Phylogeny of Middle–Late Ordovician lituitid cephalopods based on cladistic analysis
Phylogeny of Middle–Late Ordovician lituitid cephalopods based on cladistic analysis
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DOI：
10.1080/14772019.2021.1944354
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发表时间：
2021-05
影响因子：
2.6
通讯作者：
X. Fang;Alexander Pohle;B. Kröger;M. Aubrechtová;C. Burrett;Yunbai Zhang;Yuandong Zhang
中科院分区：
文献类型：
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作者：
X. Fang;Alexander Pohle;B. Kröger;M. Aubrechtová;C. Burrett;Yunbai Zhang;Yuandong Zhang
系统发育研究在早古生代头足类中是罕见的。在这里，我们提出了第一个分支分析的顺序Lituitida的基础上发表的，以及一些新的，材料。三个分支内恢复lituitids，Sinoceras，Ancistroceras和Lituites的内组;前两个组对应于家庭Sinoceratidae，和后一个Lituitidae。拓扑结构表明，Sinoceratidae代表的基础分支，而Lituitidae代表一个单系，衍生支。此外，我们还描述了湖北（华南）中、上奥陶统出露良好的Lituitida目四属四种（其中三种为新定义）的新材料。描述的种有：演化Lituites evolutus Fang，Chen & Zhang，复合Sinoceras complexum Fang sp. nov.，中国南方的长角类（TyrioceraslongicameratumFangsp. nov.）和宜山喙角类（RhynchorthocerasyizanenseFangsp. nov.）长角类（TyrioceraslongicameratumFangsp. nov.）http://zoobank.org/urn:lsid:zoobank.org:pub:470C958E-26DD-4A2E-B0FC-4B2B178367FE
Phylogenetic studies are rare in early Palaeozoic cephalopods. Here, we present the first cladistic analysis of the order Lituitida based on published, as well as some new, material. Three clades are recovered within the ingroup of lituitids, Sinoceras, Ancistroceras and Lituites; the former two groups correspond to the family Sinoceratidae, and the latter one to the Lituitidae. The topology shows that the Sinoceratidae represents the basal branch, while the Lituitidae represents a monophyletic, derived clade. Furthermore, we describe new material of four species (three of which are newly defined) in four genera of the order Lituitida from the well-exposed, Middle to Upper Ordovician of Hubei (South China). The described species include Lituites evolutus Fang, Chen & Zhang, Sinoceras complexum Fang sp. nov., Tyrioceras longicameratum Fang sp. nov. and Rhynchorthoceras yizanense Fang sp. nov. Tyrioceras longicameratum from South China is the first reported occurrence of Tyrioceras in China, which has significant palaeogeographical implications. http://zoobank.org/urn:lsid:zoobank.org:pub:470C958E-26DD-4A2E-B0FC-4B2B178367FE