The Muensterelloidea: phylogeny and character evolution of Mesozoic stem octopods

  title={The Muensterelloidea: phylogeny and character evolution of Mesozoic stem octopods},
  author={Dirk Fuchs and Yasuhiro Iba and Alexander M. Heyng and Masaya Iijima and Christian Klug and Neal L. Larson and G{\"u}nter Schweigert},
  journal={Papers in Palaeontology},
The Muensterelloidea is a superfamily of teudopseid octobrachians with a posteriorly patella‐shaped gladius. A morphometric comparison based on 148 muensterelloid gladii has yielded five new species accommodated in three new genera: Engeseriteuthis arcuatus gen. et sp. nov., Muensterella jillae sp. nov., Muensterella spinosa sp. nov., Tyrionella fauseri gen. et sp. nov. and Muensterellina johnjagti gen. et sp. nov. Cretaceous taxa ‘Tusoteuthis’ cobbani and ‘Muensterella’ tonii are re‐combined… 
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Exceptional soft-tissue preservation of Jurassic Vampyronassa rhodanica provides new insights on the evolution and palaeoecology of vampyroteuthids

Although soft tissues of coleoid cephalopods record key evolutionary adaptations, they are rarely preserved in the fossil record. This prevents meaningful comparative analyses between extant and

Anatomy and evolution of the first Coleoidea in the Carboniferous

It is suggested that conch internalization happened rather suddenly including early growth stages while the ink sac evolved slightly later, as well as the timing of other important steps in early coleoid evolutionary.

Eromangateuthis N. Gen., a New Genus for a Late Albian Gladius-Bearing Giant Octobrachian (Cephalopoda: Coleoidea)

  • D. Fuchs
  • Geography
    Paleontological Contributions
  • 2019
A comparative analysis shows that the gladius morphology of Boreopeltis helgolandiae Engeser & Reitner, 1985 (Aptian) is fundamentally different from Boreopelis soniae Wade, 1993 (Cenomanian), so Eromangateuthis n.

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Micropalaeontological, palaeoecological, and geochemical analyses demonstrate that Necroteuthis hungarica inhabited bathyal environments with bottom-water anoxia and high primary productivity in salinity-stratified Central Paratethys basins, and suggest that the Cretaceous and the early Cenozoic OMZs triggered their deep-sea specialization.



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A detailed comparison with Jurassic gladii shows that the Teudopseina is a very homogenous group that can be easily differentiated from other Mesozoic, gladius-bearing groups (Prototeuthidina, Loligosepiina).

Gladius shape variation in coleoid cephalopod Trachyteuthis from the Upper Jurassic Nusplingen and Solnhofen Plattenkalks

Morphometric analyses have shown that length−width indices are ambiguous characters to differentiate between the three species of Trachyteuthis hastiformis, which can be linked with the Early Jurassic genus Teudopsis and the Late Cretaceous genus Glyphiteuthis.

First Middle–Late Jurassic gladius vestiges provide new evidence on the detailed origin of incirrate and cirrate octopuses (Coleoidea)

The gladius vestige morphology suggests that the mode of locomotion and the life style of these shallow water inhabitants were similar to those of extant deep-sea octopods and that the Patelloctopodidae represents the stem group of the Octopoda (Cirrata and IncirRata).

Maastrichtian Ceratisepia and Mesozoic cuttlebone homeomorphs

Hewitt, R.A. & Jagt, J.W.M. 1999. Maastrichtian Ceratisepia and Mesozoic cuttlebone homeomorphs. - Acta Palaeontologica Polonica 44,3,305-326. The phylogenetics of potential Mesozoic ancestors of

Diversity, Morphology, and Phylogeny of Coleoid Cephalopods from the Upper Cretaceous Plattenkalks of Lebanon–Part I: Prototeuthidina

Abstract Morphologic analyses of a large collection of coleoid cephalopods from the Lebanese Upper Cretaceous yielded a much higher diversity than previously assumed and revealed numerous

The first coleoid cephalopods from the Upper Cenomanian of Sicily (Italy) and their implications for the systematic-phylogenetic position of the Palaeololiginidae (Teudopseina)

Our knowledge about the evolutionary history of coleoid cephalopods is mainly based on a few evolutionary windows. In particular, palaeogeographical data is strongly limited; every new fossil

Octobrachia - a diphyletic taxon?

The author proposes three different phylogenetic scenarios for the derivation of the Octopoda and Ciroctopoda: a monophyletic origin from muensterellids, amonophyletics origin from palaeololiginids and a diphyleticorigin from muens sterelliden and Palaeolliginiden.

The gladiuses in coleoid cephalopods: homology, parallelism, or convergence?

The present contribution reviews the “similarity” of the gladius, the chitinous shell rudiment in the dorsal mantle that provides rigid attachment sites for the locomotory-relevant musculature in living and Mesozoic gladius-bearing octobrachians.


Due to very well preserved remains of soft parts including arms, web, suckers and marginal fins, the octobrachian nature of Muensterella scutellaris has been confirmed.

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A morphological data matrix including both extinct and extant taxa is presented and a octopodiform interpretation for most fossil coleoids is suggested and the fossil sister taxon to the octopods is suggested to be Plesioteuthididae.