Cheloniateca - Glossary of terms.

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Beak.

While some prehistoric turtles had teeth, all extant species have horny beaks made of keratin. The shape and size of the beak can reflect the type of diet.

Carapace

Cryptodira

Dorsal

Egg Tooth (or Egg Caruncle)

ESD

Keel

Keratin

Neustophagia

Nuchal

Plastron

Pleurodira

Scutes

Synapomorphy

Tympanum

Tubercles