A new genus of kangaroo (Marsupialia, Macropodidae) from the late Pleistocene of Papua New Guinea

IF 0.8 4区 综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES Transactions of the Royal Society of South Australia Pub Date : 2022-06-29 DOI:10.1080/03721426.2022.2086518
Isaac A. R. Kerr, G. Prideaux
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引用次数: 1

Abstract

ABSTRACT The extinct macropodine kangaroo, Protemnodon nombe, was first described in 1983 on the basis of two partial dentaries from a late Pleistocene deposit in Nombe Rockshelter, Papua New Guinea. As part of a review of Protemnodon, we noted that P. nombe differed from other members of the genus in several ways that pointed to a position outside of that genus and indeed all other known macropodine genera. The taxon possesses a unique combination of attributes of the dentary and lower dentition, including lower molars with a slight postmetacristid, a small postprotocristid and a gently S-shaped protolophid crest. The proportions of masticatory muscle insertion areas, including a broad masseteric canal for the deep masseter, resemble those of sthenurines, suggesting adaptation to tougher browsed vegetation than other New Guinean macropodines. A parsimony analysis suggests a divergence near the base of the Macropodinae, potentially in the early late Miocene. LSID of publication: urn:lsid:zoobank.org:pub:1458D336-3180-41FE-9DF5-DFAED7971807
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巴布亚新几内亚晚更新世袋鼠一新属(有袋动物,大足动物科)
已灭绝的巨足袋鼠Protemnodon nombe于1983年首次在巴布亚新几内亚nombe Rockshelter晚更新世沉积物的两个部分齿状体的基础上被描述。作为对原齿兽的回顾的一部分,我们注意到P. nombe在几个方面与该属的其他成员不同,这些方面指向该属之外的位置,实际上是所有其他已知的大足类属。该分类群具有齿列和下齿列特征的独特组合,包括下磨牙具有轻微的后骨裂、小的后原骨裂和微s形的原齿嵴。咀嚼肌插入区域的比例,包括深咬肌的宽咬肌管,与sthenurines相似,表明与其他新几内亚大足类动物相比,它们适应了更坚硬的被浏览的植被。简约分析表明,在大足类的基部附近,可能在中新世晚期早期出现了分化。出版物的LSID: urn: LSID:zoobank.org:pub:1458D336-3180-41FE-9DF5-DFAED7971807
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来源期刊
CiteScore
1.40
自引率
12.50%
发文量
17
审稿时长
>12 weeks
期刊介绍: Published since 1880, the Transactions of the Royal Society of South Australia is a multidisciplinary journal that aims to publish high quality, peer-reviewed papers of particular relevance to Australasia. There is a particular focus on natural history topics such as: botany, zoology, geology, geomorphology, palaeontology, meteorology, geophysics, biophysics, soil science and environmental science, and environmental health. However, the journal is not restricted to these fields, with papers concerning epidemiology, ethnology, anthropology, linguistics, and the history of science and exploration also welcomed. Submissions are welcome from all authors, and membership of the Royal Society of South Australia is not required. The following types of manuscripts are welcome: Reviews, Original Research Papers, History of Science and Exploration, Brief Communications, Obituaries.
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