📚 Encyclopedia Update — September 15, 2026

Ammonites hub

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Recent studies in the Cretaceous deposits of the Western Interior Seaway and Europe have refined the stratigraphic range of Puzosia mayoriana, identifying its role as a key index fossil for the Albian-Cenomanian boundary. New trace fossil evidence suggests these ammonites occupi…

Ammonites hub

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Recent research on Arietites bucklandi has focused on high-resolution conch morphometrics to refine the classification of the Arietitidae family within the Lower Jurassic. These studies emphasize its role as a key biostratigraphic marker for the Hettangian stage, with improved u…

Ammonites hub

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Recent studies utilizing high-resolution micro-CT scanning have clarified the complex septal morphology of Hildoceras bifrons, providing new insights into their buoyancy control and evolutionary development within the Toarcian stage. Research also highlights the species as a cru…

Prehistoric Mammals hub

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Recent phylogenetic studies have moved Andrewsarchus away from traditional mesonychid groupings, suggesting it may belong to the Artiodactyla clade as a stem-group cetancodontamorph. While no new fossil specimens have been unearthed since the original 1923 discovery, modern comp…

Dinosaurs hub

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Recent studies in the Gobi Desert have focused on ontogenetic growth patterns and neurocranial development, revealing that skull ornamentation changed significantly as individuals aged. Further analysis of nesting sites suggests complex communal brooding behaviors similar to oth…