Download e-book for kindle: Evolution of Fossil Ecosystems by Paul A. Selden, John R. Nudds

By Paul A. Selden, John R. Nudds

ISBN-10: 1840760400

ISBN-13: 9781840760408

ISBN-10: 1840765461

ISBN-13: 9781840765465

"Major advances in our knowing of the background of lifestyles in the world have resulted from the research of awfully well-preserved fossil websites (Lagerstätten). learn of such websites from around the globe and from varied sessions in geological time offers a pretty whole photo of the evolution of ecosystems down the a long time ... The authors have introduced jointly succinct summaries of 14 of the better-known Read more...

content material: Ediacara --
The Burgess Shale --
The Soom Shale --
The Hunsrück Slate --
The Rhynie Chert --
Mazon Creek --
Grès à Voltzia --
The Holzmaden Shale --
The Morrison Formation --
The Solnhofen Limestone --
The Santana and Crato Formations --
Grube Messel --
Baltic amber --
Rancho los angeles Brea.

Succinct summaries of 14 of the better-known fossil Lagerstatten, superbly illustrated all through through over 250 color photos and diagrams, of worth to a variety of scholars and Read more...

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Extra info for Evolution of Fossil Ecosystems

Example text

Fragments of terrestrial vascular plants also occur, washed out to sea from the coast, including members of the rhyniophytes (see Chapter 5). Trace fossils. , 1999). 65 65 The phacopid trilobite Chotecops sp. (DBMB). 4 in). 66 Palaeoecology of the Hunsrück Slate The Hunsrück Slate, like the Burgess Shale (Chapter 2), represents a marine, benthic community living in, on, or just above the muddy seabed of an offshore basin situated at about 20°S. Bottom waters were oxygenated and subjected to currents and, as at Burgess, the presence of photosynthesizing algae suggests that the depth was certainly less than 200 m (650 ft).

Fourteen orthocone cephalopods from the Keurbos farm locality were described by Gabbott (1999) (43). All specimens preserve the body chamber and some also retain the phragmocone (the rest of the shell, which contains gas chambers). 7 in) at its widest point, so the largest specimen would have been just less than 350 mm (14 in) long. All are greatly flattened and preserved only as moulds because the original aragonite has dissolved. The adhering epizoans have already been described, but there are other features of the orthocones which are exceptionally preserved.

1983), and that animal was a chordate, perhaps related to the primitive jawless amphioxus and hagfish. The Soom Shale conodont animal, Promissum pulchrum, was first described in 1986 as a very early land plant which could hold an important position in the evolution of land plants (the name translates as ‘beautiful promise’) (Kovács-Endrödy, 1987). The reason that Promissum was mistaken for a plant is that, while conodonts are most commonly found as isolated elements after acid-digestion of rocks, when they are large enough to be seen on bedding planes, conodont elements are sometimes found arranged into apparatuses which are thought to represent feeding structures.

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Evolution of Fossil Ecosystems by Paul A. Selden, John R. Nudds

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