Cenomanian vertebrates from Algora (central Spain): New data on the establishment of the European Upper Cretaceous continental faunas

Pérez‐García, Adán; Bardet, Nathalie; Fregenal-Martı́nez, Marı́a Antonia; Jiménez, M. Martín; Mocho, Pierre; Narváez, Iván; Hernández, Angélica Torices; Vullo, Romain; Ortega, Francisco

doi:10.1016/j.cretres.2020.104566

Cited by 11 publications

(7 citation statements)

References 71 publications

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“…In addition to Camarillasaurus , the presence of ceratosaurians in the Late Jurassic of Portugal has been suggested on the basis of isolated teeth 53 , 54 and dental remains of cf. Abelisauridae have been indentified in the Cenomanian of Algora 55 ; and the presence of Genusaurus sisteronis has been established in the Albian of Provence in France 56 .…”

Section: Resultsmentioning

confidence: 99%

Fast-running theropods tracks from the Early Cretaceous of La Rioja, Spain

Navarro-Lorbés

Ruíz

Díaz‐Martínez

et al. 2021

Sci Rep

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Theropod behaviour and biodynamics are intriguing questions that paleontology has been trying to resolve for a long time. The lack of extant groups with similar bipedalism has made it hard to answer some of the questions on the matter, yet theoretical biomechanical models have shed some light on the question of how fast theropods could run and what kind of movement they showed. The study of dinosaur tracks can help answer some of these questions due to the very nature of tracks as a product of the interaction of these animals with the environment. Two trackways belonging to fast-running theropods from the Lower Cretaceous Enciso Group of Igea (La Rioja) are presented here and compared with other fast-running theropod trackways published to date. The Lower Cretaceous Iberian fossil record and some features present in these footprints and trackways suggest a basal tetanuran, probably a carcharodontosaurid or spinosaurid, as a plausible trackmaker. Speed analysis shows that these trackways, with speed ranges of 6.5–10.3 and 8.8–12.4 ms−1, testify to some of the top speeds ever calculated for theropod tracks, shedding light on the question of dinosaur biodynamics and how these animals moved.

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Section: Resultsmentioning

confidence: 99%

Fast-running theropods tracks from the Early Cretaceous of La Rioja, Spain

Navarro-Lorbés

Ruíz

Díaz‐Martínez

et al. 2021

Sci Rep

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show abstract

“…In addition to Camarillasaurus, the presence of ceratosaurians in the Late Jurassic of Portugal has been suggested on the basis of isolated teeth 50,51 and dental remains of cf. Abelisauridae have been indenti ed in the Cenomanian of Algora 52 ; and the presence of Genusaurus sisteronis has been established in the Albian of Provence in France 53 .…”

Section: Possible Trackmakersmentioning

confidence: 99%

Fast-Running Theropods Tracks From the Early Cretaceous of La Rioja, Spain

Navarro-Lorbés

Ruíz

Díaz‐Martínez

et al. 2021

Preprint

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Theropod behaviour and biodynamics are intriguing questions that paleontology has been trying to resolve for a long time. The lack of extant groups with similar bipedalism has made it hard to answer some of the questions on the matter, yet theoretical biomechanical models have shed some light on the question of how fast theropods could run and what kind of movement they showed. The study of dinosaur tracks can help answer some of these questions due to the very nature of tracks as a product of the interaction of these animals with the environment. Two trackways belonging to fast-running theropods from the Lower Cretaceous Enciso Group of Igea (La Rioja) are presented here and compared with other fast-running theropod trackways published to date. The Lower Cretaceous Iberian fossil record and some features present in these footprints and trackways suggest a basal tetanuran, probably a carcharodontosaurid or spinosaurid, as a plausible trackmaker. Speed analysis shows that these trackways, with speed ranges of 6.5−10.3 and 8.8−12.4 ms-1, testify to some of the top speeds ever calculated for theropod tracks, shedding light on the question of dinosaur biodynamics and how these animals moved.

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“…The Cenomanian (lowermost Late Cretaceous) is a key stage to analyze the faunal turnover evidenced between the faunas of the Lower Cretaceous and those of the uppermost Cretaceous [ 1 ]. In this context, the Spanish Algora fossil site (Guadalajara Province, Central Spain; Figure 1 A), deposited at the uppermost middle to lowermost upper Cenomanian, represents the first European site with a high concentration of macrovertebrate remains from the Cenomanian (see Pérez-García et al [ 2 ] and references therein). Thus, the relatively poorly known faunal assemblages found in the Cenomanian of this continent, whose knowledge has been significantly improved thanks to the finds in this Spanish site, are currently identified as more akin to those found in the uppermost Cretaceous than to those of the Early Cretaceous.…”

Section: Introductionmentioning

confidence: 99%

“…The documented vertebrate faunal assemblage in the Algora Cenomanian site is represented by an osteichthyan member corresponding to Obaichthys africanus Grande, 2010 [ 3 ]; a stem turtle attributable to the helochelydrid aff. Plastremys lata Parkinson, 1881 [ 4 ]; a pleurodiran bothremydid turtle described based on remains from this locality, Algorachelus peregrina Pérez-García, 2017 [ 5 ]; an indeterminate elasmosaurian sauropterygian; two neosuchian Crocodyliformes, of which one corresponds to a member of Eusuchia and the other to a most basal form; a theropod probably belonging to Abelisauridae; and a so far undescribed new lithostrotian sauropod (see Pérez-García et al [ 2 ] and references therein). In this context, the faunal list of the site is increased here.…”

Section: Introductionmentioning

confidence: 99%

A New Species of the Pythonomorph Carentonosaurus from the Cenomanian of Algora (Guadalajara, Central Spain)

Cabezuelo-Hernández

Pérez‐García

2023

Animals

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The Cenomanian (lowermost Upper Cretaceous) faunal assemblages are of high interest in understanding the turnovers that took place between the Early and the Late Cretaceous, resulting in significant differences. In this context, the analysis of the association of reptiles found in the Algora fossil site (Guadalajara Province, Central Spain) is of great interest since it represents the first European Cenomanian site with a high concentration of macrovertebrate remains. A new pythonomorph ‘lizard’ from Algora, Carentonosaurus algorensis sp. nov., is described here. It is the second representative of this European genus. Its microanatomical study reveals that an extreme pachyosteosclerosis affected at least its dorsal vertebrae, suggesting adaptations for slow-swimming habits in shallow-water environments. Consequently, this new taxon is interpreted as a slow swimmer, hovering near the bottom of near-shore marine environments of the Late Cretaceous European Archipelago and, more specifically, along the shores of the larger Iberian Island for that period. This is in concordance with the high diversification of ‘pachyostotic’ pythonomorphs recorded during the Cenomanian, allowing the subsequent adaptation of this lineage to open marine environments.

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Cenomanian vertebrates from Algora (central Spain): New data on the establishment of the European Upper Cretaceous continental faunas

Cited by 11 publications

References 71 publications

Fast-running theropods tracks from the Early Cretaceous of La Rioja, Spain

Fast-running theropods tracks from the Early Cretaceous of La Rioja, Spain

Fast-Running Theropods Tracks From the Early Cretaceous of La Rioja, Spain

A New Species of the Pythonomorph Carentonosaurus from the Cenomanian of Algora (Guadalajara, Central Spain)

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