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The fossil record and the early evolution of the Metazoa
The appearance of the multicellular animals, or Metazoa, in the fossil record about 600 million years ago marks a revolution in the history of life, and data on rapidly radiating animal groups place early metazoan evolution in a new perspective. Expand
Wonderful Crucible@@@The Crucible of Creation: The Burgess Shale and the Rise of Animals.
This book discusses the discovery of the Burgess Shale, the search for new shale deposits, and the origins of phyllo, as well as other topics, including the origin of Hollywood and more. Expand
Middle Cambrian priapulids and other soft-bodied fossils from Utah and Spain
The fossil priapulid worms Ottoia prolifica, Selkirkia willoughbyi n. sp., Selkirkia spencei, and Selkirkia sp. are illustrated from the Middle Cambrian of Utah. New records of O. pro ca from theExpand
The Middle Cambrian metazoan Wiwaxia corrugata (Matthew) from the Burgess Shale and Ogygopsis Shale, British Columbia, Canada
While the possibilities of convergence cannot be eliminated, there appears to be a significant similarity between Wiwaxia and molluscs that suggests a related derivation from a turbellarian ancestor. Expand
More soft-bodied animals and algae from the Middle Cambrian of Utah and British Columbia
Remains of noncalcareous algae and soft-bodied metazoans from Middle Cambrian strata of Utah (Spence, Wheeler, and Marjum formations) and British Columbia (Stephen Formation) provide further evidenceExpand
Lower Cambrian vertebrates from south China
The discovery of two distinct types of agnathan from the Lower Cambrian Chengjiang fossil-Lagerstätte imply that the first agnathans may have evolved in the earliest Cambrian, with the chordates arising from more primitive deuterostomes in Ediacaran times (latest Neoproterozoic, ∼555 Myr BP), if not earlier. Expand
The origins and relationships of lower invertebrates
The lower invertebrates - from sponges to annelids - have been investigated for over a century, but there are fundamental problems that are only now coming under scrutiny. This book gives freshExpand
New Palaeoscolecidan Worms from the Lower Cambrian: Sirius Passet, Latham Shale and Kinzers Shale
These finds from Greenland provide further evidence that palaeoscolecidans possessed a complex anterior introvert directly comparable to a number of priapulid-like taxa from other Burgess Shale-type assemblages. Expand