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A new basal iguanodont from Spain: Proa valdearinnoensis



Andrew T. MCDONALD, Eduardo ESPILEZ, Luis MAMPEL, James I. KIRKLAND &
Luis ALCALA. 2012. An unusual new basal iguanodont (Dinosauria:
Ornithopoda) from the Lower Cretaceous of Teruel, Spain. Zootaxa 3595:
61-76 (21 Dec. 2012) 10 plates; 67 references

http://www.mapress.com/zootaxa/list/2012/3595.html

Abstract

We describe a new basal iguanodont, Proa valdearinnoensis, from the
Lower Cretaceous (lower Albian) Escucha Formation of Teruel Province,
Spain. The new taxon is known from abundant cranial and postcranial
material belonging to several individuals, and is distinguished by an
autapomorphy (predentary comes to a point at its rostral margin, with
divergent lateral processes) and a unique combination of characters.
Proa fills part of an otherwise lengthy temporal gap (early
Aptian-Santonian) in the European fossil record of basal iguanodonts.
A preliminary phylogenetic analysis places Proa in a polytomy with
Iguanodon bernissartensis and more derived iguanodontians
(Hadrosauroidea). Proa is more basal than the Valanginian
Hypselospinus and late Barremian-early Aptian Mantellisaurus,
suggesting a long ghost lineage leading to Proa.

Key Words: Proa valdearinnoensis gen. et sp. nov., Iguanodontia, Early
Cretaceous, Escucha Formation, Spain

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Jose Ignacio Ruiz-Omenaca
Museo del Jurasico de Asturias (MUJA)
E-33328 Colunga, Spain
www.dinoastur.com
www.museojurasicoasturias.com
www.aragosaurus.com
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