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Data from: Molecular clocks indicate turnover and diversification of modern coleoid cephalopods during the Mesozoic Marine Revolution
- 负责人:
- DOI:
- doi:10.5061/dryad.180nh
- 摘要:
- Coleoid cephalopod molluscs comprise squid, cuttlefish and octopuses, and represent nearly the entire diversity of modern cephalopods. Sophisticated
Data from: Buoyancy mechanisms limit preservation of coleoid cephalopod soft tissues in Mesozoic Lagerst?tten
- 负责人:
- DOI:
- doi:10.5061/dryad.12pn2
- 摘要:
- Coleoid cephalopods are characterized by internalization of their shell, and are divided into the ten-armed Decabrachia (squids and cuttlefish
Data from: Proteroctopus ribeti in coleoid evolution
- 负责人:
- DOI:
- doi:10.5061/dryad.2sk24
- 摘要:
- Palaeontological data are key elements for inferring ancestral character states and the assembly of character complexes, but cephalopod fossils preserving soft tissues are very rare. The exceptionally well-preserved, unique specimen of Jurassic Proteroctopus ribeti Fischer & Riou from the Lagerst?tte of La-Voulte-sur-Rh?ne (c. 165 Ma, France) is one of the few fossil octopod related taxa, but is rarely considered in evolutionary studies. In this paper, we used synchrotron microtomography to reappraise its external characters and for the first time, to reveal its internal structures. A unique character association is found with two fins, head fused to the body, eight well-developed arms with cirri and two rows of oblique suckers, a gladius and absence of an ink sac. The phylogenetic analysis indicates that Proteroctopus is a basal member of the Vampyropoda. However, this result should be interpreted with caution due to the number of unknown character states in the matrix. Contrary to previous assumptions, the phylogenetic position of Proteroctopus, as well as its stratigraphic occurrence, suggest that the arrangement of biserial suckers may be the ancestral condition in Vampyropoda.
Data from: Grasping the shape of belemnoid arm hooks - a quantitative approach
- 负责人:
- DOI:
- doi:10.5061/dryad.5q5m1
- 摘要:
- Chitinous arm hooks (onychites) of belemnoid coleoid cephalopods are widely distributed in Mesozoic sediments. Due to their relative abundance
Data from: Nectocaridid ecology, diversity, and affinity: early origin of a cephalopod-like body plan
- 负责人:
- DOI:
- doi:10.5061/dryad.7m6kg
- 摘要:
- t the funnel is optimized for efficient jet propulsion in a low Reynolds number flow regime. Nectocaridids closely resemble coleoid cephalopods, but a position
Data from: Untangling phylogenetical, geometrical and ornamental imprints on Early Triassic ammonoid biogeography: a similarity-distance decay study.
- 负责人:
- DOI:
- doi:10.5061/dryad.3q936f7c
- 摘要:
- long-distance migrations, as observed for some present-day coleoid cephalopods.
Data from: New records of the late Pliensbachian to early Toarcian (Early Jurassic) gladius-bearing coleoid cephalopods from the Ya Ha Tinda Lagerst
- 负责人:
- DOI:
- doi:10.5061/dryad.pj25h
- 摘要:
- collection of exceptionally preserved fossil Vampyropoda specimens. Vampyropods are soft-bodied cephalopods (coleoids) characterized by eight arms
Data from: Genomic signatures of GPCR expansions reveal functional transitions in the evolution of cephalopod signal transduction
- 负责人:
- DOI:
- doi:10.5061/dryad.d3qh5c8
- 摘要:
- Coleoid cephalopods show unique morphological and neural novelties, such as arms with tactile and chemosensory suckers and a large complex
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