Icnitas de dinosaurios en el Jurásico Superior de La Puebla de Valverde (Teruel, España)
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Abstract
Se describen dos nuevos yacimientos de icnitas de dinosaurios en
el municipio de La Puebla de Valverde. Las huellas han sido halladas
aisladas tanto in situ como ex situ en facies siliciclásticas de la Formación
Villar del Arzobispo (Jurásico Superior). El hecho más distintivo del área
de estudio es la gran diversidad de morfotipos de icnitas tridáctilas. Se
han identificado huellas de ornitópodo de tamaño pequeño y grande,
y huellas de terópodo de tamaño medio y grande. Las icnitas se encuentran conservadas tanto como epirrelieves cóncavos como hiporrelieves convexos con diversos grados de preservación. Algunas presentan
características extramorfológicas (ángulos interdigitales altos, paredes
colapsadas, falta de algún dedo) debido a las condiciones del sustrato
durante la formación, lo cual dificulta la asignación icnotaxonómica.
Una de las huellas de terópodo de tamaño medio mejor conservadas,
clasificada como cf. Kayentapus isp., es diferente a otros icnotaxones
identificados previamente en la cuenca del Maestrazgo. Además las
huellas terópodas grandes y gráciles son similares a Megalosauripus cf.
transjuranicus y las huellas ornitópodas grandes a Iguanodontipodidae
Two new dinosaur tracksites are described in La Puebla de Valverde municipality. The footprints were found isolated in situ and ex situ in siliciclastic facies included in the Villar del Arzobispo Formation (Late Jurassic). The most distinctive fact about the study area is the large diversity of tridactyl track morphotypes. Small and large ornithopod footprints, and medium and large theropod footprints have been identified. These ichnites are preserved either as concave epireliefs and convex hiporeliefs with different preservation grades. Some of them show extramorphological features (high interdigital angles, collapsed walls, missing digits) due to the substrate conditions during the registration, which complicates the ichnotaxonomic assignment. The best-preserved medium-sized theropod footprint, classified as cf. Kayentapus isp., is different to the previously identified ichnotaxa in the Maestrazgo basin. In addition, large and gracile theropod tracks are similar to Megalosauripus cf. transjuranicus and large ornithopod tracks to Iguanodontipodidae
Two new dinosaur tracksites are described in La Puebla de Valverde municipality. The footprints were found isolated in situ and ex situ in siliciclastic facies included in the Villar del Arzobispo Formation (Late Jurassic). The most distinctive fact about the study area is the large diversity of tridactyl track morphotypes. Small and large ornithopod footprints, and medium and large theropod footprints have been identified. These ichnites are preserved either as concave epireliefs and convex hiporeliefs with different preservation grades. Some of them show extramorphological features (high interdigital angles, collapsed walls, missing digits) due to the substrate conditions during the registration, which complicates the ichnotaxonomic assignment. The best-preserved medium-sized theropod footprint, classified as cf. Kayentapus isp., is different to the previously identified ichnotaxa in the Maestrazgo basin. In addition, large and gracile theropod tracks are similar to Megalosauripus cf. transjuranicus and large ornithopod tracks to Iguanodontipodidae







