Abundance of large ornithopod dinosaurs in the El Castellar Formation (Hauterivian-Barremian, Lower Cretaceous) of the Peñagolosa sub-basin (Teruel, Spain)

Journal of Iberian Geology - Tập 48 - Trang 107-127 - 2022
Josué García-Cobeña1, Francisco J. Verdú1, Alberto Cobos1
1Fundación Conjunto Paleontológico de Teruel-Dinópolis/Museo Aragonés de Paleontología, Teruel, Spain

Tóm tắt

The El Castellar Formation (upper Hauterivian-lowermost Barremian, Lower Cretaceous) in the southwest of the Maestrat Basin (Spain) has yielded diverse dinosaur remains, mostly fragmentary bones. This study describes, morphometrically analyses, and compares several isolated postcranial fossils of large ornithopods from three new different sites in the municipality of Cabra de Mora (Peñagolosa sub-basin, Teruel Province). The fossils are attributed to styracosternan ornithopods, and some of them are related to the species Iguanodon galvensis, representing the oldest known record related to this taxon in the Iberian Peninsula. Moreover, this study verifies the hypothesis of the coexistence of at least two different styracosternans—a medium-sized form and a large-sized one—during the late Hauterivian-early Barremian in the Peñagolosa sub-basin. In addition, we formally describe the first dinosaur tracksite of the El Castellar Formation in this sub-basin. All ichnites are preserved as natural casts, and their trackmakers are likely to have been related to large styracosternans. Hence, the evidence provided here by both bones and tracks supports the idea that large ornithopods were the predominant dinosaurs in the wetlands of an extensive coastal plain.

Tài liệu tham khảo

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