Bernardino P. Pérez-Moreno's research while affiliated with Universidad Autónoma de Madrid and other places

Publications (28)

Research
Full-text available
Dantas, P.; Pérez-Moreno, B.; Chure, D.; Silva, C.M. da; Santos, V.F dos; Póvoas, L.; Cachão, M.; Sanz, J.L.; Pires, C.; Bruno, G.; Ramalheiro, G. & Galopim de Carvalho, A.M. (1999) - O dinossáurio carnívoro Allosaurus fragilis no Jurássico superior português. Al-Madan, Almada, 8: 23-28.
Article
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Not available.El análisis del registro fósil proporciona información sobre la historia evolutiva del aparato volador aviano y el origen y desarrollo del vuelo moderno. Existen dos hipótesis alternativas para explicar las complejas presiones de selección que configuraron la aparición del vuelo. La propuesta del corredor («desde el suelo hacia arriba...
Article
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Se revisa en detalle el registro fósil de crocoylomorfos del Cretácico Superior con el fin de examinar el reemplazamiento biótico que supuso la aparición de los miembros del clado Crocodylia. Para ello se ha estimado cronoestratigráficamente y por continentes el porcentaje de crocodylianos (cocodrilos modernos miembros del "crown-group" Crocodylia)...
Article
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The Late Cretaceous crocodylomorph record is revised in detail in order to examine the biotic replacement that characterises the appearance of the members of the Crocodylia clade. The percentages of crocodylian and non-crocodylian genera have been estima-ted by chronostratigraphic stage and by continent. The results show that there are a higher pro...
Article
We have discovered a mass of fossil bones from four juvenile birds at Las Hoyas in Cuenca, Spain, which show signs of having been digested. To our knowledge, this rare finding of an Early Cretaceous fossil of an apparently regurgitated pellet provides the first evidence that Mesozoic birds were prey animals.
Article
The species Allosaurus fragilis, from the Morrison Formation of North America (Kimmeridgian-Tithonian, Upper Jurassic), is one of the best known members of the Theropoda, the group including all predatory non-avian dinosaurs and birds. Here, we report on the first diagnostic theropod remains discovered from the Jurassic of the Iberian Peninsula. Th...
Article
The comparison of bone homology between the manus of an Early Cretaceous fossil crocodile and that of the extant speciesAlligator mississippiensissupports explicitly, for the first time, the hypothesis of carpal loss in crocodilian limb evolution. This hypothesis, based on a developmental model of the organization of the tetrapod limb, is in accord...
Article
The comparison of bone homology between the manus of an Early Cretaceous fossil crocodile and that of the extant species Alligator mississippiensis supports explicidy, for the first time, the hypothesis of carpal loss in crocodilian limb evolution. This hypothesis, based on a developmental model of the organization of the tetrapod limb, is in accor...
Article
The mineralized soft tissue of a dinosaur, only the second discovery of its kind, is reported from the Low er Cretaceous of Las Koyas, Spain. Cellular details of mineralized skin and muscle of Pelecanimimus are replicated in an iron carbonate. The outline of this ornithomimosaur is preserved by a phosphatized microbial mat that enshrouded the carca...
Article
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A feathered skeleton of a Lower Cretaceous enantiornithine bird from Spain indicates that the modified diapsid skull of modern birds did not evolve until late in their evolution: Basal birds retained an essentially primitive diapsid design. The fossil provides data clarifying long-standing debates on the cranial morphology of the basalmost bird, Ar...
Conference Paper
Early Cretaceous birds from Spain collected over the last decade have proved to be extremely illuminating, clarifying anatomical and functional aspects of the early evolution of birds. Five taxa are known from the continental Lower Cretaceous Konservat-lagerstatten of Spain: Nogueromis and a new from "La Pedrera" in the Sierra del Montsec (Upper Be...
Article
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AVIAN flight is one of the most remarkable achievements of vertebrate evolution, yet there is little evidence of its early phases. Specimens of Archaeopteryx shed important (albeit controversial) light on this evolutionary phenomenon, but the large morphological (and almost certainly functional) gap between Archaeopteryx and modern avians remained...
Article
Although famous as a fossil lagerstatte that has produced numerous well-preserved vertebrates, recent discoveries indicate that the lithographic limestones of Las Hoyas (Calizas de la Huerguina Formation) also contain vertebrate trackways. We herein report on at least two distinctive tetrapod track types tentatively assigned to crocodilians and to...
Article
Full-text available
THE Lower Cretaceous lithographic limestones from Las Hoyas (province of Cuenca, Spain) have yielded important vertebrate fossil remains. We report here a new specimen, the first ornithomimosaur theropod found in Europe. Pelecanimimus polyodon gen. et sp. nov., has some striking elements preserved, such as the hyoid, sternum and integumentary impre...

