Persona: Narváez Padilla, Iván
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inarvaez@ccia.uned.es
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0000-0003-0114-7058
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Narváez Padilla
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Publicación The biota of the Upper Cretaceous site of “Lo Hueco” (Cuenca, Spain)(Universidad Complutense de Madrid, 2015-03-25) Ortega Coloma, Francisco Javier; Bardet, N.; Barroso-Barcenilla, F.; Callapez, P.M.; Cambra-Moo, O.; Daviero- Gómez, V.; Díez Díaz, V; Domingo, L.; Elvira, A.; Escaso Santos, Fernando; García-Oliva, M.; Gómez, B.; Houssaye, A.; Knoll, F.; Marcos-Fernández, F.; Martín, M.; Mocho, P.; Narváez Padilla, Iván; Pérez García, Adán; Peyrot, D.; Segura, M.; Serrano, H.; Torices, A.; Vidal, D.; Sanz, J.L.; Ministerio de Ciencia e InnovaciónThe Late Cretaceous (Campanian-Maastrichtian) fossil site of Lo Hueco was recently discovered close to the village of Fuentes (Cuenca, Spain) during the cutting of a little hill for installation of the railway of the Madrid-Levante high-speed train. To date, it has yielded a rich collection of well-preserved Cretaceous macrofossils, including plants, invertebrates, and vertebrates. The recovered fossil assemblage is mainly composed of plants, molluscs (bivalves and gastropods), actinopterygians and teleosteans fishes, amphibians, panpleurodiran (bothremydids) and pancryptodiran turtles, squamate lizards, eusuchian crocodyliforms, rhabdodontid ornithopods, theropods (mainly dromaeosaurids), and titanosaur sauropods. This assemblage was deposited in a near-coast continental muddy floodplain crossed by distributary sandy channels, exposed intermittently to brackish or marine and freshwater flooding as well as to partial or total desiccation events. The Konzentrat-Lagerstatt of Lo Hueco constitutes a singular accumulation of fossils representing individuals of some particular lineages of continental tetrapods, especially titanosaurs, eusuchians and bothremydid turtles. In the case of the titanosaurs, the site has yielded multiple partial skeletons in anatomical connection or with a low dispersion of their skeletal elements. A combination of new taxa, new records of taxa previously known in the Iberian Peninsula, and relatively common taxa in the European record compose the Lo Hueco biota. The particular conditions of the fossil site of Lo Hueco and the preliminary results indicate that the analysis of the geological context, the floral and faunal content, and the taphonomical features of the site provide elements that will be especially useful for reassess the evolutionary history of some lineages of European Late Cretaceous reptiles.Publicación Upper Jurassic sauropod record in the Lusitanian Basin (Portugal): Geographical and lithostratigraphical distribution(Coquina Press, 2017-05-01) Mocho, Pedro; Royo-Torres, Rafael; Escaso Santos, Fernando; Malafaia, Elisabete; Miguel Chaves, Carlos de; Narváez Padilla, Iván; Pérez García, Adán; Pimentel, Nuno; Silva, Bruno C.; Ortega Coloma, Francisco JavierSauropod remains are relatively abundant in the Upper Jurassic sediments of the Lusitanian Basin. These dinosaurs are recorded in several sub-basins formed during the third rifting episode related to the evolution of the Lusitanian Basin. The Kimmeridgian-Tithonian sedimentary sequence is dominated by siliciclastic deposits, indicating a continental environment. Sauropods are present all along this mainly terrestrial sequence, being recorded in the Alcobaça, Praia da Amoreira-Porto Novo, Sobral, Freixial, and the Bombarral Formations, ranging from the early Kimmeridgian to the late Tithonian. Sauropoda is the most abundant dinosaur group in the Upper Jurassic fossil record of the Lusitanian Basin and is especially well-represented in the Bombarral and Turcifal Sub-basins. Several new specimens, so far unpublished, are reported here. The sauropod fauna identified mainly includes non-neosauropod eusauropods (including turiasaurs), diplodocoids (some specimens with diplodocine affinities), basal macronarians (non-camarasaurids and camarasaurids), and titanosauriforms (some specimens with brachiosaurid affinities). Macronarians, turiasaurs and diplodocoids are generally present along the entire Kimmeridgian-Tithonian continental to transitional deposits of the Lusitanian Basin, but the known fossil record for some more exclusive groups such as camarasaurids, brachiosaurids, and diplodocines, present a more restricted stratigraphic distribution.Publicación A new dryosaurid ornithopod (Dinosauria, Ornithischia) from the Late Jurassic of Portugal(Taylor & Francis, 2014-09-09) Escaso Santos, Fernando; Ortega Coloma, Francisco Javier; Dantas, Pedro; Malafaia, Elisabete; Silva, Bruno; Gasulla, José M.; Mocho, Pedro; Narváez Padilla, Iván; Sanz, Jose L.A new dryosaurid ornithopod, Eousdryosaurus nanohallucis, gen. et sp. nov., is described here based on a single specimen from the Late Jurassic Alcobaça Formation of Portugal. Eousdryosaurus nanohallucis is distinguished from all other dryosaurids by eight autapomorphic features and an unique combination of characters, some of which are also shared by other dryosaurids. Eousdryosaurus is linked with Dryosauridae, because the fourth trochanter is proximally placed and widely separated from the scar for the insertion of the M. caudifemoralis longus, which is restricted to the medial surface of the femoral shaft. Phylogenetic analysis nests Eousdryosaurus in an unresolved polytomy at the base of Dryosauridae together with Callovosaurus, Dryosaurus, and Kangnasaurus. The complete pes of Eousdryosaurus, which has a phalangeal formula of 1-3-4-5-0, supports the putative autapomorphic reduction of the dryosaurid pes that also occurs in parallel in more derived ornithopodsPublicación A new Crocodyloidea from the middle Eocene of Zamora (Duero Basin, Spain)(Wiley, 2024-03-05) Narváez Padilla, Iván; Celis, Ane de; Escaso Santos, Fernando; Martín de Jesús, Santiago; Pérez García, Adán; Ortega Coloma, Francisco JavierThe eusuchian crocodyliforms recorded in the Eocene levels of the Spanish Duero Basin belong to three lineages: Planocraniidae, with the species Duerosuchus piscator; Alligatoroidea, represented by several specimens of the genus Diplocynodon; and Crocodyloidea, which includes several specimens traditionally attributed to Asiatosuchus. The genus Asiatosuchus, established in 1940 based on a middle Eocene species from Mongolia, has subsequently served as a wastebasket taxon for Paleogene remains belonging to several species, not only from Asia but also belonging to the European and North American records. Many of these species are known by highly fragmentary remains, sharing the presence of characters such as a flat and triangular skull, and long symphyses in the lower jaw, recognized as characteristic for the crocodyloids. In addition to isolated cranial remains, among the material traditionally attributed to Asiatosuchus at the Duero Basin stands out a nearly complete skull and a left mandible, from the middle Eocene area of Casaseca de Campeán (Zamora Province). The present study analyses in detail these specimens, previously reported during the 1980s, but analyzed in a very preliminary way. They are included for the first time in a phylogenetic analysis to establish the systematic position of this Spanish form. The results confirm that it corresponds to a new species of basal crocodyloid, defined here as Asiatosuchus oenotriensis sp. nov.Publicación New crocodyliforms from southwestern Europe and definition of a diverse clade of European uppermost Cretaceous basal eusuchians(Public Library of Science, 2015-11-04) Narváez Padilla, Iván; Brochu, Christopher A.; Escaso Santos, Fernando; Pérez García, Adán; Ortega Coloma, Francisco Javier; Ministerio de Economía y Competitividad. España; US National Science FoundationThelate Campanian-early Maastrichtian site of Lo Hueco (Cuenca, Spain) has provided a set of well-preserved crocodyliform skull and lower jaw remains, which are described here and assigned to a newbasaleusuchiantaxon, Lohuecosuchus megadontos gen. et sp. nov. The reevaluation of a