Cetaceans are a highly diverse and enigmatic group of animals with a well-documented evolutionary history. This Review describes the macroevolutionary and palaeobiological history of Cetacea, from the...

Besanosaurus leptorhynchus is an early-diverging merriamosaurian ichthyosaur from the Middle Triassic Besano Formation of Alpine Europe. When the holotype specimen was first described, potential foeta...

Despite abundant and productive Toarcian ichthyosaur-bearing localities in continental Europe, in the UK, Toarcian ichthyosaurs may often be fragmentary and/or too poorly preserved for positive identi...

ALT: a whale is swimming in the ocean and has white spots on its back

Abstract. As the sole living rhynchocephalian, the tuatara (Sphenodon punctatus) provides important comparative information for fossil rhynchocephalians an

Historically, humeri and femora have been treated as diagnostic elements for fossil phocid (Carnivora, Pinnipedia, Phocidae) identification. This resulted in the naming of a plethora of extinct phoci...

– Dette gir nye muligheter til å forstå reproduksjon hos dyr som for lengst er utdødd, sier forsker.

Abstract. Determining embryonic stage is critical to assess heterochronic development between species and aids in our understanding of a clade’s evolution.