ArticleNature communications2022
Fossil coleoid cephalopod from the Mississippian Bear Gulch Lagerstätte sheds light on early vampyropod evolution.
Article in Nature communications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed.
- Microstructural insights into the functional morphology and formation logic of spherulitic-fibrous prismatic architecture in the shell-like eggcase of the argonaut octopods.Scientific reports · 2026Article
- Rapid mid-Cretaceous diversification of squid and cuttlefish preceded radiation into coastal niches.Nature ecology & evolution · 2026Article
- Evolution is coupled with branching across many granularities of life.Proceedings. Biological sciences · 2025Article
- Colonization of the ocean floor by jawless vertebrates across three mass extinctions.BMC ecology and evolution · 2024Article
- Reply to: Revisiting the identification of Syllipsimopodi bideni and timing of the decabrachian-octobrachian divergence.Nature communications · 2023Article
- Revisiting the identification of Syllipsimopodi bideni and timing of the decabrachian-octobrachian divergence.Nature communications · 2023Article
- 'Arm brains' (axial nerves) of Jurassic coleoids and the evolution of coleoid neuroanatomy.Swiss journal of palaeontology · 2023Article
- Revisiting the chondrichthyan egg capsules inventory from the Pennsylvanian (Carboniferous) of Belgium: new data and perspectives.Die Naturwissenschaften · 2022Article
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2 authors.
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Abstract
We describe an exceptionally well-preserved vampyropod, Syllipsimopodi bideni gen. et sp. nov., from the Carboniferous (Mississippian) Bear Gulch Lagerstätte of Montana, USA. The specimen possesses a gladius and ten robust arms bearing biserial rows of suckers; it is the only known vampyropod to retain the ancestral ten-arm condition. Syllipsimopodi is the oldest definitive vampyropod and crown coleoid, pushing back the fossil record of this group by ~81.9 million years, corroborating molecular clock estimates. Using a Bayesian tip-dated phylogeny of fossil neocoleoid cephalopods, we demonstrate that Syllipsimopodi is the earliest-diverging known vampyropod. This strongly challenges the common hypothesis that vampyropods descended from a Triassic phragmoteuthid belemnoid. As early as the Mississippian, vampyropods were evidently characterized by the loss of the chambered phragmocone and primordial rostrum-traits retained in belemnoids and many extant decabrachians. A pair of arms may have been elongated, which when combined with the long gladius and terminal fins, indicates that the morphology of the earliest vampyropods superficially resembled extant squids.
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