By Hou Xian-Guang, David J. Siveter, Derek J. Siveter, Richard J. Aldridge, Cong Pei-Yun, Sarah E. Gabbott, Ma Xiao-Ya, Mark A. Purnell, Mark Williams
The Chengjiang biota is among the so much notable fossil discoveries ever made. The Cambrian Fossils of Chengjiang is the 1st ebook in English to supply fossil fans with an outline of the fauna.
- 100 outstanding complete colour plates.
- First English language illustrated consultant to this crucial fauna.
- A must-have for all palaeontologists worldwide.
To see a suite of pictures from the publication, click the next hyperlink: http://www.blackwellpublishing.com/chengjiang
Read Online or Download The Cambrian Fossils of Chengjiang, China: The Flowering of Early Animal Life PDF
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Extra resources for The Cambrian Fossils of Chengjiang, China: The Flowering of Early Animal Life
Evidence for predation also comes from the occurrence of supposed fossil feces (coprolites) containing the remains of arthropod cuticle. Some of this cuticle probably comes from swimming arthropods, and anomalocaridids are likely producers of these coprolites. Other possible coprolites contain bradoriid valves, and these feces might well have been produced by the infaunal 27 PALEOECOLOGY OF THE CHENGJIANG BIOTA predatory priapulids as well as by larger arthropods (Chen & Vannier 2000, Babcock & Zhang 2001).
The relatively loose coiling indicates a certain rigidity of the filament comparable to that of the modern laminariacean Chorda, and the lack of branching is also a similarity with this group of brown algae, indicating a possible relationship. Key References 32 Chen & Erdtmann 1991, Chen et al. 1996. 2 Sinocylindra yunnanensis. 6; Maotianshan. 33 8 PHYLUM PORIFERA Sponges are multicellular organisms that lack the sophisticated organization of true Metazoa. Organs and a nervous system are absent and the few types of cells that they have are not organized into tissues.
The sponge body is oval to rounded and thin walled, with spongocoel constituting most of the space. Some specimens display scattered basal root tuft spicules and spicule rays occur around the flattened oscular margin that appears as a more or less subhorizontal termination of the skeleton. The skeleton contains two moderately well organized series of small, delicate spicules with rectangular patterns. One series of spicules has its prominent spicule axes parallel and normal to the principal axis of the sponge, and the second series has a more diagonal arrangement.
The Cambrian Fossils of Chengjiang, China: The Flowering of Early Animal Life by Hou Xian-Guang, David J. Siveter, Derek J. Siveter, Richard J. Aldridge, Cong Pei-Yun, Sarah E. Gabbott, Ma Xiao-Ya, Mark A. Purnell, Mark Williams