dinosaur genus from the Late Cretaceous period
which line a socket which connects to the surangular bone at the back of the lower jaw. Although the surangular bone is not preserved, several other bones
Masiakasaurus
Extinct genus of dinosaurs
found, which likely supported a rhamphotheca. Both angular and articular-surangular-coronoid (ASC) complex are comparatively smaller than the dentary. The
Gigantoraptor
Geologic formation in Thailand
cranial and postcranial skeleton comprising premaxilla, maxilla, jugal, surangular, prearticular, articular, vertebrae, manual ungual, ischium, tibia, and
Khok_Kruat_Formation
Extinct subfamily of reptiles
of paracraniokinesis in which the dentary bone articulates against the surangular bone, further jointing the lower jaw and hypothetically allowing this
Brachyrostra
Genus of reptiles
lower jaw), formed by the junction of the dentary with other jaw bones (surangular and angular). Inside the skull, under the nostrils, a hollow is seen that
Postosuchus
Geologic formation in the United States
Eolambia E. caroljonesa Mussentuchit Member Predentaries, dentaries, surangulars, premaxillae, nasal, maxillae, jugals, postorbitals, quadrates, spuamosal
Cedar_Mountain_Formation
Genus of tyrannosaurid dinosaur from the Late Cretaceous period
laterosphenoid, the right palatine, the left dentary, the left splenial, the left surangular, the left prearticular, a dorsal rib, a caudal chevron, both pubic bones
Lythronax
Bone in the lower jaw of reptiles, amphibians and birds
located on the lingual side (closest to the tongue) between the angular and surangular. The splenial and coronoid are together known as the paradental elements
Splenial
Extinct clade of dinosaurs
asymmetrical and have multiple vertical ridges; there is a foramen in the surangular; and the quadrate bone has a more prominent depression for the articulation
Hadrosauromorpha
Extinct genus of dinosaur from the Jurassic of South Africa
premaxillae, a fragment of the maxilla, two dentary fragments, a partial surangular bone, a partial angular bone, a partial prearticular bone, an articular
Dracovenator
Extinct genus of dinosaurs
anterior and posterodorsal (top-rear) portions, the part of the left surangular, and part of the left angular. The dentary is around sixty-five percent
Beipiaosaurus
Extinct genus of therizinosaurid dinosaur from late Cretaceous
to contact the surangular bone behind it; by contrast, the hind part of the dentary in Erlikosaurus gradually approached the surangular in a gentle arc
Segnosaurus
Extinct clade of reptiles
prefrontal, separating lacrimal and nasal; a strongly convex dorsal margin of surangular and palatal teeth that are inserted into alveoli. Some of the synapomorphies
Proterochampsia
Extinct genus of dinosaurs
postorbital, one right premaxilla, a left and right maxilla, a right jugal, surangular, and quadrate, one predentary, a right and left dentary, and assorted
Sirindhorna
Extinct genus of dinosaurs
high. In the lower jaw, the surangular shows a bone shelf at its outer side, under the groove between the front surangular opening and the notch for the
Murusraptor
Caenagnathid dinosaur genus from the Late Cretaceous
surangular). It was connected to the top border of the dentary through an articular depression. The articular (bone located just below the surangular)
Beibeilong
Extinct genus of reptiles
wave, as it is too poorly preserved to determine. Both the angular and surangular bone contribute to the mandibular fenestra and form the back of the lower
Dentaneosuchus
Genus of theropod dinosaurs
a clear line of separation between the dentary at the front, and the surangular and angular bones at the back. The premaxillary teeth of Nanotyrannus
Nanotyrannus
Genus of carcharodontosaurid dinosaur from the Early Cretaceous
Giganotosaurus shared a thick horizontal ridge on the outside surface of the surangular bone of the lower jaw, underneath the articulation with the skull. The
Acrocanthosaurus
Extinct genus of tetrapods
to the species; these are the trunk osteoderms, ornamentation on the surangular and angular, and a longitudinal median groove ventrally placed on the
Heleosaurus
Extinct genus of dinosaurs
horizontal trough below the suture with the lacrimal. The joint surface of the surangular is pierced by a foramen. Among the material found was an about four centimetres
Batyrosaurus
Genus of extinct crocodylomorph
both the reinforced postorbital bone and a large accommodation on its surangular, suggesting unusually well-developed mandibular adductor musculature.
