A new toxodont (Mammalia, Panperissodactyla, Notoungulata) from the Oligocene of Patagonia, Argentina, and systematic considerations on the paraphyletic 'Notohippidae'

Martinez Gaston; Dozo Maria T.; Gelfo Javier N.; Ciancio Martin R.; Gonzalez-Jose Rolando

首页> 外文期刊>Journal of Systematic Palaeontology >A new toxodont (Mammalia, Panperissodactyla, Notoungulata) from the Oligocene of Patagonia, Argentina, and systematic considerations on the paraphyletic 'Notohippidae'

【24h】

A new toxodont (Mammalia, Panperissodactyla, Notoungulata) from the Oligocene of Patagonia, Argentina, and systematic considerations on the paraphyletic 'Notohippidae'

机译：来自巴塔哥尼亚，阿根廷，阿根廷少妇的新毒素（Mammalia，Panperissodactyla，Notoungulata）和对术后的解释性'Notohippidae的系统考虑

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Notoungulates were the most diverse group of South American native ungulates during the Cenozoic. They ranged from small rodent-like to heavy rhino-like forms and, despite this morphological diversity, their monophyly is widely accepted. Within Notoungulata, Typotheria and Toxodontia (the two major clades) are well supported, whereas phylogenetic relationships between early diverging lineages (formerly grouped as 'Notioprogonia') are still a matter of debate. Within Toxodontia, 'Notohippidae' sensu Simpson (1967) is a paraphyletic group lacking systematic consensus and represented by small to medium-sized taxa from the late Eocene to early/middle Miocene, but that were especially diverse during the late Oligocene. In this context, we describe a new toxodont (Teushentherium camaronensis gen. et sp. nov.), found at Barrancas Blancas, an Oligocene locality in the south-east of Chubut (Patagonia, Argentina). It is represented by the anterior portion of the skull (palate and anterior snout) and the associated horizontal rami of the mandible. A phylogenetic analysis places the new taxon as closely related to taxa traditionally regarded as 'Notohippidae'. In addition, extensive taxonomic sampling allowed us to assess phylogenetic relationships among other representatives. As expected, only Homalodotheriidae, Leontiniidae and Toxodontidae were recovered as monophyletic groups, whereas neither 'Notohippidae' nor 'Isotemnidae' were supported. We also identified a clade (sister to Homalodotheriidae) for which we propose the name Eutoxodontia. It includes 'Notohippidae' sensu Simpson, Leontiniidae and Toxodontidae, and provides a more accurate definition for middle and later diverging toxodonts, avoiding terminology such as 'advanced' or 'derived'. We hope to contribute to the stabilization of toxodontian taxonomy, to highlight the main gaps in this respect, and to promote future contributions dealing with this intricate issue.

机译：Notounculates是新生代期间是最多样化的南美原产人联合国。它们从小啮齿动物样到重的犀牛样形式，尽管这种形态样，但它们的一般性被广泛接受。在NoteNgulata，打字炎和毒素（两种主要的植物）（两个主要的曲线）都得到了很好的支持，而早期发散谱系之间的系统发育关系（以前被分组为“Notioprogonia”）仍然是辩论问题。在Toxodontia内，'Notohippidae'Secsu Simpson（1967）是一个缺乏系统共识的助性群，由中小期从后期的中小型中小型中小型分类，但在晚寡领世中特别多样化。在这种情况下，我们描述了一种新的毒素（Teushentherium camaronensis Gen。ET SP。11月），在Barrancas Blancas发现，在Chubut东南部（巴塔哥尼亚，阿根廷巴塔哥尼亚），在Barrancas Blancas。它由颅骨（口感和前鼻子）的前部和下颌骨的相关水平拉米表示。系统发育分析将新的分类交往与传统相关的分类群密切相关，传统上被视为“notohippidae”。此外，广泛的分类法制案允许我们评估其他代表之间的系统发育关系。正如预期的那样，只能回收Homalodotheriidae，Leontinoidae和Toxodontidae作为单胺基团，而“Notohippidae”也不支持“IsotemnIdae”。我们还确定了一个思想家（姐姐到Homalodotheriidae），我们提出了Eutoxodontia的名称。它包括'notohippidae'sensu simpson，Leontiniadae和toxodontidae，并为中间和后来发散毒性的更准确的定义，避免术语，例如“高级”或“派生”。我们希望为毒素稳定，突出这方面的主要差距，促进处理这种复杂问题的未来贡献。

著录项

来源
《Journal of Systematic Palaeontology》 |2020年第24期|1995-2013|共19页
作者
Martinez Gaston; Dozo Maria T.; Gelfo Javier N.; Ciancio Martin R.; Gonzalez-Jose Rolando;
展开▼
作者单位

Univ Nacl Cordoba Fac Ciencias Exactas Consejo Nacl Invest Cient & Tecn Godoy Cruz 2290 C1425FQB Caba Argentina|Univ Nacl Cordoba Fac Ciencias Exactas Fis & Nat Museo Paleontol Velez Sarsfield 249 X5000JJC Cordoba Argentina;

Univ Nacl Cordoba Fac Ciencias Exactas Consejo Nacl Invest Cient & Tecn Godoy Cruz 2290 C1425FQB Caba Argentina|CCT CONICET CENPAT Inst Patagon Geol & Paleontol Brown 2915 U9120ACD Puerto Madryn Argentina;

Univ Nacl Cordoba Fac Ciencias Exactas Consejo Nacl Invest Cient & Tecn Godoy Cruz 2290 C1425FQB Caba Argentina|Univ Nacl La Plata Fac Ciencias Nat & Museo Museo La Plata Div Paleontol Vertebrados Paseo Bosque S-N B1900FWA La Plata Argentina;

Univ Nacl Cordoba Fac Ciencias Exactas Consejo Nacl Invest Cient & Tecn Godoy Cruz 2290 C1425FQB Caba Argentina|Univ Nacl La Plata Fac Ciencias Nat & Museo Museo La Plata Div Paleontol Vertebrados Paseo Bosque S-N B1900FWA La Plata Argentina|UNLP FCNyM Museo La Plata Lab Morfol Evolut & Desarrollo MORPHOS La Plata Argentina;

Univ Nacl Cordoba Fac Ciencias Exactas Consejo Nacl Invest Cient & Tecn Godoy Cruz 2290 C1425FQB Caba Argentina|CCT CONICET CENPAT Inst Patagon Ciencias Sociales & Humanas Brown 2915 U9120ACD Puerto Madryn Argentina;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类
关键词
Notoungulata; Toxodontia; 'Notohippidae'; Barrancas Blancas; Chubut; Oligocene;

机译：noteNgulata;toxodontia;'notohippidae';白色沟壑;胆汁;oligocene;

A new toxodont (Mammalia, Panperissodactyla, Notoungulata) from the Oligocene of Patagonia, Argentina, and systematic considerations on the paraphyletic 'Notohippidae'

摘要

著录项

相关主题

期刊订阅