A new extinct Pleistocene species of spadefoot toad and comments on the paleoecology and paleobiogeography of anurans from Rancho La Brea, California

Fossil amphibians hold great promise for paleoecological, paleoclimatological, and biogeographic studies because of their extreme sensitivity to environmental conditions. However, the study of foss...

tandfonline.com

Early Paleocene (earliest Torrejonian) mammals from the Tullock Member of the Fort Union Formation, northeastern Montana, U.S.A.

The Hell Creek Formation and overlying Tullock Member of the Fort Union Formation in northeastern Montana are well known for preserving an exceptional fossil record of mammals leading up to and acr...

tandfonline.com

First observed cranial pathology in the early Permian synapsid Dimetrodon limbatus

Dimetrodon is an early non-mammalian synapsid from the early Permian of Europe and North America best known for its elongated neural spines, which in life formed an interconnected sail, and an earl...

tandfonline.com

A revision of Nematheriinae sloths (Mammalia, Xenarthra, Scelidotheriidae) from the Early–Middle Miocene Santa Cruz Formation, southern Patagonia

Geological and paleontological surveys in the Santa Cruz Formation (SCF; Early–Middle Miocene; Southern Argentine Patagonia), begun in the 19th century, have uncovered a rich extinct fauna that has...

tandfonline.com

New insights into the extinction and recovery of marine vertebrates across the Permian–Triassic mass extinction event in the Dolomites, Southern Alps, Italy

The impact of the Permian–Triassic mass extinction on marine vertebrates is incompletely understood due to their scarce fossil record. To better understand marine vertebrate extinction and recovery...

tandfonline.com

Comparative osteology and adaptations of the extinct spectacled cormorant (Urile perspicillatus)

The spectacled cormorant (Urile perspicillatus) is a recently extinct species of Phalacrocoracidae that survived into historical times only on the Commander Islands in the Northern Pacific. The spe...

tandfonline.com

A new diminutive Jurassic neosauropod from the Kaladongar Formation (Khadir Uplift) of the Kachchh Basin, western India

In this study, we report a partial skeleton of a small (ca. 7 m) sauropod dinosaur from the ?upper Lower Jurassic (Pliensbachian) to Bajocian strata of the Kaladongar Formation (Khadir Uplift), Kac...

tandfonline.com

Re-evaluating body size in the Middle Jurassic pliosaur Liopleurodon ferox Sauvage, 1873

Liopleurodon ferox is a macropredatory pliosaurid plesiosaur from the Callovian (Middle Jurassic) of Europe. Several near-complete skeletons are known from the Peterborough Member of the Oxford Cla...

tandfonline.com

A new species of Enchodus from the Western Interior Seaway of North America and a taxonomic revision of Enchodus dirus, Leidy, 1857

Enchodus is a diverse and widespread genus of teleost fish known from the Late Cretaceous. Many North American species of Enchodus were erected based on isolated remains, including Enchodus dirus L...

tandfonline.com

A case of mistaken identity: a reassessment of puma (Puma concolor) and the North American cheetah-like cat (Miracinonyx trumani) occurrences in the fossil record of Upper Pleistocene North America

The North American cheetah-like cat (Miracinonyx trumani) is a Late Pleistocene felid currently known from a handful of sites in North America. Its close relative, the mountain lion (Puma concolor)...

tandfonline.com

Late Oligocene dugongid remains from India: insights into past seagrass-sirenian associations in the eastern Tethys

Sirenians, or sea cows, were among the first mammals to become fully aquatic and are closely tied to seagrass ecosystems in shallow seas. Establishing direct links between fossil sirenians and seag...

tandfonline.com

Chondroid bone in the cervical ribs of a new juvenile mamenchisaurid

As a well-known sauropod dinosaur clade dominant in the Middle–Late Jurassic of Asia, Mamenchisauridae exhibits unique body size evolution and ecological adaptability, making it a key focus in dino...

tandfonline.com

A new genus and species of Proterotheriidae (Mammalia, Litopterna) from the Fray Bentos Formation (late Oligocene, Deseadan SALMA), Uruguay

The family Proterotheriidae has ancient antecedents in Uruguay, even though the accurate documentation about its diversity and distribution has only recently been organized. Currently, the record o...

tandfonline.com

Signs of intraspecific aggression in fossil hyenas: cranial bite punctures in Adcrocuta eximia and Chasmaporthetes lunensis

Hyaenids are an integral part of the Neogene and Quaternary ecosystems of the Old World, including some of their most specialized apex predators. However, the exact evolutionary drivers that led to...

tandfonline.com

Formalization of the long-used name Andinotoxodon bolivarensis Madden (Toxodontidae, Notoungulata, Mammalia)

The name Andinotoxodon bolivarensis was originally proposed in an unpublished doctoral dissertation, rendering it nomenclaturally unavailable under the International Code of Zoological Nomenclature...