Eosphorosuchus
Species of ray-finned fish
three bones make up the lower jaw: the dentary, the angular, and the surangular. The cranial surface of the skull is made up of the nasals, the antorbital
Bowfin
Extinct genus of reptiles
of the neck, as well as the relative lengths of the processes of the surangular. Heckert, A. B., and Lucas, S. G. (2000). Taphonomy, phylogeny, biostratigraphy
Coahomasuchus
Extinct superfamily of dinosaurs
a D-shaped cross section. In the lower jaw, a prominent ridge on the surangular bone extends sideways from just below the jaw joint, except in the basal
Tyrannosauroidea
Subfamily of reptiles
Suprastapedial process of quadrate distally expanded. Dorsal edge of surangular thin lamina of bone rising anteriorly to posterior surface of coronoid
Mosasaurinae
Extinct genus of reptiles
remaining between angular and surangular. The dorsal end of the dentary extends posteriorly around part of the surangular; the outer surface of the dentary
Adamantinasuchus
Extinct genus of ankylosaurian dinosaurs
and right mandibles are preserved and include the articular, angular, surangular and prearticular. The posterior surface is remodelled on the sides and
Peloroplites
Extinct genus of dinosaurs
fenestra was elliptical but not enlarged, the dentary was robust, the surangular was narrow and elongated, and the dentition is extremely well developed
Sinosauropteryx
Genus of Dinosaur (fossil)
large element composed of the predentary, dentary, coronoid, angular and surangular. The predentary (frontmost bone) was very pointed and elongated, having
Protoceratops
Extinct genus of dinosaurs
fragmentary right maxilla, a fragmentary right dentary, a fragmentary right surangular, lateral teeth, 11 middle-distal caudal vertebrae, both the left and right
Dryptosaurus
Daspletosaurin tyrannosaurid of the mid-Campanian
7) is based on a right maxilla, right jugal, right postorbital, right surangular, right quadrate, right laterosphenoid, left frontal, and both dentaries
Thanatotheristes
Genus of hadrosaurid ornithopod dinosaur
of the element. This is unique for the Hadrosauridae as a whole. The surangular bone of the lower jaw has only a short ascending branch, not reaching
Kamuysaurus
Genus of ceratopsid dinosaur from North America
parietals, and the lower jaws are limited to their upper rear bones, the surangulars and articulars. A fifth specimen is MOR 456.1, a subadult. None of the
Achelousaurus
Genus of theropod dinosaur from the Early Jurassic
foramen ran along the outer side of the dentary. The side surface of the surangular bone had a unique pyramidal process in front of the articulation with
Dilophosaurus
Genus of theropod dinosaurs
stronger bite force than its relatives. For example, there is a prominent surangular shelf on the lower jaw, indicating a strong adductor muscle for closing
Huadanosaurus
Extinct genus of dinosaurs
and the presence of a slender ribbed posterodorsal dentary process; the surangular bone has a forked anterior process for articulation with the posterodorsal
Herrerasaurus
Genus of ornithopod dinosaurs
skull bones (maxilla, nasal, and postorbital), mandibular elements (surangulars), four cervical (neck) vertebrae, a partial posterior (rear) dorsal (trunk)
Gongshuilong
Genus of Jurassic-aged theropod dinosaur
vertically grooved; the same combination is shown by Piatnitzkysaurus. The surangular has no bony shelf, or even ridge, on its outer side. There is laterally
Megalosaurus
Spinosaurid theropod dinosaur genus from the Early Cretaceous Period
lower jaw was deep, its rear upper surface consisting mainly of the large surangular bone, which articulated with the shallower angular bone below it. The
Irritator
Genus of dinosaurs from the Late Cretaceous Period
beak) was well developed and consisted mainly of the angular bone. The surangular was the largest bone of the lower jaw, which is usual in theropods. The
Gallimimus
Extinct genus of dicynodonts
mostly known from part of the dentary, with portions of the angular, surangular and splenial bones. The dentary is large and robust, with a rough, pitted
Taoheodon
Extinct genus of lizards
medial C-shaped excavation. Deep longitudinal sulcus on medial face of surangular. Cervicals with reniform central articulations and prominent zygosphenes
