Swimming reptile prints from the Keuper facies (Carnian, Upper Triassic) of Los Gallegos new tracksite (Iberian Range, Valencia province, Spain)

Navarro, Oscar; Moratalla, José J.

doi:10.1007/s41513-018-0068-0

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…The lesser contact of the limbs on the bottom maybe due to a deeper water level in relation to the producer's body size (i.e. the result of paddling activity) as proposed by Navarro and Moratalla (2018) for the reptile prints from Los Gallegos tracksite. Again, this interpretation ts well the paleoenvironmental analysis: a permanent body of water like an abandoned channel or an interdistributary bay.…”

Section: Most Of Thementioning

confidence: 97%

“…The aim of this paper is to describe and discuss the El Barrancazo outcrop, its vertebrate tracks, and to provide an interpretation of these ndings in the context of the other Late Triassic localities at Cortes de Pallás. This includes the rst tracksite described in Reolid et al (2017), which is referred to in this paper as the El Ral tracksite, and a second tracksite described in Navarro and Moratalla (2018), known as the Los Gallegos tracksite (Fig. 1).…”

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El Barrancazo: a new locality of possible semi-aquatic turtle tracks from the Upper Triassic of Cortes de Pallás (Eastern Iberia)

Navarro¹,

Moratalla

2023

J Iber Geol

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This work describes the new vertebrate tracksite named El Barrancazo, located in Cortes de Pallás (Eastern Iberia). The footprints are presented as natural casts distributed in isolated blocks belonging to the Manuel Formation (K2, Keuper facies), deposited during the Carnian Humid Episode (Late Triassic).The blocks come from two beds of the same outcrop. The tracks are made up of sub-parallel digital impressions, displaying occasional curved traces, often without forming a complete outline, and showing a set of features such as lateral and posterior overhangs, longitudinal striations or digital re ectures, among others. These features, taken together with the sedimentological analysis carried out, suggest that animals moving in totally or partially buoyant conditions in a uvial environment produced most of these tracks. The size and morphology of these paleoichnological impressions suggest that they were probably produced, in some cases, by turtles, adding to the understanding of the paleoenvironmental and paleofaunistic conditions of the Late Triassic of Iberia during the Carnian, a key period in the evolution of different groups of continental vertebrates.The area of Cortes de Pallás concentrates the largest number of vertebrate footprints from the Upper Triassic of Iberia, which allows, by means of the comparative study of the three sites described to date, the analysis of the interaction of the trackmaker organism, animal behavior and substrate in the resulting morphology of the tracks made under subaqueous conditions. IntroductionThe ichnological record from Spain had yielded, up to date, relatively few localities with vertebrate tracks regarded as Upper Triassic: 1) Cambil locality (Jaén province) with tracks that were assigned to the Brachychirotherium ichnogenus (Pérez López 1993). 2) Carrascosa del Campo (Soria province), containing dinosaur tracks identi ed as Eubrontes and Anchisauripus (Pascual-Arribas and Latorre-Macarrón 2000). 3) Three localities (Upper Triassic, Keuper facies) from Domeño, Quesa and also Cortes de Pallás, Valencia province (Reolid et al. 2017) and a fourth also from Cortes de Pallás (Navarro and Moratalla 2018).Pérez-López (1993) regards the track-bearing stratigraphic section as part of the Keuper facies, but the outcrop conditions do not allow a more precise dating. The second locality is assigned to the Imón Fm, whose age would be Norian or even Rhaetian (Ortí 2004). In the third case the ichnites, mostly isolated, described in these outcrops have been interpreted as being produced by turtles in a semi-aquatic locomotion mode within the detritic sequences of the Manuel Formation (Reolid et al. 2018), of Carnian age. The latter, (Los Gallegos tracksite, also from the Manuel formation -Keuper facies) constitutes a remarkable exception for its track number (over 65 prints) and preservation conditions (Navarro and Moratalla 2018). These authors do not provide a precise producer identi cation, pointing to unknown reptiles of the chirotheroid group and therefore, related to archosau...

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Section: Most Of Thementioning

confidence: 97%

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confidence: 99%

El Barrancazo: a new locality of possible semi-aquatic turtle tracks from the Upper Triassic of Cortes de Pallás (Eastern Iberia)

Navarro¹,

Moratalla

2023

J Iber Geol

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“…Thus, the so-called "swim tracks" are produced when the animal is partially or completely submerged in water with the body buoying and generally the pes (sometimes other parts of the body) entered in contact with the subaqueous substrate (Farlow et al, 2018;Lee et al, 2019;Milner & Lockley, 2016). Swim tracks present a series of common features (sensu McAllister, 1989;McAllister & Kirby, 1998;Navarro & Moratalla, 2018), such as (1) reflecture of digits; (2) Z traces; (3) kick-off scours; (4) impressions of only digital tips; and (5) absence of a regular locomotion pattern.…”

Section: Aquatic Locomotion Could Dinosaurs Swim?mentioning

confidence: 99%

¿Qué nos dicen sus huellas? Muchas preguntas y algunas respuestas sobre la vida de los dinosaurios no avianos

Díaz-Martínez,

Citton,

Castanera

2023

J Iber Geol

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Dinosaur tracks are considerably common in the fossil record and were described from many areas in the world. They provide a live picture of dinosaur behaviour and offer valuable data about different aspects of the trackmaker paleobiology. The dinosaur ichnological record allows gain information about autopod anatomy, functional adaptations, stance and gaits with which dinosaurs moved. This information, which is often difficult to obtain from the body-fossil record alone, allows making inferences not only concerning the single individuals who produced the footprints, but also within an evolutionary context. Footprints provide also evidences about the abilities that dinosaurs had to swim, run or live with certain pathologies. They also allowed inferring how they move in herds or even made courtship rituals. The study of tracks also enables the reconstruction of paleocommunities including predator–prey interaction. On the other hand, footprints are useful paleoenvironmental indicators, informing about moisture content, bathymetry, paleocurrents, subaqueous substrates, zonations in lacustrine margins, etc. In addition, it has been proposed that dinosaur track assemblages can be related to certain facies (ichnofacies), in order to refine paleoenvironmental reconstructions. Dinosaur tracks can sometimes be in the shadow with respect to the skeletal record. However, the data obtained from the ichnological record complements and completes the knowledge we have about the life of dinosaurs, even showing previously unknown aspects. This work is an overview of the information we can obtain from the study of non-avian dinosaur footprints, trying to answer some questions about their life.

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3D Imaging of southernmost Triassic archosaur footprints from Europe (Southern Spain)

et al. 2020

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Swimming reptile prints from the Keuper facies (Carnian, Upper Triassic) of Los Gallegos new tracksite (Iberian Range, Valencia province, Spain)

Cited by 6 publications

References 18 publications

El Barrancazo: a new locality of possible semi-aquatic turtle tracks from the Upper Triassic of Cortes de Pallás (Eastern Iberia)

El Barrancazo: a new locality of possible semi-aquatic turtle tracks from the Upper Triassic of Cortes de Pallás (Eastern Iberia)

¿Qué nos dicen sus huellas? Muchas preguntas y algunas respuestas sobre la vida de los dinosaurios no avianos

3D Imaging of southernmost Triassic archosaur footprints from Europe (Southern Spain)

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