tandfonline.com

New insights into the genus Ophiopsiella (Neopterygii: Halecomorphi) from the Upper Jurassic of the Solnhofen Archipelago

Prompted by the rediscovery of type specimens, the genus Ophiopsiella within the Halecomorphi is revised, thereby correcting two taxonomic aspects within this genus. Firstly, the recent discovery o...

tandfonline.com

First report of fossil Masturus (sharptail mola) from the Miocene Hagjeon Formation, southeastern Korea

We report the first fossil occurrence of Masturus from the Middle Miocene Hagjeon Formation of the Pohang Basin, southeastern Korea. It is referable to Masturus cf. lanceolatus based on a distincti...

tandfonline.com

Cranial anatomy of Kawanectes lafquenianus (Plesiosauria; Elasmosauridae) from la colonia formation with comments on the paleobiogeography of the weddellonectians

A new, well-preserved specimen of the small-bodied elasmosaurid Kawanectes lafquenianus (corrected name) from the La Colonia Formation (Upper Maastrichtian, Patagonia, Argentina) provides unprecede...

tandfonline.com

New material of Adelphailurus kansensis sheds light on the cranial anatomy of an early-diverging machairodontine felid

Adelphailurus kansensis is a puma-sized felid, originally described from fragmentary material in the Edson Quarry (Kansas, Mio-Pliocene). Here, we describe a nearly complete cranium from the Wikieu...

tandfonline.com

The many faces of ‘Mesonichthys’: new anatomical and taxonomic diversity among Carboniferous ray-finned fishes (Actinopterygii) from the U.K.

The Carboniferous represents a period where ray-finned fishes (actinopterygians), which today account for half of all living vertebrates, appear to increase exponentially in abundance as well as in...

tandfonline.com

tandfonline.com

Elasmotherium chaprovicum (Perissodactyla: Rhinocerotidae) from the Early Pleistocene Taurida Cave, Crimea

This paper describes a representative collection of deciduous and permanent teeth, as well as postcranial skeletal elements of Elasmotherium, from the abundant Early Pleistocene locality at Taurida...

tandfonline.com

New unenlagiid from the Chorrillo Formation (Late Cretaceous, Maastrichtian), SW Patagonia, Argentina

Unenlagiids constitute a group of paravian theropods up to now represented in Gondwanan landmasses. They are particularly diverse in northern Patagonia, where at least seven species were discovered...

tandfonline.com

A new shuvosaurid (Archosauria, Poposauroidea) from the Late Triassic (Norian) Hayden Quarry of New Mexico, U.S.A.

Bipedal shuvosaurid archosaurs were present for much of the Late Triassic Period. The clade is particularly diverse in Upper Triassic assemblages in the western U.S.A. Isolated bones are easily dif...

tandfonline.com

The earliest European Azhdarchoid: reappraisal of “Palaeornis” cliftii Mantell, 1844 from the Wealden of Cuckfield, U.K.

“Palaeornis” cliftii is among the earliest British pterosaur discoveries. Although considered a dubious taxon by most recent authors, the type and only specimen is presently recognized as an azhdar...

tandfonline.com

A new genus and species of aquatic snake (Squamata: Alethinophidia) from the Paleocene (upper Danian) Porters Creek Formation of Alabama, U.S.A.

The Late Cretaceous to Eocene alethinophidian families Palaeophiidae and Nigerophiidae comprise several taxa predominantly known from isolated vertebrae, which show adaptations for the aquatic real...

tandfonline.com

A new pan-shinisaur lizard (Anguimorpha) from the lower Campanian of Villeveyrac (Hérault, France)

The Chinese crocodile lizard (Anguimorpha, Pan-Shinisaurus Shinisaurus crocodilurus) is an endangered species inhabiting the lowland rainforests of southeastern China and northern Vietnam. The evol...

tandfonline.com

The skull and pectoral girdle of a large gar that lived ∼2000 years after the Cretaceous/Paleogene mass extinction event

The gars, Lepisosteiformes, include seven extant species divided among two crown radiations, Atractosteus and Lepisosteus, whose Cretaceous split and modern diversity belie a more diverse total gro...

tandfonline.com

Eco-phenotypic diversity in European Middle Pleistocene Hippopotamus populations

Now limited to Africa, hippopotamids once represented a common element of the European megafauna. However, the ecological and phenotypic diversity of European hippopotamuses is still not fully unde...

tandfonline.com

Anatomy of the skull and inner ear cavity of the North American Eocene turtle Echmatemys based on high-resolution computed tomography and its implications for the deep history of Geoemydidae (Cryptodira: Testudinoidea)

Testudinoidea is a radiation of terrestrial and freshwater species that account for nearly half of all extant turtle diversity. The early fossil history of this lineage is exemplified well by the e...

tandfonline.com