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来自北卡罗来纳州的全新世灰鲸新资料:迄今为止最完整的北大西洋灰鲸骨骼。

New Holocene grey whale () material from North Carolina: the most complete North Atlantic grey whale skeleton to date.

作者信息

Fleming Alyson, Pobiner Briana, Maynor Savannah, Webster David, Pyenson Nicholas D

机构信息

Forest and Wildlife Ecology, University of Wisconsin Madison, Madison, WI 53706, USA.

Biology and Marine Biology, University of North Carolina Wilmington, Wilmington, NC 28403 USA.

出版信息

R Soc Open Sci. 2022 Jul 20;9(7):220441. doi: 10.1098/rsos.220441. eCollection 2022 Jul.

Abstract

Skeletal remains and historical accounts indicate that grey whales () existed in the North Atlantic Ocean from the Pleistocene into the seventeenth century. Fossil and sub-fossil occurrences in this basin are rare, distributed from the east coast of the United States to Iceland and Europe. Here, we report an incomplete skeleton of a Holocene grey whale from Pender County, North Carolina, USA. This specimen represents a physically immature individual and is the most complete North Atlantic grey whale specimen reported to date. It comprises 42 cranial and postcranial elements, including the cranium, parts of the rostrum, both mandibles, both scapulae, humeri, radii and ulnae, most of the vertebral column anterior to the lumbar region and numerous ribs. Its provenance near the inlet of a large estuary is consistent with previous findings from the southeastern USA and parallels the species' habitat use in Baja California breeding and calving grounds in the North Pacific Ocean. Radiocarbon dating indicates an age of 827 ± 172 years before present. Cut marks on multiple skeletal elements indicate that the animal was butchered, suggesting some level of human exploitation of the species in the southeastern USA in the twelfth century, approximately 500 years prior to its extirpation in the North Atlantic.

摘要

骨骼遗骸和历史记载表明,灰鲸()在更新世至17世纪期间存在于北大西洋。该海域的化石和亚化石发现较为稀少,分布于美国东海岸至冰岛和欧洲。在此,我们报告了一具来自美国北卡罗来纳州彭德县的全新世灰鲸的不完整骨架。该标本代表一个身体未成熟的个体,是迄今为止报道的最完整的北大西洋灰鲸标本。它包括42块颅骨和颅后骨骼,包括头骨、吻部的部分、双侧下颌骨、双侧肩胛骨、肱骨、桡骨和尺骨、腰椎区域之前的大部分脊柱以及众多肋骨。其出土地点靠近一个大型河口的入口,这与美国东南部先前的发现一致,并且与该物种在北太平洋下加利福尼亚繁殖和产犊地的栖息地利用情况相似。放射性碳年代测定表明其年龄为距今827±172年。多个骨骼元素上的切割痕迹表明该动物被屠宰,这表明在12世纪,即该物种在北大西洋灭绝前约500年,美国东南部对该物种存在一定程度的人类利用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b88/9297022/2db703e14f0d/rsos220441f01.jpg

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