ArticleSwiss journal of palaeontology2021
Failed prey or peculiar necrolysis? Isolated ammonite soft body from the Late Jurassic of Eichstätt (Germany) with complete digestive tract and male reproductive organs.
Article in Swiss journal of palaeontology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed.
- Reproductive biology and anatomy of ammonites.Scientific reports · 2025Article
- 'Arm brains' (axial nerves) of Jurassic coleoids and the evolution of coleoid neuroanatomy.Swiss journal of palaeontology · 2023Article
- Taphonomic history and trophic interactions of an ammonoid fauna from the Upper Triassic Polzberg palaeobiota.Scientific reports · 2022Article
- Stability-Maneuverability Tradeoffs Provided Diverse Functional Opportunities to Shelled Cephalopods.Integrative organismal biology (Oxford, England) · 2022Article
- Phosphatized adductor muscle remains in a Cenomanian limid bivalve from Villers-sur-Mer (France).Swiss journal of palaeontology · 2022Article
- Ghost in the shell.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Another lesson from beautiful monsters: the case of 'sex reversals' in the Ammonoidea and their significance.BMC ecology and evolution · 2021Article
- New evidence from exceptionally "well-preserved" specimens sheds light on the structure of the ammonite brachial crown.Scientific reports · 2021Article
- Preservation of nautilid soft parts inside and outside the conch interpreted as central nervous system, eyes, and renal concrements from the Lebanese Cenomanian.Swiss journal of palaeontology · 2021Article
- Fossilized leftover falls as sources of palaeoecological data: a 'pabulite' comprising a crustacean, a belemnite and a vertebrate from the Early Jurassic Posidonia Shale.Swiss journal of palaeontology · 2021Article
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Abstract
Ammonoid soft parts have been rarely described. Here, we document the soft parts of a perisphinctid ammonite from the early Tithonian of Wintershof near Eichstätt (Germany). This exceptional preservation was enabled by the special depositional conditions in the marine basins of the Solnhofen Archipelago. Here, we document this find and attempt to homologize its parts with various organs such as the digestive tract, reproductive organs, the mantle cavity with gills, and the hyponome, with differing degrees of reservation. Alternative interpretations are also taken into account. We suggest that the soft parts were separated from the conch either taphonomically (following necrolytical processes affecting the attachment structures) or during a failed predation, where a predator (fish or coleoid) removed the soft parts from the conch but then dropped them. This find is interesting because it adds to the knowledge of ammonite anatomy, which is normally hidden in the conch. The reproductive organs show traces of what might have been spermatophores, thus supporting the hypothesis that the microconchs represented the males.
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