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  • Book Review
  • Open Access
751 Views
8 Pages

This book (Figure 1) covers the main facets of the Jurassic Park saga, including paleontological (Steyer), literary, cinematographic and commercial (Allard), mythical and psychological (Jandrok), mathematical/stochastic (Uzan) and genetic (Lebreton)...

  • Article
  • Open Access
445 Views
22 Pages

Stable Isotope Analysis of Gryphaea arcuata Reveals the Prevalence of Humid Tropical Conditions During the Early Sinemurian of Normandy (Fresville), Northwestern France

  • Christophe Lécuyer,
  • Lucie Peyrède,
  • Eric Buffetaut,
  • Haiyan Tong,
  • Romain Amiot,
  • François Fourel and
  • Florent Arnaud-Godet

31 December 2025

Marine deposits in western Europe provide insight into the interplay between the warm Tethys and cooler Boreal domains, offering a climatic context for the radiation of Early Jurassic species. Reconstructions of temperature for the Hettangian and Sin...

  • Article
  • Open Access
1,071 Views
10 Pages

5 November 2025

New theropod tracks found in the Papo-Seco Formation (lower Barremian, Lusitanian Basin, Portugal) are presented. In 2022, thirteen theropod tracks were identified on the lowermost bed of this formation, preserved as natural cast infillings on the be...

  • Article
  • Open Access
1,311 Views
19 Pages

First Record of Bramatherium Falconer, 1845 (Mammalia: Giraffidae) from the Late Miocene of Greece and the Helladotherium-Bramatherium Debate

  • Kostantis Laskos,
  • Georgios Lazaridis,
  • Evangelia Tsoukala,
  • Evangelos Vlachos and
  • Dimitris S. Kostopoulos

3 November 2025

During the Late Miocene, Bramatherium was the main representative of the giraffid subfamily Sivatheriinae in the Indian Subcontinent, with sparse and uncertain records from adjacent regions. In the present paper, we describe and compare two ossicones...

  • Article
  • Open Access
932 Views
20 Pages

19 October 2025

At 47° S in Argentine Patagonia, the interaction between the Southern Westerly Winds (SWW) and the Andean barrier generates a steep climatic gradient, providing an ideal setting to evaluate Holocene vegetation responses. This study focuses on the...

  • Article
  • Open Access
1,092 Views
11 Pages

25 September 2025

Onychophora (velvet worms) are rare, soil-dwelling invertebrates with a fragile body structure that limits their fossil record. Their current distribution across the Neotropics has long been shaped by vicariance and dispersal events. Here, we evaluat...

  • Article
  • Open Access
4,316 Views
32 Pages

Unraveling the Strange Case of the First Canarian Land Fauna (Lower Pliocene)

  • Antonio Sánchez-Marco,
  • Romain Amiot,
  • Delphine Angst,
  • Salvador Bailon,
  • Juan Francisco Betancort,
  • Eric Buffetaut,
  • Emma García-Castellano,
  • Lourdes Guillén-Vargas,
  • Nicolas Lazzerini and
  • Gema Siliceo
  • + 7 authors

Geological data of the region indicate that the Canary Islands have not been connected to the mainland before. However, fossil evidence suggests some kind of faunal exchange with Africa during the late Neogene. After extensive field work during past...

  • Article
  • Open Access
1 Citations
4,028 Views
15 Pages

Cranial kinesis in Neornithes is enabled by a complex system of bones, muscles, ligaments, and joints, allowing variable degrees of movement between the upper jaw and the neurocranium. Particularly, cranial prokinesis—mobility of the upper jaw...

  • Communication
  • Open Access
2,069 Views
12 Pages

Fossil resins from the area of Gulf of Gdańsk, Lublin area, Denmark, Bitterfeld, Lusatia and Ukraine, often grouped under the collective term ‘Baltic amber’, are complex organic mineraloids that have undergone various post-deposition...

  • Article
  • Open Access
2,035 Views
22 Pages

The Placerias quarry is a dicynodont-dominated bonebed in Upper Triassic Chinle Group strata near St. Johns in east-central Arizona, USA. Though long identified as being in strata of the lower Chinle Group, recently published numerical ages apparentl...

  • Article
  • Open Access
2,945 Views
14 Pages

A cast is an object that results from a fossilization process that is considerably rare in nature. For a cast to be produced, secondary diagenetic processes during and after fossilization are normally involved. Natural casts are formed when minerals...

  • Article
  • Open Access
2,474 Views
17 Pages

The extant Patagonian mara Dolichotis patagonum (Zimmermann, 1780) is a cursorial herbivorous rodent that is hare-like in appearance. Nowadays, it occurs in some ecoregions of Argentina (28 °S–50 °S) in lowland habitats, in semi-arid th...

  • Review
  • Open Access
2,642 Views
18 Pages

Divergent mid-Silurian (late Wenlock) and latest Silurian–earliest Devonian (Pridoli–Lochkovian) ages have been proposed for the strata bearing the millipede Pneumodesmus newmani, the oldest known undoubted air-breathing land animal, mark...

