Fossil taxa described in 2015

Gualta is an extinct genus of leontiniid notoungulates. It lived during the Late Oligocene of what is now Argentina.

Pliobates cataloniae is a primate from 11.6 million years ago, during the Iberian Miocene. Originally described as a species of stem-ape that was found to be the sister taxon to gibbons and great apes like humans, it was subsequently reinterpreted as a non-ape catarrhine belonging to the group Crouzeliidae within the superfamily Pliopithecoidea on the basis of discovery of new dental remains with crouzeliid synapomorphies.

Morrosaurus is an extinct genus of herbivorous elasmarian dinosaur that lived in the late Cretaceous in Antarctica. The only known species is the type Morrosaurus antarcticus.

Equisetum dimorphum is an extinct horsetail species of the family Equisetaceae, and one of the oldest records of the genus Equisetum. It was found in rocks from the Lower Jurassic of Chubut, Argentina, among other plants as ferns, conifers and pteridosperms. Their remains consist of stems, leaves, strobili, and pagoda structures, which are preserved as impressions and casts. The combination of fine grained sediment, and the probable silica deposits in the epidermis of the plant, have managed to conserve not only its gross morphology, but also epidermal details not often present in this kind of preservation. This species was described in 2015 in Ameghiniana by a team led by Andres Elgorriaga, that included investigators of the Museum of Paleontology Egidio Feruglio, the Swedish Museum of Natural History, and the Buenos Aires University.

Manipulator is an extinct cockroach genus including species which lived from the Late Jurassic to the Late Cretaceous. The type species is Manipulator modificaputis, described on the basis of the holotype specimen which is fossilized in a 100-million-year-old piece of Burmese amber, found in a quarry of volcanoclastic mudstone (a sedimentary rock) at Noije Bum in the Hukawng Valley in Myanmar. M. modificaputis was described by Peter Vršanský, of the Geological Institute SAS of Bratislava, and by Günter Bechly, of the Staatliches Museum für Naturkunde in Stuttgart.

Valenopsalis is an extinct mammal from the Paleocene of North America (more specifically, Puercan-aged deposits in Wyoming, Montana and Saskatchewan. Originally referred to the genus Catopsalis (C. joyneri), it has more recently been moved to its own genus as the former was understood to be a wastebasket taxon. It is currently considered to be the most basal representative of Taeniolabidoidea.

Chilcacetus is an extinct genus of primitive odontocete known from Early Miocene (Aquitanian) of Peru. Fossils were found in and named after the Chilcatay Formation of the Pisco Basin.

Agastomyrma is an extinct genus of formicid in the ant subfamily Myrmicinae known from the fossil species Agastomyrma laticeps found in eastern Asia.

Pachycondyla oligocenica is an extinct species of formicid in the ant subfamily Ponerinae known from a fossil found in eastern Asia.

Gesomyrmex macrops is an extinct species of formicid in the ant subfamily Formicinae known from a fossil found in eastern Asia.