📚 Encyclopedia Update — September 8, 2026

Ammonites hub

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Recent stratigraphic studies in the Gulf Coast region have further refined the biostratigraphic utility of Texanites texanus as an index fossil for the Coniacian stage. Research focusing on ammonite dispersal patterns suggests these cephalopods occupied niche environments across…

Ammonites hub

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Recent research into Middle Devonian goniatite assemblages has reaffirmed the role of Agoniatites vanuxemi as a primary index fossil for the Eifelian-Givetian boundary. Stable isotope analysis of shell material from the Appalachian Basin suggests these organisms inhabited cooler…

Ammonites hub

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Recent research has utilized synchrotron X-ray microtomography to reveal complex internal septal structures, refining the phylogenetic placement of Goniatites crenistria within the superfamily Goniatitoidea. Ecological studies suggest these cephalopods occupied specific neritic …

Ammonites hub

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Recent research on Manticoceras intumescens has focused on refining the Frasnian-Famennian mass extinction dynamics and the morphological evolution of its suture patterns. Investigations in the Canning Basin and the Rhenish Massif have provided better high-resolution stratigraph…

Ammonites hub

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Recent investigations into Devonian ammonoid diversity confirm Tornoceras simplex as a key index fossil for the Frasnian stage. New stratigraphic analyses have refined its range, highlighting its resilience and rapid dispersal across the subtropical shelf environments of the Gon…