  • Feature Paper
  • Article
  • Open Access
2 Citations
3,429 Views
12 Pages

New Ornithopod Remains from the Upper Barremian (Lower Cretaceous) of Vadillos-1 (Cuenca, Spain)

  • Mélani Berrocal-Casero,
  • Fernando Barroso-Barcenilla,
  • Pedro Miguel Callapez,
  • Ricardo Pimentel,
  • María Rosario Alcalde-Fuentes and
  • Irene Prieto

New ornithopod remains have recently been discovered at the Vadillos-1 paleontological site, in Cuenca Province, Central Spain. These remains were collected in sandy and clayey deposits within “Wealden” alluvial facies, which correspond t...

  • Article
  • Open Access
4,940 Views
24 Pages

27 February 2025

Giant Paleogene groundbirds named Gastornis have long been known from Europe, with similar fossils from North America being placed in the genus Diatryma. A more recent discovery in China is evidence that these birds had wide geographic distribution....

  • Communication
  • Open Access
3 Citations
4,131 Views
10 Pages

We describe the first fossil traces from the skeletal remains of dinosaurs from Uruguay, from the Upper Cretaceous Guichón Formation. We describe the first biting/gnawing fossil traces reported for Uruguay, Machichnus bohemicus Mikul&aacu...

  • Feature Paper
  • Article
  • Open Access
6,378 Views
24 Pages

The Largest Mesosaurs Ever Known: Evidence from Scanty Records

  • Graciela Piñeiro,
  • Pablo Núñez Demarco and
  • Michel Laurin

25 December 2024

Mesosaurs have long been considered to be small to mid-sized aquatic to semiaquatic amniotes that lived in Gondwana during the Early Permian or Late Carboniferous, according to recent research that showed their ghost range extending back to the Penns...

  • Feature Paper
  • Article
  • Open Access
1 Citations
7,654 Views
46 Pages

An Equus-Dominated Middle Pleistocene (Irvingtonian) Vertebrate Fauna from Northcentral Florida, USA

  • Richard C. Hulbert,
  • Rachel E. Narducci,
  • Robert W. Sinibaldi and
  • Joseph R. Branin

15 November 2024

A newly discovered deposit on the bed of the Steinhatchee River produced a moderately diverse assemblage of 15 vertebrate taxa herein designated the Steinhatchee River 2A (STR 2A) local fauna. Mammalian taxa isotopically shown from other sites to be...

  • Article
  • Open Access
1 Citations
3,375 Views
22 Pages

25 October 2024

The poor preservation state of chitinozoans recovered from samples of the La Pola (Sandbian–Katian) and Don Braulio formations (Hirnantian-Llandovery), after being processed with standard methods, required significant modifications in processin...

  • Article
  • Open Access
2 Citations
18,657 Views
28 Pages

25 September 2024

The end of the Cretaceous saw the Western Interior Seaway divide North America into two land masses, Laramidia in the west and Appalachia in the east. Laramidian dinosaurs inhabited a narrow strip of land extending from Mexico to Alaska. Within this...

  • Feature Paper
  • Article
  • Open Access
1 Citations
5,066 Views
22 Pages

13 September 2024

Uruguayan ammonoids are preserved in phosphate and siderite nodules found at the basalmost tillite-like conglomerates of the San Gregorio Formation. This lithostratigraphic unit was deposited under glacial conditions and its age (as well as that of t...

  • Feature Paper
  • Article
  • Open Access
1 Citations
11,062 Views
19 Pages

19 August 2024

An articulated group of skeletal elements comprising a sacrum, both ilia and a first caudal vertebra, plus an isolated tooth found in immediate proximity to the bones, from the lower Cenomanian Chalk at Saint-Jouin-Bruneval (Seine-Maritime, Normandy,...

  • Feature Paper
  • Review
  • Open Access
2 Citations
4,682 Views
17 Pages

24 July 2024

Psocodea has been globally reported in different Mesozoic and Cenozoic amber deposits, one of which is Early Cretaceous Lebanese amber. The latter is one of the oldest ambers, with rich biological inclusions, bringing about the discovery of multiple...

  • Article
  • Open Access
2 Citations
4,319 Views
19 Pages

Middle Devonian actinopterygians from Lithuania and Belarus

  • Darja Dankina,
  • Jonas Šečkus and
  • Dmitry P. Plax

12 July 2024

In the Baltic States and Belarus, the Middle Devonian period is characterised by an abundant fossil record of invertebrates such as scolecodonts, brachiopods, ostracods, trilobites, bivalves, crinoids, gastropods, and tentaculites. On the other hand,...

  • Article
  • Open Access
4,555 Views
18 Pages

28 June 2024

The Ediacaran–Cambrian deposits of Brittany (Brioverian series) contain both a few isolated pluricentimetric discoid structures, dome-shaped or “donut”-shaped, and a multitude of centimetric to infracentimetric more or less elliptic...

