Tremp Formation

Arenysaurus is a genus of hadrosaurid dinosaur from the Late Cretaceous (66 million years ago), being one of the last non-avian dinosaurs and it went extinct during the Cretaceous–Paleogene extinction event. It is known from a partial skull and skeleton found in the late Maastrichtian-age Tremp Formation of the Pyrenees Mountains in Spain. The type species is A. ardevoli, described in 2009 by Pereda-Suberbiola et al., a group of researchers from Spain. The genus name refers to Arén, where it was found, and the specific epithet honours geologist Lluís Ardèvol. Arenysaurus was a lambeosaurine, a

Allodaposuchus is an extinct genus of crocodyliforms that lived in what is now southern Europe during the Campanian and Maastrichtian stages, and possibly the Santonian stage, of the Late Cretaceous. Although generally classified as a non-crocodylian eusuchian crocodylomorph, it is sometimes placed as one of the earliest true crocodylians. Allodaposuchus is one of the most common Late Cretaceous crocodylomorphs from Europe, with fossils known from Romania, Spain, and France.

Pararhabdodon (meaning "near fluted tooth" in reference to Rhabdodon) is a genus of tsintaosaurin hadrosaurid dinosaur from the Maastrichtian-aged (Late Cretaceous) Tremp Group of Spain. The first remains were discovered from the Sant Romà d'Abella fossil locality and assigned to the genus Rhabdodon, and later named as the distinct species Pararhabdodon isonensis in 1993. Known material includes assorted postcranial remains, mostly vertebrae, as well as from the skull. Specimens from other sites, including remains from France, a maxilla previously considered the distinct taxon Koutalisaurus ko

Koutalisaurus (meaning "spoon lizard", in reference to the shape of the dentary) is a potentially dubious genus of lambeosaurine hadrosaurid dinosaur based on a mostly complete dentary recovered from the Maastrichtian-aged (Late Cretaceous) Tremp Formation near the town of Abella de la Conca, Lleida, Spain.

Abditosaurus (meaning "forgotten lizard") is an extinct genus of titanosaurian sauropod dinosaur from the Late Cretaceous (Maastrichtian) Conques Formation (Tremp Group) of Catalonia, Spain. The genus contains a single species, Abditosaurus kuehnei, known from a partial specimen representing the most complete titanosaur skeleton found in Europe. Phylogenetic analyses recover it within a clade of South American and African saltasaurines, distinct from other insular dwarf sauropods from the European archipelago. Abditosaurus inhabited the Ibero-Armorican Island, a prehistoric island made up of w

Adynomosaurus is a genus of lambeosaurine dinosaur from the Late Cretaceous of what is now Catalonia, Spain. First discovered in 2012, it was named in 2019 with the type and only species being Adynomosaurus arcanus. It is only known from scant material, but is distinguished from other hadrosaurs by its weakly developed shoulder blade which would have had underdeveloped musculature, which lends it its scientific name, partially from the Greek word for "weak". Its exact relationships with other hadrosaurs remain unresolved, with it not consistently being recovered as a relative of any other spec

Ogresuchus is an extinct crocodylomorph known from the Upper Cretaceous (Maastrichtian stage) Tremp Formation in Spain. The type species, O. furatus, was named in 2020. It was a small crocodylomorph, measuring long and weighing about . Initially classified as a sebecid, a 2026 study suggested that it was a neosuchian, possibly an atoposaurid.

Pareisactus (from the Greek "pareisaktos", meaning "intruder", referring to being represented as a single element among hundreds of hadrosaurid bones) is a genus of rhabdodontid ornithopod dinosaur from the Late Cretaceous (lower Maastrichtian) Conquès Member of the Tremp Formation in the Southern Pyrenees of Spain. The type and only species is P. evrostos, known only from a single scapula.

Polysternon is a genus of turtles in the extinct family Bothremydidae. It was described by Portis in 1882, and contains the species P. provinciale (originally placed in the genus Pleurosternon), which existed during the Cretaceous of what is now France and a new species, P. isonae, from the Late Maastrichtian of Spain.

Spheroolithus is an oogenus of dinosaur egg.

Hainina is an extinct mammal genus from the latest Cretaceous to the Paleocene of Europe.

Arenysuchus (meaning "Arén crocodile") is an extinct monospecific genus of allodaposuchid eusuchian crocodylomorph from Late Cretaceous (late Maastrichtian stage) deposits of north Spain. It is known from the holotype MPZ ELI-1, a partial skull from Elías site, and from the referred material MPZ2010/948, MPZ2010/949, MPZ2010/950 and MPZ2010/951, four teeth from Blasi 2 site. It was found by the researchers José Manuel Gasca and Ainara Badiola from the Tremp Formation, in Arén of Huesca, Spain. It was first named by Eduardo Puértolas, José I. Canudo and Penélope Cruzado-Caballero in 2011 a

Agaresuchus is an extinct genus of allodaposuchid eusuchian crocodylomorph from the Late Cretaceous (Campanian-Maastrichtian) of Spain. It includes two species, the type species A. fontisensis, and A. subjuniperus, which was originally named as a species of the related genus Allodaposuchus. However, it has been proposed that both species may instead belong to the genus Allodaposuchus.