Morphological variation of the relictual alveolar structures in the mandibles of baleen whales [PDF]
PeerJ, 2021 Living baleen whales (mysticetes) are bulk filter feeders that use keratinous baleen plates to filter food from prey laden water. Extant mysticetes are born entirely edentulous, though they possess tooth buds early in ontogeny, a trait inherited from ...
Carlos Mauricio Peredo +1 more
doaj +2 more sources
Preservation of latest Cretaceous (Maastrichtian)—Paleocene frogs (Eorubeta nevadensis) of the Sheep Pass Formation of east-central Nevada and implications for paleogeography of the Nevadaplano [PDF]
PeerJ, 2020 Here we report on exceptional preservation of remains of the frog Eorubeta nevadensis in deposits of the Sheep Pass Formation, ranging from Late Cretaceous to Eocene, in the south Egan Range, Nevada.
Joshua W. Bonde +4 more
doaj +2 more sources
A synthesis tree of the Copepoda: integrating phylogenetic and taxonomic data reveals multiple origins of parasitism [PDF]
PeerJ, 2021 The Copepoda is a clade of pancrustaceans containing 14,485 species that are extremely varied in their morphology and lifestyle. Not only do copepods dominate marine plankton and sediment communities and make up a sizeable component of the freshwater ...
James P. Bernot +2 more
doaj +2 more sources
Open Archaeology, 2021 The archaeological site of the Domus Romana in Rabat, Malta was excavated almost 100 years ago yielding artefacts from the various phases of the site. The Melite Civitas Romana project was designed to investigate the domus, which may have been the home ...
Tanasi Davide +5 more
doaj +1 more source
Diegoaelurus, a new machaeroidine (Oxyaenidae) from the Santiago Formation (late Uintan) of southern California and the relationships of Machaeroidinae, the oldest group of sabertooth mammals [PDF]
PeerJ, 2022 Machaeroidinae is a taxonomically small clade of early and middle Eocene carnivorous mammals that includes the earliest known saber-toothed mammalian carnivores.
Shawn P. Zack +2 more
doaj +2 more sources
Political Leaders in the APP Ecosystem
Social Sciences, 2021 This article analyzes the process of symbolic and critical-discursive construction of applications developed for mobile devices for some of the world’s most important heads of state through their manifestation in the ecosystem of mobile applications for ...
Raquel Quevedo-Redondo +3 more
doaj +1 more source
The evolutionary history of dogs in the Americas [PDF]
Science, 2018 Lineage losses for man's best friend Dogs have been present in North America for at least 9000 years. To better understand how present-day breeds and populations reflect their introduction to the New World, Ní Leathlobhair et al.
Ní Leathlobhair, Máire +49 more
openaire +8 more sources
Hydrology controls recruitment of two invasive cyprinids: bigheaded carp reproduction in a navigable large river [PDF]
PeerJ, 2017 In the Mississippi River Basin of North America, invasive bigheaded carp (silver carp Hypophthalmichthys molitrix and bighead carp H. nobilis, also referred to as Asian carp) have spread rapidly over the past several decades.
Daniel K. Gibson-Reinemer +4 more
doaj +2 more sources
Mesquite bugs, other insects, and a bat in the diet of pallid bats in southeastern Arizona [PDF]
PeerJ, 2018 The pallid bat (Antrozous pallidus) is a species of western North America, inhabiting ecoregions ranging from desert to oak and pine forest. They are primarily insectivorous predators on large arthropods that occasionally take small vertebrate prey, and ...
Nicholas J. Czaplewski +2 more
doaj +2 more sources
New fossil lizard specimens from a poorly-known squamate assemblage in the Upper Cretaceous (Campanian) San Juan Basin, New Mexico, USA [PDF]
PeerJ, 2020 Recent collection efforts in the upper Campanian (∼76-73.5 Ma) Fruitland and Kirtland formations of northwestern New Mexico have significantly increased the taxonomic diversity of lizards in this historically poorly understood squamate assemblage.
C. Henrik Woolley +2 more
doaj +2 more sources