... bearing four small premaxillary teeth and a maximum of 15 larger maxillary teeth. The dentary tooth row is slightly shorter ... than the tooth row of the maxilla. The teeth are all laterally compressed and serrated, however unlike later Archosauriformes ... whereas the earliest archosauriforms had teeth fused to their bony sockets (ankylothecodont). The holotype material, UNIPAMPA ... The teeth are also unlike early archosauriform teeth in that they are loosely implanted in deep sockets (thecodont), ...

The premaxillary teeth lack denticles; those on the maxillary teeth are small. The maxillary tooth row is positioned at some ... The front dentary teeth are closely packed. The rear of the surangular is extraordinarily deep. Five sacrals are present, those ... The holotype individual of Sinovenator was about the size of a chicken, less than a metre long. In 2010, Gregory S. Paul ... The upper branch of the praemaxilla excludes the maxilla from the nostril. ...

... lack of anisodont premaxillary dentition; lack of diastema between maxillary and premaxillary alveolar rows; and cervical ... at the anterior dentary tooth to 27,685-48,728 N (2,823-4,969 kgf; 6,224-10,954 lbf) at the 36th dentary tooth pair. The ... 2013) diagnosed the species based on four autapomorphies of the holotype. The subrectangular sheet of the maxilla extends ... anisodont premaxillary dentition; diastema present between maxillary and premaxillary alveolar rows; premaxilla-parietal suture ...

In addition to its premaxillary, maxillary, and dentary teeth, Limnoscelis had additional palatal teeth on transverse flanges ... These flanges consisted of an anterior row of smaller blunt denticles, and a posterior row of larger teeth, with neither having ... with the ventral border of the external naris instead being formed by the maxilla. L. dynatis had smaller teeth, but had more ... the holotype CM 47653, and paratypes CM 47651 and CM 47652). These fossils, particularly the holotype, were referenced as ...

There are a total of 17 teeth and alveoli in the left maxilla and 16 in the right maxilla. The maxillary teeth are up to 25% ... The tooth row is positioned along the margins of the dentary. The ventral half of the mandible has a rough texture on the ... A sharp premaxillary beak is present as a result of the palatal portions of the premaxillae changing shape from the front end ... The holotype specimen, INBR21004, consists of a skull with lower jaws and predentary. The type specimen is currently housed at ...

It was a small rhynchosaurian diapsid with multiple rows of maxillary and dentary teeth, with each row consisting of only a ... The two premaxillary teeth are approximately twice the size of the maxillary teeth. The maxillary teeth are inset medially and ... had a zig-zag arrangement of teeth while the first and last four teeth are aligned in a row that is parallel to the maxilla. In ... SAM 5882, the holotype for Mesosuchus, consists of a partial rostrum, palate, braincase, lower jaws, sections of articulated ...

... but larger than any of the premaxillary teeth. The dentary teeth after the small 5th tooth are obscured by the maxillary ... while more posterior areas of the skull have tooth rows overlapping. The anterior caniniforms of the maxilla for instance ... The holotype specimen still remains in the type locality, with the local "Museo El Fósil" having been built around the fossil. ... The anterior mandibular teeth are large and interlocking with the premaxillary teeth. The largest of these is the 4th dentary, ...

The elongated, closely spaced dentary teeth are similar to those of the maxilla. Dentition is pleurodont, like other basal ... There are also three longitudinal rows of small teeth on each pterygoid bone, as well as a transverse row (which is not present ... The maxilla has a short facial process (upwards branch) and a uniquely long premaxillary process (front branch), conditions ... The 22+ maxillary teeth are characteristic as well, being conical, closely spaced, and bearing longitudinal striations at their ...

There are 12 maxillary teeth and 14 dentary teeth. These teeth extend further back in the skull than most silesaurids, as is ... The inner surface of the maxilla has a thick medial flange, which droops down to the tooth row as a smooth triangular blade. ... The holotype of Kwanasaurus is a partial silesaurid maxilla, DMNH EPV.65879. All other silesaurid maxillae recovered from the ... The front of the maxilla is similar to that of Lewisuchus and Silesaurus, with a triangular premaxillary facet and thick, sharp ...

These 6 rows conical peg like teeth occur on medially expanded on both maxillae and dentaries. Labidosaurikos specimens have ... Mandibular tooth rows rest between the maxillary tooth rows and have multiple contact points that could in motion pass one ... The anteroventrally directed premaxillae which contain five long premaxillary teeth that decrease in size posteriorly as is the ... The ability of the quadrate to slide antero-posteriorly over the articular propaliny however the holotype skull provided by ...

