Posterior to the diastema, each maxilla expands laterally and ventrally to accommodate a large caniniform
tooth (M1) (Figure 3A), differing from most of the basal pliosaurids and from S.
Besides above description, these specimens were also a species of Platycephaluswith the following combination of characters: upper jaw without large caniniform
He also characterized and introduced a terminology for the shapes of the teeth (caniniform
, villiform, papilliform) and gill rakers (short and tuberous, short with a broad base, long and cylindrical).
Diagnostic features separating it from other species of Protosuchus include the consistent presence of two caniniform
teeth (rather than one) in each dentary and the slender rather than deep anterior process of the jugal extending below the orbit (Clark 1986; Gow 2000).
The results showed that this teleost has conical and caniniform
teeth, with an orthodentin crown covered by an enameloid cap and a vascularised orthodentin in the root.
Diagnosis: A small, slender, round-headed goby with small eyes, long pointed caudal fin and lower 3-7 pectoral-fin rays free from membrane; second dorsal-fin rays always 1,10; anal fin rays always 1,10; pectoral-fin rays 19-21; longitudinal scales 22-25; TRB 7-9; side of head naked, predorsal scales 9-12, extending forward to behind eyes; eyes small and dorsolateral; interorbital broad and convex; jaws oblique, with small caniniform
teeth; head pores absent; reduced papillae pattern on head arranged in mostly longitudinal pattern, papillae often pointed, fleshy and may be on short raised ridges; eyes silver when alive, head and body colour pale yellowish-white, with six or seven indistinct dusky bands across nape and sides, and large oval black spot on posterior part of first dorsal fin.
Among sloths, the teeth are often referred to as being molariform or caniniform
, based on their shapes and locations along the toothrow.
They feature large mouths with cusped, conical and/or caniniform
teeth (BRITSKI et al., 1984, 1999), and are popularly known in the area as "peixe-cachorro".
MAIN CHARACTERS (based on the teeth): Teeth very long, caniniform
, without lateral crests, but with some lateral striae.
It has caniniform
teeth, with two pairs at the anterior of each jaw enlarged (Gomon 1974, Allen and Robertson 1994).
Twenty-two specimens collected from 10 localities in the Old Crow Basin, northern Yukon, include several bones that can be referred to Jefferson's ground sloth (Megalonyx jeffersonii) on the basis of the distinctive morphology of the upper and lower caniniform
The genus is characterized by a wide, short and flat snout and heterodont dentition without caniniform