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Data from: Molecular clocks indicate turnover and diversification of modern coleoid cephalopods during the Mesozoic Marine Revolution
负责人:
关键词:
Macroevolution;molecular phylogenetics;Palaeozoic;cephalopods;decabrachia;Evolution;Phanerozoic;octobrachia;Mesozoic;Palaeobiology;cephalopods;molecular clocks
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:
关键词:
coleoid;taphonomy;calcium phosphate;cephalopod;Bias;buoyancy
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:
关键词:
Jurassic;Fossil-Lagerst?tte;coleoid phylogeny;Proteroctopus ribeti;Cephalopoda;coleoid;Lagerst?tte;exceptional preservation
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:
关键词:
shape analysis;Micro-hooks;falciferum-Zone;Belemnoidea;functional ecology;Posidonia shales;Early Jurassic;Chondroteuthis wunnenbergi;Toarcian
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: New records of the late Pliensbachian to early Toarcian (Early Jurassic) gladius-bearing coleoid cephalopods from the Ya Ha Tinda Lagerst
负责人:
关键词:
Gladius-Bearing Coleoid;Pliensbachian;Lagerst?tte;Early Jurassic;Toarcian;Vampyropoda
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

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