Plesiotylosaurus
Genus of extinct archosaurs
squamosal, left jugal, right pterygoid, right nasal, both splenials, left surangular, prearticular and angular, odontoid(?), axis, cervical, dorsal and caudal
Rauisuchus
Family of reptiles
longitudinal ridges Presence of a sharp ridge along ventral surface of angular Surangular with a longitudinal ridge on its dorsolateral surface Dorsal surface of
Gobiosuchidae
Extinct genus of tetrapod
posterodorsal process that extends into the lower jaw and overlapping the surangular. The angular and prearticular bones are long with the splenial almost
Aerosaurus
Carcharodontosaurid dinosaur genus from the Late Cretaceous
theropod similar to Giganotosaurus. By that time, an isolated tooth, a surangular, a caudal (tail) vertebra, a manual ungual, an incomplete pelvis, femora
Mapusaurus
Extinct genus of reptiles
coronoid process is rugose, low and broad transversely, thickened by the surangular on the lingual side of the jaw, possibly signifying the attachment of
Laganosuchus
Extinct genus of dinosaurs
continues to the rear into a high coronoid process. Between dentary, surangular and angular a rather tall triangular mandibular fenestra is present. The
Jiangjunosaurus
Extinct genus of reptiles
palatines and quadrates, the left jugal, the right pterygoid, quadratojugal, surangular, articular, squamosal and lacrimal, and fragments of the dentary. There
Polonosuchus
Camarasaurid sauropod dinosaur genus from Late Jurassic Period
side surface of the lower jaw had an oblique groove running from the surangular bone forwards and downwards to the lower margin of the dentary bone. Known
Camarasaurus
Extinct genus of reptiles
mandibular fenestra. Both angular and surangular extend to the top of the coronoid process, and the surangular forms much of the jaw articulation. The
Anatosuchus
Genus of reptiles
pits. The articular facet is broad. The surangular articulates the articular. The lateral side of the surangular is ornamented in the form of long ridges
Acaenasuchus
Genus of theropod dinosaurs
front half of the lower jaw, up to the boundary between the dentary and surangular, with the back half of the lower jaw having been broken away before fossilisation
Newtonsaurus
Extinct genus of reptiles
jaw) with a deep sulcus on the lateral surface; the dorsal margin of the surangular is slightly convex; and a longitudinal ridge along the posteroventral
Spectrovenator
Extinct genus of marine squamate reptiles
and the lower jaws include the dentary, splenial, coronoid, angular, surangular, and prearticluar-articular (like other squamates, the prearticular is
Tylosaurus
Extinct clade of reptiles
Frontal Jugal Postorbital Postfrontal Pareital Squamosal Quadrate Quadratojugal Surangular / Articular Prearticular Angular Dentary
Poposauroidea
Extinct genus of dinosaurs
anterior end, and a fossa is present on the surangular of the lower jaw, in front of the rear surangular foramen. Two other traits are possible autapomorphies:
Gobivenator
Genus of hadrosaurid dinosaur
almost complete skull, complete with lower jaws. CIC/P/147 only lacks the surangular and quadrate bones. Tlatolophus's skull is relatively tall. Its premaxilla
Tlatolophus
Extinct genus of dinosaurs
tubercles are present along the lateral shelf at the dorsal margin of the surangular.[citation needed] In 2024, Andrea Cau considered it likely that Banji
Banji
Extinct genus of tetrapodomorphs
due to a small number of skull and jaw features, most notably a lower surangular at the upper rear portion of the lower jaw. The type species, Neopteroplax
Neopteroplax
Extinct genus of dinosaurs
of each mandibular ramus, were long and curved. Ostrom noted that the surangulars likely formed most of the lateral surface of the mandible at the level
Tenontosaurus
Extinct subclass of reptiles
inner surface of the jaw) reach as far back as the coronoid process. The surangular bone, which forms the upper rear part of the jaw, is narrow and plate-like
Parareptilia
Extinct genus of large reptiles
just shy of actually participating in this region. The upper edge of the surangular is of the same height as the ridge that sits towards the back of the mandibular
Eoalligator
Extinct genus of reptiles