  • Review
  • Open Access
5 Citations
4,898 Views
13 Pages

5 June 2024

Hymenoptera is the fourth-most diverse insect order today, including wasps, bees, bumblebees, and ants. They show a wide panoply of modes of life, such as herbivory, predation, parasitoidism, pollination, and eusociality. This group also includes a g...

  • Article
  • Open Access
3,225 Views
18 Pages

25 May 2024

The discovery of the new ammonite Altudostephanus longicostis gen. et sp. nov. around the lower/upper Valanginian boundary (Lower Cretaceous) with a true longitudinal ribs pattern oriented in the direction of coiling is reported here for the first ti...

  • Article
  • Open Access
1 Citations
6,045 Views
15 Pages

9 April 2024

Jamoytius kerwoodi, is a primitive, eel-like jawless vertebrate found uniquely in an Early Silurian (Llandovery epoch; 444–433 Ma) horizon near Lesmahagow, Scotland. This species is a rare component of a low-diversity dominantly nektonic detritus-fee...

  • Article
  • Open Access
6 Citations
7,142 Views
11 Pages

20 February 2024

A new metriorhynchid specimen with stomach contents is described here. Assigned to Metriorhynchus cf. superciliosus., this specimen has a clear longirostrine form as indicated by its gracile and elongated mandibular rami. This is the second example o...

  • Feature Paper
  • Article
  • Open Access
14 Citations
52,237 Views
65 Pages

3 January 2024

Tyrannosaurs are among the most intensively studied and best-known dinosaurs. Despite this, their relationships and systematics are highly controversial. An ongoing debate concerns the validity of Nanotyrannus lancensis, interpreted either as a disti...

  • Article
  • Open Access
1 Citations
4,850 Views
16 Pages

A Prognathodontin Mosasaur from the Maastrichtian of the Dakhla Oasis, Western Desert, Egypt

  • Gebely A. Abu El-Kheir,
  • Ahmed A. Shaker,
  • Hallie P. Street,
  • Nicholas R. Longrich,
  • Amin Strougo,
  • Anhar Asan and
  • Mohamed AbdelGawad

9 November 2023

Mosasaurs were diverse in the Upper Cretaceous in Africa, but relatively little is known about the mosasaur fauna of Egypt. Here, associated teeth and postcranial skeletal elements are reported for a mosasaur from the Maastrichtian Dakhla Shale of th...

  • Feature Paper
  • Article
  • Open Access
8,514 Views
11 Pages

The First Dinosaur from the Kingdom of Cambodia: A Sauropod Fibula from the Lower Cretaceous of Koh Kong Province, South-Western Cambodia

  • Vanchan Lim,
  • Eric Buffetaut,
  • Haiyan Tong,
  • Lionel Cavin,
  • Kimchhay Pann and
  • Phalline Polypheakdey Ngoeun

2 November 2023

The first discovery of a dinosaur bone from the Kingdom of Cambodia is reported in this paper. It consists of a sauropod fibula from a sandstone layer on Koh Paur island, in Koh Kong province, in south-western Cambodia. The dinosaur-bearing bed belon...

  • Article
  • Open Access
1 Citations
3,120 Views
13 Pages

19 September 2023

This work explores the swimming of ammonoids, cephalopods related to living squids, octopuses, and nautilids and, like the latter, equipped with a coiled external shell. A mathematical model is introduced for theoretical ammonoid conchs. The two diff...

  • Article
  • Open Access
1 Citations
4,833 Views
19 Pages

First Fossil of Tylidae (Isopoda: Oniscidea) in Kachin Amber, Myanmar, with a List of All Oniscidea Fossil Records

  • Jinbo Lu,
  • Stefano Taiti,
  • Sheng Li,
  • Yuanyuan Lu,
  • De Zhuo,
  • Xinpu Wang and
  • Ming Bai

A fossil of Oniscidea, Tylidae gen. et sp. indet. from Kachin amber (Cretaceous Cenomanian), Myanmar, is described here. The convex body, the cephalon with a triangular protrusion between the antennae, and pereonites 2–6 with epimera demarcated...

  • Feature Paper
  • Article
  • Open Access
11 Citations
24,192 Views
13 Pages

Stelladens mysteriosus: A Strange New Mosasaurid (Squamata) from the Maastrichtian (Late Cretaceous) of Morocco

  • Nicholas R. Longrich,
  • Nour-Eddine Jalil,
  • Xabier Pereda-Suberbiola and
  • Nathalie Bardet

Mosasaurids, a clade of specialized marine squamates, saw a major adaptive radiation in the Late Cretaceous, evolving a wide range of body sizes, shapes, and specialized tooth morphologies. The most diverse known mosasaurid faunas come from the late...

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Foss. Stud. - ISSN 2813-6284