CAMBRIAN NARAOIIDS (ARTHROPODA): MORPHOLOGY, ONTOGENY, SYSTEMATICS, AND EVOLUTIONARY RELATIONSHIPS

From: Journal of Paleontology | Date: September 1, 2007| Author: Erwin, D H; Shu, D-G; Zhang, X-L | Copyright information

ABSTRACT -

Naraoiids. defined as lightly sclerotized arthropods with a dimidiate tergum of two sclerites separated by a single transverse articulation, have been found in the Cambrian and Silurian. During the Cambrian they had a wide distribution coinciding with trilobite realms. This pattern may be related to the breakup of a Neoproterozoic supercontinent, probably Pannotia, which implies that naraoiids originated before the Cambrian "explosion." Based on new observations on the origi...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and journal articles from HighBeam Research

A REDESCRIPTION OF A RARE CHORDATE, METASPRIGGINA WALCOTTI SIMONETTA AND INSOM, FROM THE BURGESS SHALE (MIDDLE CAMBRIAN), BRITISH COLUMBIA, CANADA
Journal of Paleontology ; INTRODUCTION UNTIL RECENTLY, our understanding of the earliest history of the fish has been fragmentary in terms of the fossil record and conjectural with respect to many details of phylogeny. Fortunately, significant new information has become available in recent years, most notably from the
Smithsonian exhibit merits special interest.
Eagle (Bryan, TX) ; ... e-mail address is jim.butler@theeagle.com. Copyright (c) 2006, The Eagle, Bryan, Texas Distributed by McClatchy-Tribune Business News. For reprints, email tmsreprints@permissionsgroup.com, call 800-374-7985 or 847-635-6550, send a fax to 847-635-6968, or write ...
Showdown on the Burgess Shale: The challenge / the reply
Natural History ; Almost a decade ago, Harvard paleontologist and Natural History columnist Stephen Jay Gould published Wonderful Life: The Burgess Shale and the Nature of History (TW W Norton and Company, 1989). In addition to chronicling ongoing work on the Burgess creatures, Gould used these fascinating fossils
Fletcher to make history in Rockies
Winnipeg Free Press ; ... quadriplegics living in his west Winnipeg riding. Leading the seven-person Sherpa team is Bob Faulkner, who has taken part in eight Eco-Challenges -- adventure races in remote areas of the world -- and the Iditarod sled race. -- CanWest News Service
What has 14 stilts, seven tentacles and no eyes? (Cambrian fossils in Burgess shale)
The Economist (US) ; LIKE the laws of Moses, the history of life is a written in rocks. But the print quality is appalling. Pateontologists, who try to piece together the past from the few fossils that remain, spend a great deal of time trying to decipher it. The problem is that in the past few billion years only a
Wonderful Life: the Burgess Shale and the Nature of History.
The Economist (US) ; GOD, as Mies van der Rohe once said, is Gin the details. His dictum applies as much to palaeontology as to architecture; except that, for explanatory purposes at least, most palaeontologists prefer Darwin to God. It was through the study of details, like the shapes of local finches' beaks on the
THE CRAPSHOOT OF HISTORY
The Boston Globe ; Stephen Jay Gould has written his best book yet. "Wonderful Life: The Burgess Shale and the Nature of History" is the story of some remarkable fossils from the mountains of western Canada, and a sprightlier introduction to the history, methods and philosophy of science would be hard to imagine.
Tracing the earth's stunning history; The Crucible of Creation: The Burgess Shale and the rise of the animals . By Simon Conway Morris, (Oxford University Press). Reviewed by.
The Birmingham Post (England) ; In the rush of modern biology, with new genes reported day by day, with prospects of cloning, of finding cures for previously incurable conditions, perhaps even of extending the biblical span, it is greatly refreshing to find a book which has a perspecti ve of a billion years and more. How and
The uses of diversity. (fossils of different phyla fossils from Burgess Shale)
The Economist (US) ; ARMED with microscoopes, miniature drills and an infinite capacity for taking pains, a few palaeontologists have redrawn their profession's picture of early life. For several decades they have been studying superbly preserved fossils from the rocks of the Burgess shale, found in the Canadian
Heirs of ancient enigmas. (Ediacara fauna research) (Brief Article)
Science News ; Living organisms have populated the Earth for more than 3.5 billion years, but for most of that time they remained exceptionally small. Then sometime during the late Proterozoic era, about 580 million years ago, life got big. In rocks dating from this time, paleontologists have found a wide variety