Debate About Cambrian Lophotrochozoans
Since 1990 there has been intense debate among paleontologists about the evolution in the Early Cambrian period of the "super-phylum" Lophotrochozoa, which is thought to include the modern molluscs, annelid worms and brachiopods, as well as their evolutionary "aunts" and "cousins".
Read more about Debate About Cambrian Lophotrochozoans: Organisms Featured in The Debate, Suggested Phylogenies, Wiwaxia, Halkieriids and Siphogonotuchids
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“Like man and wife who nightly keep
Inconsequent debate in sleep
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—Robert Graves (1895–1985)