Palaeontology: A little Kraken wakes

@article{Bengtson2010PalaeontologyAL,
  title={Palaeontology: A little Kraken wakes},
  author={S. Bengtson},
  journal={Nature},
  year={2010},
  volume={465},
  pages={427-428}
}
Fossils from the famed Burgess Shale continue to deliver fresh perspectives on a dramatic episode in evolutionary time. The latest revelations bear on the early history of cephalopod molluscs. The 505-million-year-old Burgess Shales of British Columbia are justifiably famous for the exquisite preservation of their fossils — and the extreme oddity of many of them, such as Anomalocaris and Hallucigenia, which for many years defied classification, and formed the basis of Stephen Jay Gould's book… Expand
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References

SHOWING 1-6 OF 6 REFERENCES
Primitive soft-bodied cephalopods from the Cambrian
TLDR
This work reinterpretes the problematic Middle Cambrian animal Nectocaris pteryx as a primitive (that is, stem-group), non-mineralized cephalopod, based on new material from the Burgess Shale, and indicates that primitive cepinghalopods lacked a mineralized shell, were hyperbenthic, and were presumably carnivorous. Expand
A soft-bodied mollusc with radula from the Middle Cambrian Burgess Shale
TLDR
Odontogriphus omalus is interpreted to be members of an early stem-group mollusc lineage that probably originated in the Neoproterozoic Ediacaran Period, providing support for the retention of a biomat-based grazing community from the late Precambrian Period until at least the Middle Cambrian. Expand
The bearing of the new Late Cambrian monoplacophoran genus Knightoconus upon the origin of the Cephalopoda
TLDR
Hypothetical reconstructions of molluscan anatomy support the notion that cephalopods may have been derived directly from a hypseloconid having a high, slightly curved, multiseptate, bilaterally symmetrical shell, by the subsequent development of a siphuncle. Expand
Misadventures in the Burgess Shale
One hundred years after Charles Doolittle Walcott found a wealth of Cambrian fossils in the Rocky Mountains of British Columbia, Desmond Collins reflects on the bumpy road of their classification.
New observations on airborne jet propulsion (flight) in squid, with a review of previous reports
TLDR
New observations of flying behaviour in a species of squid previously thought to be too heavy for long-distance flight are reported as well as an observation of squid flight from a geographic area in which such behaviour has not previously been reported. Expand
Neues Jb
  • Geol. Paläont. MH 12,
  • 1976