Citations

... The relatively long and irregular strides, and high pace angulations indicate that the animal used punting. It is notable that Farlow et al. (2018b) differentiated Albertasuchipes (McCrea et al., 2004) and a crocodyliform trackway from Las Hoyas site, Spain (De Gibert et al., 2016;Moratalla et al., 1995) from other crocodyliform "swim tracks", suggesting that they were made by bottom walking and possibly punting based on unusually long stride for its size. This type of locomotion would be much easier when the animal is fully submerged enough to push off the bottom and glide between footfalls than partially submerged due to the induced drag from the turbulence on the surface of the water. ...
... Mittelgroße und große Raubdinosaurier sind in der Unterkreide Europas absolute Raritäten -einige Beispiele sind vor allem aus England bekannt (z. B. Owen 1849-1884, Charig & Milner 1997, Hutt et al. 2001, Brusatte et al. 2008, Barker et al. 2021, sowie aus Frankreich (Allain 2005) und Spanien (Pérez-Moreno et al. 1993, Ortega et al. 2010. In Deutschland beschränken sich die bekannten Funde auf einen einzelnen Zahn ("Megalosaurus dunkeri") von Obernkirchen, sowie die Fährten großer Theropoden am Bückeberg und in den Rehburger Bergen (Niedersachsen s. z. ...
... The site is part of the La Huérguina Formation which preserves a freshwater lacustrine environment (Buscalioni and Fregenal-Martinez, 2010). This rich lithographic limestone locality produces plants, invertebrates, and complete, fully articulated vertebrates including birds, dinosaurs, pterosaurs, amphibians, turtles, crocodiles, and lizards (Sanz et al., 1988;Barbadillo, 1997, 1999;Ortego et al., 1999;Bolet and Evans, 2012). The locality is interpreted as a seasonal subtropical wetland ecosystem (Buscalioni and Fregenal-Martinez, 2010). ...
... Six free caudal vertebrae are identified, but the exact count of the caudals cannot be ascertained because of preservation (Fig. 3). The number of the free caudals varies among six to eight in known enantiornithines (Zhang & Zhou 2000;Sanz et al. 2002;O'Connor 2009). The free caudals are largely exposed in dorsal aspect, showing that the spinous processes are well developed, most pronounced on the preserved first and fourth caudals. ...
... Evidence of crustacean remains in the stomach of Eoalulavis indicated that they probably fed in the water column (Sanz et al. 1996). These large numbers, along with the diagnosis of Iberomesornis as a sub-adult (Sanz et al. 2002, Cubo et al. 2022, other young specimens in a possible pellet (Sanz et al. 2001) and the report of a hatchling (Knoll et al. 2018, Kaye et al. 2019Fig. 6) strongly indicate that Las Hoyas was their natural habitat, at least for breeding. ...
... Pombal, Portugal) has yielded a diverse collection of continental vertebrates (Malafaia et al. 2010) in which the most abundant remains belong to a theropod dinosaur attributed to Allosaurus. The description of a partial postcranial skeleton collected in this site as belonging to the typical North American species Allosaurus fragilis, triggered an intense debate about the relationships of the Late Jurassic dinosaur fauna from both sides of the North Atlantic Ocean (Pérez-Moreno et al. 1999). Despite being one of the most abundant and well-known theropod, Allosaurus still has a complex and not fully resolved taxonomic status. ...
... Nevertheless, in ornithosuchians, other basal archosaurs closely related to aetosaurs, a huge disproportion in size between the radiale and the intermedium is possible (Bonaparte 1971;Von Baczko and Ezcurra 2013). The carpus of modern crocodilians consist of both bony and cartilaginous elements (e.g., Buscalioni et al. 1997) and since the preserved carpal bones does not fit perfectly with the metacarpals and long bones, it is probable that also in S. olenkae the carpus could consist of cartilage elements or at last the amount of cartilage covering the bones was significant. ...
Reference: Appendix S10
... Berriasian crocodylomorph specimens of Europe mainly come from the Purbeck Limestone Group in England (see Salisbury, 2002;Andrade et al., 2011 and references therein); Cherves-de-Cognac and Angeac-Charente in France (Pouech et al., 2014;Martin et al., 2016;Rozada et al., 2020); the Rabekke Formation in Scandinavia (Schwarz et al., 2009); and the Obernkirchen Sandstone in Germany (Salisbury et al., 1999;. Although there is no record in the Berriasian of Europe, possible representatives of a clade of small crocodylomorphs, Gobiosuchidae, have been recovered in the Kimmeridgian-Tithonian of Portugal (Buscalioni et al., 1996;Fechner, 2004, 2008) and in the Barremian of Spain (Buscalioni, 2017), so their presence in the Berriasian cannot be ruled out. However, aside from age, the extremely small size (less than 35 cm in total length) of these gobiosuchids (Buscalioni, 2017) would dismiss them as the putative trackmakers. ...
... Las Hoyas has yielded over twenty thousand specimens recorded as plate and counter plate, usually preserving perfect details of their anatomy and tissues (Martín- et al. 2016). Approximately 70-80% of such record corresponds to almost complete organisms with articulated parts and detailed soft tissues (Briggs et al. 1997;Buscalioni and Fregenal-Martínez 2010). Animal remains are often preserved as complete and compressed, though some 3D preservation is not rare. ...
... Longusunguis Wang et al., 2014 and enantiornithines LP4450 and IVPP V12707). However, it is much more robust than that of some other enantiornithines (Sanz et al., 1997;Hu et al., 2020b;Zhou et al., 2008). The squamosal process of the postorbital of Jeholornis is short, less than half the length of the frontal process, and has a sharply tapered end, whereas this process is longer in Sapeornis and Archaeopteryx (Rauhut et al., 2018;Hu et al., 2020a). ...