A new dipnoan genus from the Middle Devonian of Huize, Yunnan, China

IF 2.2 2区地球科学 Q3 EVOLUTIONARY BIOLOGY

Journal of Systematic Palaeontology Pub Date : 2021-09-17 DOI:10.1080/14772019.2022.2042409

Yanchao Luo, Xindong Cui, Tuo Qiao, Min Zhu

引用次数: 0

Abstract

A new genus and species of tooth-plated lungfishes, Dianodipterus huizeensis gen. et sp. nov., is described from the Qujing Formation (late Eifelian, Middle Devonian) of Huize County, Qujing, north-eastern Yunnan, China. It differs from other lungfishes in the small proportion of the tooth-bearing part on the pterygoid (less than one-quarter), the extensively developed anteromedial edentulous portion of the pterygoid, and tooth rows few in number (only four). Phylogenetic analysis reveals that Dianodipterus is more plesiomorphic than Dipterus, yet crownward of Melanognathus. As the ninth Devonian lungfish genus from China, the new taxon displays a novel schema of lungfish dentition and increases the diversity of early lungfishes. http://zoobank.org/urn:lsid:zoobank.org:pub:207B0E6E-EBBF-4E92-83F4-78FDAD6EBB60

查看原文本刊更多论文

云南会泽中泥盆世一新属

云南东北曲靖会泽县曲靖组(中泥盆世eifel世晚期)有齿肺鱼Dianodipterus huizeensis gen. et sp. nov.一新属和新种。它与其他肺鱼的不同之处在于翼状骨上有牙齿的部分所占的比例很小(不到四分之一)，翼状骨的前内侧无牙部分发育广泛，齿列数量很少(只有四列)。系统发育分析表明，Dianodipterus比Dipterus更接近半形，但在Melanognathus的上方。作为中国泥盆纪第9个肺鱼属，这一新分类群显示了一种新的肺鱼齿列模式，增加了早期肺鱼的多样性。http://zoobank.org/urn:lsid:zoobank.org:pub:207B0E6E-EBBF-4E92-83F4-78FDAD6EBB60

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Systematic Palaeontology 地学-古生物学

CiteScore

5.30

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Systematic Palaeontology publishes papers that provide novel and impactful results in phylogenetics and systematics and that use these results in ways that significantly advance rigorous analyses of palaeogeography, palaeobiology, functional morphology, palaeoecology or biostratigraphy. Papers dealing with theoretical issues or molecular phylogenetics are also considered if they are of relevance to palaeo-systematists. Contributions that include substantial anatomical descriptions, descriptions of new taxa or taxonomic revisions are welcome, but must also include a substantial systematics component, such as a new phylogeny or a revised higher-level classification. Papers dealing primarily with alpha-taxonomic descriptions, the presentation of new faunal/floristic records or minor revisions to species- or genus-level classifications do not fall within the remit of the journal.