Hadrosauridae

Hadrosauridae is a family of herbivorous ornithischian dinosaurs from the Late Cretaceous, known for broad, flattened snouts and diverse tooth batteries.

Ornithischia: Ornithischia is a major dinosaur group characterized by a backward-pointing pubis and including many herbivorous lineages. Hadrosauridae belongs to this major dinosaur lineage.
Hadrosaurid crest: A hadrosaurid crest is a cranial structure formed from the nasal and related bones in some members of the family. Crest shape distinguishes major lineages and may have amplified calls.
Iguanodontia: Iguanodontia is a group of ornithopod dinosaurs that includes hadrosaurids and their close relatives. Hadrosauridae emerged within this broader ornithopod radiation.
Maiasaura: Maiasaura is a hadrosaurid dinosaur known from nesting-site fossils in Montana. Its nesting grounds provide evidence about parental care and juvenile growth.
Hadrosauroid: Hadrosauroids are hadrosauriform dinosaurs that include Hadrosauridae and several closely related groups. This broader group places the family among its nearest relatives.
Lambeisaurus: Lambeosaurus is a crested hadrosaurid genus from the Late Cretaceous of North America. Its large hollow crest illustrates the elaborate forms found in lambeosaurines.
Hadrosauriformes: Hadrosauriformes is a group of ornithopod dinosaurs that includes hadrosauroids and more distant relatives. This group provides the evolutionary context for the family’s origins.
Parasaurolophus: Parasaurolophus is a hadrosaurid genus distinguished by a long, curved cranial crest. Its crest is a striking example of specialized hadrosaurid anatomy.
Dental battery: A dental battery is a tightly packed arrangement of replacement teeth that functions as a broad grinding surface. These batteries let hadrosaurs process tough plant material efficiently.
Edmontosaurus: Edmontosaurus is a large, mostly crestless hadrosaurid genus from the Late Cretaceous of North America. Its skull and tooth batteries show the family’s feeding anatomy without a hollow crest.

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