complete skull from the synchronous site of Fox-Amphoux (Department of Var, France) allows us to define a second species of this new genus. Phylogenetic analysis places Lohuecosuchus in a clade exclusively composed by European Late Cretaceous taxa. This new clade, defined here as Allodaposuchidae, is recognized as the sister group of Hylaeochampsidae, also comprised of European Cretaceous forms. Allodaposuchidae and Hylaeochampsidae are grouped in aclade identified as the sister group of Crocodylia, the only crocodyliform lineage that reaches our days. Allodaposuchidae shows avicariant distribution pattern in the European Late Cretaceous archipelago, with several Ibero-Armorican forms more closely related to each other than with to Romanian Allodaposuchus precedens.Publicación The effect of the age uncertaninty of the Adamantina Formation (Bauru Group) on notosuchian palaeodiversity dynamics (Crocodyliformes, Notosuchia)(Instituto de Estudios Riojanos, 2019-01) Celis, Ane de; Narváez Padilla, Iván; Ortega Coloma, Francisco JavierLos notosuquios conforman un clado de Crocodyliformes que cuenta con un amplio registro gondwánico, especialmente en los depósitos cretácicos de América del Sur. En esta comunicación se presenta una base de datos construida a partir de presencias registradas de especies de notosuquios. El análisis de los datos, tanto en bruto como corregidos mediante el método ‘Shareholder quorum subsampling’, ha permitido obtener estimaciones de paleodiversidad. De este modo, se pudo establecer que la paleodiversidad del grupo se incrementó inicialmente hacia finales del Cretácico Inferior, alcanzando un máximo durante el Cretácico Superior de acuerdo con estudios anteriores. Sin embargo, los nuevos resultados muestran que el momento en el que se produce el citado máximo, así como su magnitud, dependen de la edad atribuida a la Formación Adamantina (Campaniense-Maastrichtiense o Turoniense-Santoniense).Publicación A New Sail-Backed Styracosternan (Dinosauria: Ornithopoda) from the Early Cretaceous of Morella, Spain(Public Library of Science, 2015-12-16) Gasulla, José Miguel; Escaso Santos, Fernando; Narváez Padilla, Iván; Ortega Coloma, Francisco Javier; Sanz, José LuisAnewstyracosternan ornithopod genus and species is here described based on a partial postcranial skeleton and an associated dentary tooth of a single specimen from the Arcillas deMorella Formation (Early Cretaceous, late Barremian) at the Morella locality, (Castellón, Spain). Morelladon beltrani gen. et sp. nov. is diagnosed by eight autapomorphic features. Theset of autapomorphies includes: very elongated and vertical neural spines of the dorsal vertebrae, midline keel on ventral surface of the second to fourth sacral vertebrae restricted to the anterior half of the centrum, a posterodorsally inclined medial ridge on the postacetabular process of the ilium that meets its dorsal margin and distal end of the straight ischial shaft laterally expanded, among others. Phylogenetic analyses reveal that the new Iberian form is more closely related to its synchronic and sympatric contemporary European taxa Iguanodon bernissartensis and Mantellisaurus atherfieldensis, known from Western Europe, than to other Early Cretaceous Iberian styracosternans (Delapparentia turolensis and Proavaldearinnoensis). The recognition of Morelladon beltrani gen. et sp. nov. indicates that the Iberian Peninsula was home to a highly diverse medium to large bodied styracosternan assemblage during the Early Cretaceous.Publicación New Iguanodon bernissartensis Axial Bones (Dinosauria, Ornithopoda) from the Early Cretaceous of Morella, Spain(MDPI, 2022-01-18) Gasulla, José Miguel; Escaso Santos, Fernando; Narváez Padilla, Iván; Sanz, José Luis; Ortega Coloma, Francisco JavierIguanodon bernissartensis is the most frequently and widely cited styracosternan ornithopod in Western Europe during the Early Cretaceous, although some of these assignments likely need to be revised to establish the true distribution of the taxon. Here, we describe a new specimen of I. bernissartensis from the upper Barremian