There is a gap called a diastema in the premaxillary tooth row, and a diastema in between the premaxillary and maxillary teeth ... The dentary bone of the lower jaw has ten teeth on either side, with two diastemata separating them. The forward-most teeth are ... where the holotype was found. C. paulistanus is known only from the holotype specimen MPMA 67-0001/00, an almost complete and ... The palatine bone in the roof of the mouth connects to the maxilla bone of the snout by a region of bone called the cuneiform ...

The tooth rows of Ornitholestes were short, with the dentary (lower) row being even shorter than the maxillary (upper) row, ... depicted the skull with only three premaxillary teeth remaining, much smaller than those illustrated by Osborn. Each maxilla ( ... The holotype skeleton (AMNH 619) was excavated in July 1900 in the Bone Cabin Quarry in Wyoming by an American Museum of ... main tooth-bearing bone in the upper jaw) contained ten teeth, and each dentary (tooth-bearing bone in the lower jaw) contained ...

... followed by 30 teeth in either of the only faintly ornamented maxillae and opposed by 31 dentary teeth. The tooth row is ... while the gap between the premaxillary and maxillary teeth is filled by the enlarged third and fourth caniniform dentary teeth ... Of the material, specimen PRC-11 (a complete skull and mandible) was chosen as the holotype. Much of the referred material ... The space between the two pairs of maxillary teeth for instance gives room to the first tooth of the lower jaw, ...

Most maxillary teeth are damaged in some way. Unfortunately, the preserved maxillary tooth rows are too short to determine if ... The teeth of these dentaries are identical to those found on the maxillae. In addition, the surface characteristics of the ... which have three or two premaxillary teeth, often with the first tooth being the largest tooth in the marginal dentition. The ... The holotype, GAA 00225-1, is a nearly complete right premaxilla. Several other specimens have been referred including: GAA ...

... the mandibular teeth are hidden by the teeth of the maxilla in the upper jaw. Eight maxillary teeth are preserved, and though ... in Panoplosaurus having a single wear facet per tooth which changes angulation across the tooth row, going from sub-vertical at ... a derived feature among nodosaurids where premaxillary teeth are sometimes present. The teeth of the mandible are hidden by ... Arbour and Philip J. Currie further restricted Panoplosaurus to just the holotype in 2016, as a result of uncertainties ...

... the tooth row of the lower jaw extends further to the back than that of the upper jaw. The premaxillary teeth are pointed and ... Scipionyx has five teeth in the premaxilla, seven in the maxilla and ten in the dentary of the lower jaw for a total of twenty- ... The maxillary teeth are flattened with denticles on their trailing edges. The second and fourth maxillary teeth are the largest ... Because the holotype is a hatchling of perhaps only a few days old, it is hard to determine the build of the adult animal but ...

The premaxillary teeth are followed by a pronounced notch, which likely received an enlarged dentary tooth. Very little of the ... From the fifth onward, the teeth are organized in a single, straight row of closely spaced alveoli. The overall shape of the ... The maxilla appears to be fused to the nasal bone, obscuring the suture between the two. Furthermore, the way the two elements ... When naming Atacisaurus, Astre declared A. glarea the type species, but in the following years the holotype had been lost and ...

The marginal tooth rows in mosasauroids like Clidastes are found on the premaxilla, maxilla and the dentary. On the dorsal ... Posteroventral portion of root of second premaxillary tooth not exposed on sutural surface with maxilla. Premaxillo-maxillary ... but are one of the best preserved and most complete mosasaurs collected from the state and is regarded as the generic holotype ... Premaxillary suture of maxilla smoothly keeled and paraIIels longitudinal axis of maxilla. Sixteen-18 teeth in maxilla. Median ...

The dentaries preserve 16 and 17 teeth respectively, with a total number of 18 teeth per dentary being suggested by Coria et al ... As in other peirosaurs, a knob-like structure can be found on the anterior contour of the premaxillary symphysis. The maxilla ... however it is estimated that Barrosasuchus may have had up to 13 maxillary teeth (10 of which were preserved) on each side of ... The holotype, MCF-PV 413, was found lying on its ventral side, the skull articulated with the remaining skeleton which ...

The two fragments of dentary and maxilla bear a few teeth which, although broken, had an ovoid section and were quite spaced, ... The second tooth is similar in shape, but much smaller. Neither have cusps. The two maxillary teeth have a general structure ... two being carried by an incomplete premaxilla and two others coming from a fragment of maxilla. The first premaxillary tooth is ... an isolated tooth (FMNH UR 942), a pair of articulated lower jaws having retained their tooth rows (FMNH UR 943), 2 median ...

