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Cerion uva gouldi, a new fossil subspecies from Aruba (Gastropoda, Pulmonata, Cerionidae)
Proceedings of the Biological Society of Washington ( IF 0.5 ) Pub Date : 2019-04-11 , DOI: 10.2988/18-00013
M. G. Harasewych 1
Affiliation  

Abstract. Cerion uva gouldi is described as a new subspecies to include only fossil and subfossil Cerion uva from Aruba. The name Cerion uva arubanum Baker, 1924 had previously been applied to all Cerion uva from Aruba, living and fossil. A recent molecular study has shown that Cerion uva arubanum, a taxon based on living type material from Aruba, is a synonym of Cerion uva uva (Linnaeus, 1758), with which it shares a preponderance of mitochondrial haplotypes. Cerion uva was widespread on Aruba during the Pleistocene, but became extinct on that island and was subsequently reintroduced from a population near Willemstad in eastern Curaçao by humans within the past 800 years. Earlier authors had recognized that fossil Cerion from Aruba differ in morphology from those living on the island today, with fossils being more similar to specimens from western Curaçao and Bonaire, while those living on Aruba today are most similar to Cerion uva uva from eastern Curaçao. Cerion uva gouldi may be distinguished from living populations of Cerion on Aruba on the basis of its cylindrical rather than ovate shell shape, its more closely spaced whorls, and its round aperture with a uniform rather than anteriorly expanded parietal rim.

中文翻译:

Cerion uva gouldi,来自阿鲁巴岛的一个新化石亚种(腹足纲、Pulmonata、Cerionidae)

摘要。Cerion uva gouldi 被描述为一个新的亚种,仅包括来自阿鲁巴岛的化石和亚化石 Cerion uva。名称 Cerion uva arubanum Baker, 1924 以前曾被应用于所有来自阿鲁巴岛的 Cerion uva,包括活体和化石。最近的一项分子研究表明,Cerion uva arubanum 是一种基于来自阿鲁巴岛的活体材料的分类群,是 Cerion uva uva (Linnaeus, 1758) 的同义词,与它共享线粒体单倍型的优势。Cerion uva 在更新世期间广泛分布于阿鲁巴岛,但在该岛上灭绝,随后在过去 800 年间被人类从库拉索岛东部威廉斯塔德附近的人群中重新引入。较早的作者已经认识到,来自阿鲁巴岛的 Cerion 化石在形态上与今天生活在岛上的那些不同,化石更类似于库拉索岛西部和博内尔岛的标本,而今天生活在阿鲁巴岛的化石与库拉索岛东部的 Cerion uva uva 最相似。Cerion uva gouldi 可能与 Aruba 上的 Cerion 活种群区别开来,因为它是圆柱形而不是卵形的壳形状,它的轮距更紧密,并且它的圆形孔具有均匀的而不是向前扩展的顶缘。
更新日期:2019-04-11
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