Read the tooth.
Test the match.

Flat, broad triangular blade with coarse serrations and no lateral cusplets.

A strongly curved, can-opener profile with a deep outer notch and compound serrations.

Broad, heavily serrated upper tooth or a narrower lower tooth with finer serrations.

Long, slender smooth-edged cusp with a small cusplet on each side and a two-lobed root.

Slender, smooth-edged crown that often flexes or curves, with no side cusplets.

Triangular, strongly serrated crown that becomes increasingly oblique toward the jaw corners.

Narrow smooth-edged cusp with fine serrations mostly confined to the base on upper teeth.

Broad serrated upper tooth paired with a more pointed lower tooth serrated mainly near its tip.

Broad, serrated high-cusped upper teeth; narrower and more finely serrated lowers.

Lower teeth form a comb with one tall cusp and a row of progressively smaller cusps.

Small tooth with a central cusp flanked by several smaller cusplets on a broad base.

Relatively small, smooth, compressed blade that becomes oblique in lateral positions.

Tall, narrow, smooth-edged teeth with longitudinal grooves; front teeth are especially slender and fang-like.

Smooth, narrow lamnid tooth; generally broader and less strongly flexed than comparable shortfin-mako teeth.

Slender smooth central cusp with a small cusplet on each side and a strongly two-lobed root.

Smooth, pointed lamnid tooth with paired basal cusplets, closely resembling the porbeagle.

Minute, simple, backward-curving teeth arranged in hundreds of rows—tiny relative to the shark.

Very small, smooth, curved teeth with variable hooked or conical crowns.

Tiny, strongly curved hook-like teeth with a broad base, repeated in many rows.

Upper teeth are curved and finely serrated; lower teeth are narrow, straighter and often smoother.

Narrow, erect upper cusp with fine serrations and a broader base; lower teeth are slimmer and more upright.

Slim triangular teeth; uppers are finely serrated while lowers are narrow and usually smoother.

Broad, slightly oblique serrated upper teeth with narrow, erect, finely serrated lower teeth.

Upper teeth are oblique and finely serrated with a distinct notch; lower teeth are narrow and erect.

Triangular serrated upper tooth; narrow erect lower tooth with finer serrations.

Broad triangular, finely serrated upper teeth and narrow lower teeth with small serrations.

Small, narrow triangular teeth with fine serrations; upper teeth are broader than lowers.

Narrow central cusp flanked by small side cusplets; edges are smooth to weakly serrated.

Moderately oblique triangular crown with fine serrations and a deeply notched two-lobed root.

Small front teeth with short cusps grade into broader, flatter crushing teeth toward the jaw corners.

Small narrow upper teeth and broader, strongly oblique lower teeth that form a continuous cutting edge.

Wide lower tooth with a tall leading cusp followed by a comb of smaller cusps.

Three long, slender, backward-curving cusps on a broad base, forming a trident-like tooth.

Small central cusp bordered by two smaller cusplets on a compact broad base.

Pointed front teeth with lateral cusplets grade into broad, flattened molar-like rear teeth.

Large triangular lower teeth lock into a saw-like band; tiny upper teeth act mainly as hooks.

Smooth, pointed conical cusp on a broad base, similar in upper and lower jaws.

Long smooth central cusp with small lateral cusplets on a broad compact root.

Massive triangular crown, regular serrations, thick root and often a visible bourlette between crown and root.

Upper teeth are broad, dramatically hooked and coarsely serrated; lowers are narrower with hooked tips.

Broad, flat triangular crown like a white shark—but with completely smooth cutting edges.

Large smooth triangular main crown with a prominent cusplet on each side and a heavy root.

Compressed, triangular to oblique blade with strong serrations and a compact two-lobed root.

Large smooth-edged triangular lamniform tooth with a substantial bilobed root.

Low, broad crushing crown with ridges or bumps instead of a cutting blade.

One central cusp with several smaller lateral cusps arranged on a broad base.