of the Iberian Peninsula. Based on the unique combination of shared characters, the new specimen from the Arcillas de Morella Formation at Morella locality (Castellón, Spain) can be confidently referred to Iguanodon bernissartensis. These characters include parallel-sided anterior and posterior margins of the dorsal and the caudal neural spines as well as the presence of a ventral keel in the posterior dorsal centra and a broad ventral sulcus in the midline of the central surface of the most posterior sacral vertebrae. This new evidence of Iguanodon bernissartensis reinforces the knowledge about styracosternan ornithopods as the most frequently recorded dinosaur group in the Arcillas de Morella Formation.Publicación A new spinosaurid theropod (Dinosauria: Megalosauroidea) from the upper Barremian of Vallibona, Spain: Implications for spinosaurid diversity in the Early Cretaceous of the Iberian Peninsula(ELSEVIER, 2020-02-01) Malafaia, Elisabete; Gasulla, José Miguel; Escaso Santos, Fernando; Narváez Padilla, Iván; Sanz, Jose Luis; Ortega Coloma, Francisco JavierA new medium-sized theropod dinosaur from the Arcillas de Morella Formation (upper Barremian) in Vallibona (Castellón, Spain) is described based on a partial skeleton. Vallibonavenatrix cani, gen. et sp. nov., is diagnosed by five autapomorphies: moderately high dorsal neural spines relative to the centrum height, the presence of deep pleurocoelous fossae and pneumatic foramina in the sacral vertebrae, a strongly pneumatic ilium with large internal cameras, the presence of a broad and flat platform on the ventromedial surface of the postacetabular blade of the ilium, and the strong ventral torsion of the ischium diaphysis. Phylogenetic analysis recovered Vallibonavenatrix cani as a spinosaurid megalosauroid and revealed that the new Iberian form is more closely related to Gondwanan spinosaurines, such as Spinosaurus, Irritator or Angaturama and the Asian taxon Ichthyovenator than it is to its synchronic contemporary European taxon Baryonyx walkeri. The Gondwanan or Asian affinities of Vallibonavenatrix indicate a complex palaeobiogeographic pattern and may be interpreted simultaneously as evidence for contact between Europe and North Africa and between Europe and Asia before the Aptian. This specimen is currently the most complete evidence of a spinosaurid theropod known in the fossil record of the Iberian Peninsula.Publicación El taller de restauración paleontológica de Cuenca como herramienta para la puesta en valor del patrimonio paleontológico castellano-manchego(Instituto de Estudios Riojanos, 2019-01) Martínez Monleón, Mario A; Lorenzo Vélez, Luna; Barco Monreal, Enrique; Buj de la Iglesia, Begoña; García Bustos, Ana; Martín Román, Celia; Cocera Zamora, José Manuel; Gómez de Vírgala, Ana; Gutiérrez Maestro, Javier; Mialdea, Marta; Narváez Padilla, IvánEl yacimiento de Lo Hueco fue descubierto en 2007 en la localidad de Fuentes (Cuenca) y durante la intervención paleontológica de urgencia llevada a cabo se recuperaron cerca de diez mil restos que en su mayor parte se encuentran depositados en dependencias del Museo de Paleontología de Castilla-La Mancha. Desde 2013, se llevan celebrando de forma anual talleres de empleo cuyo objetivo principal es la formación en restauración paleontológica de personas con estudios superiores relacionados con esta área. Entre los objetivos derivados de estos talleres está la preparación del material fósil de Lo Hueco y la divulgación y puesta en valor del patrimonio paleontológico castellano-manchego. En la presente comunicación se expondrán los trabajos realizados durante el “Taller de Restauración del Patrimonio Paleontológico de los Yacimientos de Cuenca” de 2018 en los tres ámbitos mencionados (formación, preparación y divulgación), destacando la preparación de cerca de un centenar de piezas, la visita de alrededor de 400 personas a las instalaciones donde se llevaron a cabo los trabajos de restauración, y la organización de un ciclo de conferencias de temática paleontológica celebradas en el Museo de Paleontología de Castilla-La Mancha.