... and ZLJT01 which is a juvenile individual that consists of a premaxillary fragment, an incomplete maxilla, a maxillary fragment ... that the anterior end of the jugal does not participate in the internal antorbital fenestra and that the maxillary tooth row is ... The holotype, IVPP V34, was found in the Lower Lufeng Formation, and consists of two maxillary (upper jaw) fragments, four ... a lacrimal, both frontals, both parietals, an incomplete braincase, an incomplete dentary, an atlantal intercentrum, two dorsal ...

... the teeth of the maxillae and dentaries no longer interdigitate, but shear against each other so that the teeth of the maxillae ... flat dorsal surface for contact with the overlapping frontal and maxilla. Posterior to the end of the premaxillary-maxillary ... A row from a pterygoid bone consists of five teeth and one isolated but associated tooth. The isolated tooth belongs to the ... The rationale for using syntypes rather than a single holotype comes from the fact that UALVP 51744, the most complete specimen ...

The first dentary tooth is elevated above the others. Of the postcranial skeletal several elements are known. The holotype ... with the 3rd premaxillary tooth being the largest. The maxilla of Mahajangasuchus are very low in lateral view, appearing ... The first 4 maxillary teeth were closely spaced with the 3rd being the largest. The 5th to 9th were smaller than the previous 4 ... suggesting that the dorsal armor did not consist of more than two rows of osteoderms. Historically Mahajangasuchus has ...

... presence of much larger premaxillary and anterior maxillary teeth and a much more restricted antorbital fossa on the maxilla. ... The dentary (tooth-bearing portion of the jaw) has an estimated 10 teeth, which are curved and serrated. The first tooth is ... On the other hand, serrations become more extensive on each tooth further down the tooth row. The nasal is smooth and likely ... Daemonosaurus is known from a single fossil, the holotype CM 76821, which consists of a skull, mandibles, an atlas bone, an ...

A 16 cm (6.3 in) diastema (gap in tooth row) was present between the last premaxillary and first maxillary tooth. Though no ... the third tooth being the largest. The frontmost three teeth of the maxilla were also preserved. The premaxillary teeth ... The dentary (tooth-bearing bone of the mandible) is unknown in Irritator, save for a possible remnant at the front of the ... the holotype appears partly crushed and broken on its lower margin, with some of the preserved teeth having been sectioned off ...

Two rows of foramina ran along the outer side of the dentary, just below the first seven dentary teeth (only one of the rows ... tooth-sockets). The premaxillary teeth were smaller than the hindmost teeth of the maxilla. There was a distinct constriction ... It was distinct among troodontids in having 22 teeth in each maxilla (in other genera the maxillary tooth count was either ... It was distinct among troodontids in having 22 teeth in each maxilla (though not all teeth were preserved in the holotype, ...

... diverging tooth row like we see in T. alexandrae. The wide, button-like teeth on the dentary are characteristic of all three, ... diastema present that separates the premaxillary from the maxillary teeth, and a deep lower jaw. The Thalattosauroidea are ... As noted by Merriam in 1905, the skull of the holotype, referred to as UCMP 9085, was preserved in four pieces. They were ... When aligned, the rostrum shape suggested dorsal curvature of the anterior end of the maxilla but ventral deflection in the ...

92 In the holotype, each half of the dentary, the tooth-bearing bone of the mandible, was equipped with 15 teeth, which are, ... in the holotype.: 92 Specimen MWC 1 merely showed 11 to 12 and specimen UMNH VP 5278 showed 12 teeth in each maxilla. The teeth ... 52 The maxillary bones of the upper jaw were lined with 15 blade-like teeth on each side in the holotype. The first eight of ... The premaxillary bones, which formed the tip of the snout, contained merely three teeth on each side, less than in most other ...

The premaxillary teeth were somewhat longer and recurved. To the rear, they gradually approach the form of the maxillary teeth ... and at least nineteen in the maxilla and sixteen in the dentary of the lower jaw. However, the number of maxillary and dentary ... There were three rows of these along each side of the torso. The scutes of the lowest, lateral, row were more conical, rather ... Owen had not indicated a holotype. In 1888, Richard Lydekker while cataloguing the NHMUK fossils, designated some of the ...

On each side of the upper jaws there were four premaxillary and twelve maxillary teeth, while the lower jaws were equipped with ... fifteen dentary teeth per side. The teeth had been described as being long and slender, as opposed to the very short teeth seen ... A similar double row was also present in the tail, formed there by highly modified caudal ribs, in front view protruding ... The holotype skeleton is displayed in the Argentine Museum of Natural Sciences, Bernardino Rivadavia; replicas can be seen in ...