page_title: Pararhabdodon
section_title: Sant Romà d’Abella material
hierarchical_section_title: Pararhabdodon / History and assigned material / Sant Romà d’Abella material
caption_attribution_description: English: http://www.quagga.cat/Projectes/Reconstruccio/Hadrosaure-pararhabdodon-isonensis/4
context_page_description: Pararhabdodon is a genus of tsintaosaurin hadrosaurid dinosaur, from the Maastrichtian-age Upper Cretaceous Tremp Group of Spain. The first remains were discovered from the Sant Romà d’Abella fossil locality and assigned to the genus Rhabdodon, and later named as the distinct species Pararhabdodon isonensis in 1993. Known material includes assorted postcranial remains, mostly vertebrae, as well as maxillae from the skull. Specimens from other sites, including remains from France, a maxilla previously considered the distinct taxon Koutalisaurus kohlerorum, an additional maxilla from another locality, the material assigned to the genera Blasisaurus and Arenysaurus, and the extensive Basturs Poble bonebed have been considered at different times to belong to the species, but all of these assignments have more recently been questioned.
  Initially, the material was thought to belong to a rhabdodontid dinosaur, or some other similar type of primitive iguanodontian. Later discoveries of additional material revealed its true nature as a hadrosaur.
context_section_description: Excavation of specimens that would later be used to erect Pararhabdodon began in Spring 1985, at the Sant Romà d’Abella (SRA) locality (in the Pyrenees near Isona, Lleida, Spain) of the Talarn Formation in the Tremp Group. In 1987, Casanovas-Cladellas et al. described remains of an ornithopod from Catalonia, including a cervical vertebra, some partial dorsals, a humerus, and a fragmentary scapula, as Rhabdodon sp. New remains from this site, excavated in 1990, brought about a reconsideration of the material, and Casanovas-Cladellas and colleagues named it as the new genus and species Pararhabdodon isonense in 1993. At the time, it was still considered to be a rhabdodont-like basal iguanodont, hence the name; isonense was in reference to Isona.
  Additional material from the type locality was collected in 1994 - including two maxillae, two dorsal vertebrae, a complete sacrum, two fragmentary ribs, and a partial ischium - and the species name was corrected to isonensis in 1997 by Laurent et al.. New material, most importantly cranial and mandibular elements (those from the skull) led to Casanovas-Cladellas' team re-classifying it as a hadrosaurid as opposed to a basal iguanodont. In 1999 it was more specifically identified as a lambeosaurine hadrosaur, in a paper again by Casanovas-Cladellas et al.. This made it the first member of the subfamily from the continent, and the second valid hadrosaur, preceded by Telmatosaurus and the dubious Orthomerus.
  In total, known material from the type locality includes: a left and a right maxilla; five cervical, five dorsal, and one caudal vertebra; a sacrum; fragmentary rib bones; one end of the right ischium; a fragment of the left scapula, an ulna and a humerus. All of this material was excavated from a 4 metres (13 ft) by 2.5 metres (8.2 ft) surface, and it is thought to have belonged to a single individual. The holotype is a nearly complete caudally located cervical vertebra (a cervical vertebra located near the base of the neck), specimen number IPS SRA-1. Another cervical, a humerus, and an ulna were designated the paratype specimens.
caption: Restoration
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