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Animals & Nature
pterodactyl
fossil reptile group
Also known as: pterodactyloid
pterodactyl fossil
Category:
Animals & Nature
- Related Topics:
- pterosaur
- Quetzalcoatlus
- Pteranodon
- Pterodactylus
- Lacusovagus
pterodactyl, informal term for a subgroup of flying reptiles (Pterosauria) known from the Late Jurassic through Late Cretaceous epochs (163.5 million to 66 million years ago). Pterodactyls, or, more correctly, pterodactyloids, are distinguished from basal pterosaurs by their reduced teeth, tail, and fifth toe. Pterodactyloid metacarpals (palm bones) were more elongated than those of earlier pterosaurs, which instead had elongated phalanges (finger bones). There are also proportional differences in the skull, neck, pelvis, and wing bones. Pterodactyloid genera include Pterodactylus, a Late Jurassic form from Germany with a wingspan ranging from 50 cm (20 inches) to well over 1 metre ...(100 of 208 words)