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What is Hadrosauriformes?

Pronunciation: had-row-sor-uh-forms
Author: Paul Sereno
Year: 1997
Etymology: Hadrosaurus forms
Locomotion: Primarily bipedal
Synonyms: Iguanodontoidea
Definition:
The least inclusive clade containing Iguanodon bernissartensis and Parasaurolophus walkeri.
About

Hadrosauriformes was coined by Paul Sereno in 1997 to replace Iguanodontoidea, because having one clade (Iguanodontoidea) contain another one (Hadrosauroidea) with the same suffix ("-oidea" was attached to a superfamily on the now defunct Linnaean ranking system) was just silly. Silly and confusing.

Hadrosauriformes marks the point where ornithopods lost their thumbs, but gained extra teeth and dental batteries, and "duck bills".

Etymology
Hadrosauriformes is derived from the Greek "hadros" (heavy, bulky, sturdy, powerful) and "sauros" (lizard)—for Hadrosaurus (co-anchor of a more exclusive hadrosauriforme family, Hadrosauridae), and the Latin "formes" (form or shaped).
Relationships
References
Albert Prieto-Marquez (2008) "Phylogeny and historical biogeography of hadrosaurid dinosaurs".
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To cite this page:
Atkinson, L. "DinoChecker FAQ entry :: What is Hadrosauriformes?"
http://www.dinochecker.com/dinosaurfaqs/what-is-hadrosauriformes›. Web access: 20th Oct 2017.
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