📚 Encyclopedia Update — September 18, 2026

Encyclopedia

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Recent studies in the Lower Cretaceous strata of the Subalpine Chains have refined the biostratigraphy of Hamulina denckmanni, confirming its role as a key index fossil for the Barremian stage. Research indicates that its distinctive uncoiled shell morphology likely served as a …

Encyclopedia

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Recent research on Menuites menu in the Hokkaido region has confirmed that this ammonite species exhibited significant sexual dimorphism, with macroconchs and microconchs displaying distinct shell morphologies. Studies also highlight its role as a key index fossil for the late C…

Ammonites hub

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Recent research on Hoploscaphites nicolleti within the Pierre Shale has refined our understanding of its ontogenetic stages and sexual dimorphism, highlighting its role as a key index fossil for the Late Cretaceous. Studies have focused on shell micro-architecture and paleobioge…

Ammonites hub

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Recent research into Lytoceras fimbriatum has focused on high-resolution micro-CT scanning to analyze the complex internal septal morphology. Studies emphasize the species' role as a highly specialized pelagic predator within Lower Jurassic Tethyan environments.

Dinosaurs hub

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Recent research into Pachyrhinosaurus canadensis has focused on micro-wear analysis of dental batteries, suggesting a diverse diet of tough vegetation, and advanced histological studies revealing complex growth patterns. New stratigraphic data from the Wapiti Formation has helpe…