干旱区生态环境知识资源中心(Arid): What do we know about the fossil record of pinnipeds? A historiographical investigation

Arid

DOI	10.1098/rsos.191394
	What do we know about the fossil record of pinnipeds? A historiographical investigation
	Valenzuela-Toro, Ana 1; Pyenson, Nicholas D.2,3
通讯作者	Valenzuela-Toro, Ana
来源期刊	ROYAL SOCIETY OPEN SCIENCE
ISSN	2054-5703
出版年	2019
卷号	6 期号:11
英文摘要	The fossil record of pinnipeds (seals, fur seals and walruses) is globally distributed, spanning from the late Oligocene to the Holocene. This record shows a complex evolutionary history that could not otherwise be inferred from their extant relatives, including multiple radiations and iterative ecomorphological specializations among different lineages, many of which are extinct. The fossil record of pinnipeds is not uniformly represented in space and time, however, leaving some gaps in our knowledge. We performed a historiographical investigation of the published fossil record of pinnipeds based on the information available in the Paleobiology Database, with the aim to broadly characterize and evaluate it from a taxonomic, geographical and temporal perspective. We identified major trends, strengths and weaknesses of the pinniped fossil record, including potential biases that may affect our interpretations. We found that 39% of the record corresponds to extant taxa, which are essentially from the Pleistocene and Holocene. There is a larger record from the Northern Hemisphere, suggesting biases in sampling and collection effort. The record is not strongly biased by sedimentary outcrop bias. Specifically, for extinct species, nearly half of them are represented by a single occurrence and a large proportion have type specimens consisting of single isolated postcranial elements. While the pinniped fossil record may have adequate temporal and taxonomic coverage, it has a strong geographical bias and its comparability is hindered by the incompleteness of type specimens. These results should be taken into account when addressing patterns of their past diversity, evolutionary history and paleoecology.
英文关键词	fossil record pinnipeds marine mammals historiographical revision paleobiology database biases in the fossil record
类型	Article
语种	英语
国家	USA
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000504006900058
WOS关键词	NEOGENE PURISIMA FORMATION ; SAN-MIGUEL ISLAND ; SEA LIONS ; MORPHOMETRIC-ANALYSIS ; ATACAMA DESERT ; MARINE MAMMALS ; SAMPLING BIAS ; FUR SEALS ; CARNIVORA ; MIOCENE
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
EI主题词	2019-11-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310542
作者单位	1.Univ Calif Santa Cruz, Dept Ecol & Evolutionary Biol, Coastal Biol Bldg,130 McAllister Way, Santa Cruz, CA 95060 USA; 2.Smithsonian Inst, Dept Paleobiol, Natl Museum Nat Hist, POB 37012, Washington, DC 20013 USA; 3.Burke Museum Nat Hist & Culture, Dept Paleontol & Geol, Seattle, WA 98105 USA
推荐引用方式 GB/T 7714	Valenzuela-Toro, Ana,Pyenson, Nicholas D.. What do we know about the fossil record of pinnipeds? A historiographical investigation[J],2019,6(11).
APA	Valenzuela-Toro, Ana,&Pyenson, Nicholas D..(2019).What do we know about the fossil record of pinnipeds? A historiographical investigation.ROYAL SOCIETY OPEN SCIENCE,6(11).
MLA	Valenzuela-Toro, Ana,et al."What do we know about the fossil record of pinnipeds? A historiographical investigation".ROYAL SOCIETY OPEN SCIENCE 6.11(2019).