气候变化领域集成服务门户(CCPortal): Slime travelers: Early evidence of animal mobility and feeding in an organic mat world

CCPortal

DOI	10.1111/gbi.12351
	Slime travelers: Early evidence of animal mobility and feeding in an organic mat world
	Evans S.D.; Gehling J.G.; Droser M.L.
发表日期	2019
ISSN	14724677
起始页码	490
结束页码	509
卷号	17 期号:5
英文摘要	Mobility represents a key innovation in the evolution of complex animal life. The ability to move allows for the exploration of new food sources, escapes from unfavorable environmental conditions, enhanced ability to exchange genetic material, and is one of the major reasons for the diversity and success of animal life today. The oldest widely accepted trace fossils of animal mobility are found in Ediacaran-aged rocks (635–539 Ma). The earliest definitive evidence for movement associated with exploitation of resources for feeding occurs in the White Sea assemblage of the Ediacara Biota—macroscopic, soft-bodied fossils of Ediacaran age. Here, we evaluate potential support for mobility in dickinsoniomorphs, presenting new data regarding abundant Dickinsonia and associated trace fossils from the Ediacara Member, South Australia. Results quantitatively demonstrate that Dickinsonia was capable of mobility on relatively short, ecological timescales. This organism was bilaterally symmetrical, likely moved via muscular peristalsis, and left trace fossils due to active removal of the organic mat related to feeding. Analogous structures associated with Yorgia indicate that it was also mobile and fed in a similar manner. Morphological evidence suggests that two other modular taxa, Andiva and Spriggina, were able to move but did not feed in a manner that impacted the organic mat. Together, these data suggest that mobility was present in multiple disparate bilaterally symmetrical Ediacaran taxa. © 2019 John Wiley & Sons Ltd
关键词	biota Ediacaran feeding fossil assemblage microbial mat mobility movement organic matter timescale trace fossil Arctic Ocean Australia South Australia White Sea Animalia Bilateria Dickinsonia Yorgia animal feeding behavior fossil invertebrate movement (physiology)physiology South Australia Animals Feeding Behavior Fossils Invertebrates Movement South Australia
语种	英语
来源机构	Geobiology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133246
推荐引用方式 GB/T 7714	Evans S.D.,Gehling J.G.,Droser M.L.. Slime travelers: Early evidence of animal mobility and feeding in an organic mat world[J]. Geobiology,2019,17(5).
APA	Evans S.D.,Gehling J.G.,&Droser M.L..(2019).Slime travelers: Early evidence of animal mobility and feeding in an organic mat world.,17(5).
MLA	Evans S.D.,et al."Slime travelers: Early evidence of animal mobility and feeding in an organic mat world".17.5(2019).