Forskare har identifierat en ny fossil art av axolotl i Mexiko, vilket är den första fossila salamander som formellt har beskrivits i landet.
Forskare vid Zaragoza School of Advanced Studies vid Mexikos nationella autonoma universitet identifierade arten i delstaten Hidalgo. Den nya arten har fått namnet Ambystoma quetzalcoatli. Den utgör bevis för att axolotler har bebott Mexiko i miljontals år. Detta markerar den första formella identifieringen av en fossil salamander från landet.
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The first documented acoustic record of the song of the Osteocephalus omega frog was made in the municipality of Acevedo in Huila. The finding marks a scientific advance in the Andean Amazon Corridor thanks to community monitoring.
Scientists have identified a previously unknown genus and species of giant salamander from fossils found in Japan more than two decades ago. The creature, named Limnospondylus ajimuensis, lived about 3.5 million years ago and may have grown to 1.1 meters long.
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Newly examined fossils indicate that the earliest four-limbed vertebrates developed directly into adults without a larval phase featuring external gills.
Scientists have determined that structures once seen as traces of tiny animals in 540-million-year-old Brazilian rocks are actually fossilized communities of bacteria and algae. The reexamination uses advanced imaging to reveal preserved cells and organic material.
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A new study shows millipedes colonized land nearly 460 million years ago. The research completes the evolutionary tree for all living millipede orders. It was published in Current Biology in 2026.