of the mandibular fenestra is mainly bound by the angular, while the surangular forms its upper border. Bones at the rear of the lower jaw have proportions
Prestosuchus
Extinct genus of lizards
bones. The sphenoid and basioccipital bones are fully fused, as are the surangular and prearticular bones. These skull characteristics are generally recognized
Helioscopos
Extinct genus of dinosaurs
The frontal bone shows a vertical ridge touching the lacrimal bone. The surangular in the lower jaw has a T-shaped cross-section. The shinbone has a vertical
Sinovenator
Extinct genus of reptiles
genus show two different forms of dentary-surangular sutures, either a v-shaped suture with the surangular cutting into the dentary from the side (type
Xinpusaurus
Extinct genus of reptile
by the tooth-bearing dentary, the angular, prearticular, and the fused surangular and articular. The dentary is long, slender and straight edged along its
Puercosuchus
Extinct genus of tetrapodomorphs
within the marginal row of teeth. On the lower jaw, Ventastega had a surangular pit line, which is present in most Sarcopterygians but unknown in any
Ventastega
either remains cartilaginous or disappears. In snakes, the articular, surangular, and prearticular bones have fused to form the compound bone. The mandible
Articular_bone
Extinct genus of synapsids
medial edge of the bone, the presence of teeth on the parasphenoid, and a surangular overlapping the posterodorsal tip of the dentary and excluding it from
Cotylorhynchus
Extinct genus of reptiles
the skull, including a left squamosal, nearly complete braincase, right surangular, and various fragments. Additionally, the specimen also includes the atlas
Diamantinasaurus
Extinct genus of reptiles
pterygoid, nearly complete right dentary, the right splenial, the right surangular, and isolated teeth, as well as the following postcranial bones: a partial
Nundasuchus
Extinct genus of reptiles
anterior tip of the rostrum to the posterior (rear) end of the damaged surangular, measures 70 cm (28 in) in length, and 41 cm (16 in) in height. Based
Barinasuchus
Extinct family of cynodonts
probainognathids also had an incipient contact between the squamosal and surangular bones. The canine teeth were large and labio-lingually compressed, and
Probainognathidae
Extinct genus of reptiles
considered part of the palate. The only preserved portion of the jaw is a left surangular, although a large right pterygoid fragment was originally considered an
Rugarhynchos
Extinct genus of reptiles
rostral bone, premaxilla, maxilla, jugal bone, quadratojugal, dentary, surangular, angular bone, the anterior section of the prefrontal bone, and the anterior
Mosaiceratops
Geologic formation in Alberta, Canada
Thanatotheristes T. degrootorum right maxilla, right jugal, right postorbital, right surangular, right quadrate, right laterosphenoid, left frontal, and both dentaries
Foremost_Formation
When present in the skull, MB was always found in the pterygoid and/or surangular. When present in the caudal sacrum, it is also present in the pygostyle
Medullary_bone
Extinct genus of dinosaurs
towards the back of the bone. A distinct fossa on the top surface of the surangular bone separates Jianianhualong from other troodontids. The angular bone
Jianianhualong
SURANGULAR
SURANGULAR
SURANGULAR
SURANGULAR
Boy/Male
American, British, English
From Denmark
Boy/Male
Indian, Punjabi, Sikh
Protector of the People
Girl/Female
American, Australian, British, English, French, Hebrew
Supplanter; Holder of the Heel; May God Protect; Abbreviation of Jaqueline which is the Feminine Form of Jacques
Boy/Male
Tamil
Winner
Female
Spanish
Spanish name ESTRELLA means "star."
Boy/Male
Tamil
Yagnakaya | யாகà¯à®¨à®¾à®•à®¾à®¯à®¾Â
Acceptor of all sacred & sacrificial offerings
Male
English
Anglicized form of Hebrew Gedalyah, GEDALIAH means "God is great." In the bible, this is the name of many characters, including the governor of Judah appointed by Nebuchadnezzar.
Boy/Male
Hindu, Indian, Marathi
Season of Goodness
Girl/Female
Biblical Hebrew Persian
A myrtle, joy.
Female
English
Feminine form of English Jett, JETTA means "jet (the mineral)."
SURANGULAR
SURANGULAR
SURANGULAR
SURANGULAR
SURANGULAR
a.
See Surangular.
a.
Above the angular bone; supra-angular; -- applied to a bone of the lower jaw in many reptiles and birds.
n.
The surangular bone.