Discussion of early Cambrian “molluscs”

@article{Dr1975DiscussionOE,
  title={Discussion of early Cambrian “molluscs”},
  author={Dr. and L. Ellis and yoch},
  journal={Journal of the Geological Society},
  year={1975},
  volume={131},
  pages={661 - 662}
}
Dr. Ellis L. Yochelson writes: I proposed a list of features considered common to all or most molluscs (Yochelson 1961) in an attempt to define that phylum without reference to soft parts; there has been no discussion of this approach, nor of the features listed. As a prime consideration I would make a distinction between phosphatic and non-phosphatic hard parts: phosphatic hard parts do not occur in molluscs. The late Cambrian molluscan class Mattheva has no relationship to the various… Expand
The early history of the metazoa—a paleontologist’s viewpoint
TLDR
In the aggregate, modern data from molecular biology, palaeontology, and comparative embryology/morphology, having been revitalized by the introduction of new microscopy techniques, imply that the hypothesized planktotrophic gastrae-like common ancestor is the least likely of the diverse suggestions on the origins of the Metazoa. Expand
Platysolenites, other animal fossils, and the Precambrian-Cambrian transition in Norway
The late Precambrian and Lower Cambrian autochthonous sedimentary sequences in northern Norway and adjoining areas and their fossils are reconsidered, and the available specimens are re-described.Expand

References

SHOWING 1-6 OF 6 REFERENCES
Molluscan Phylogeny: The Paleontological Viewpoint
TLDR
The fossil record indicates that the Monoplacophora gave rise to the Gastropoda, Cephalopoda, Rostroconchia, and possibly Polyplacophoras, and that the Pelecypoda and Scaphopoda are derived from the Rostroconschia. Expand
Small shelly fossils of late Precambrian and early Cambrian age: a review of recent work
Stratigraphic sections in the high Precambrianlow Cambrian of Siberia are described. They have yielded the variety of fossils—archaeocyathids, gastropods, hyolithids, hyolithelminthids, poriferids,Expand
Notes on the class Coniconchia
TLDR
There seems to be no reason to question placement of Coniconchia as mollusks and there is no theoretical objection to basing a class or any other major category on fossils rather than living specimens. Expand
Biology of the Hyolitha
TLDR
Although the shell form and skeletal ultra-structure of hyoliths are of a molluscan type, the muscle insertions suggest that the hyolith cone is not homologous with the dorsal exoskeleton of primitive mollsuscs. Expand
Problems of the early history of the Mollusca (abstract)
  • Proc. 16th Int. Congress Zoology
  • 1961
Aspects of the biology ofHyolitha (Mollusca)
  • Lethaia