Comparative anatomy, phylogeny, and systematics of the Miocene giraffid <i>Decennatherium pachecoi</i> Crusafont, 1952 (Mammalia, Ruminantia, Pecora): State of the art
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<i>Decennatherium pachecoi</i> Crusafont, 1952, is one of two giraffid species described from the Miocene of the Iberian Peninsula. This species is recovered exclusively from Vallesian faunas (MN9–10, late Miocene, 10–11 Ma). Despite being relatively well represented in the fossil record, except for the skull and ossicones, the complete vertebral column, and part of the upper dentition, its systematics and phylogenetic position among giraffids are the subject of debate. We update our knowledge of <i>D. pachecoi</i>, revising all Spanish material assigned to this species, as well as previously undescribed fossils. We reassess the systematics of <i>Decennatherium</i>, including its potential relationship with the second Iberian giraffid, the early Turolian <i>Birgerbohlinia</i> Crusafont, 1952, by means of the first cladistic analysis of the Giraffidae that includes <i>Decennatherium</i> together with the most relevant African and Eurasian taxa, both fossil and extant. Our results link <i>Decennatherium</i> with a ‘samothere’ clade, whereas <i>Birgerbohlinia</i> is nested within a ‘sivathere’ clade, thus refuting a previously assumed direct relationship between the two Spanish forms. Finally, we discuss some other possible finds of the genus <i>Decennatherium</i> in Greece, Turkey, and Iran. SUPPLEMENTAL DATA—Supplemental materials are available for this article for free at www.tandfonline.com/UJVP Citation for this article: Rios, M., I. M. Sánchez, and J. Morales. 2016. Comparative anatomy, phylogeny, and systematics of the Miocene giraffid <i>Decennatherium pachecoi</i> Crusafont, 1952 (Mammalia, Ruminantia, Pecora): State of the art. Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2016.1187624.
帕氏德肯鹿（*Decennatherium pachecoi*）Crusafont，1952，是伊比利亚半岛中新世地层中被正式描述的两种长颈鹿科物种之一。该物种仅发现于瓦莱斯期动物群（MN9–10，晚中新世，10~11 Ma）中。尽管其化石记录整体相对丰富，但头骨、骨角（ossicones）、完整脊柱以及部分上齿列的标本仍较为匮乏，因此其在长颈鹿科中的分类学地位与系统发育位置仍存在广泛争议。 我们对帕氏德肯鹿的现有认知进行了系统性更新，修订了所有归入该物种的西班牙馆藏标本，并补充了此前未被正式发表描述的化石材料。我们重新评估了德肯鹿属（*Decennatherium*）的分类学地位，包括其与第二种伊比利亚长颈鹿科物种——早图罗利期比尔格博林鹿（*Birgerbohlinia*）Crusafont，1952的潜在亲缘关系；本次研究是首次在长颈鹿科分支系统学分析中纳入德肯鹿属，并覆盖了最具代表性的非洲、欧亚类群，涵盖化石类群与现生类群。 研究结果显示，德肯鹿属隶属于「萨摩兽类（samothere）」演化支，而比尔格博林鹿则嵌套于「西瓦兽类（sivathere）」演化支中，这一结论驳斥了此前学界认为这两种西班牙长颈鹿类存在直接亲缘关系的假设。 最后，我们讨论了在希腊、土耳其与伊朗发现的德肯鹿属其他潜在化石标本。 补充数据——本文的补充材料可通过网址www.tandfonline.com/UJVP免费获取。 本文引用格式：Rios, M.、I. M. Sánchez 及 J. Morales. 2016. 《中新世长颈鹿科帕氏德肯鹿（*Decennatherium pachecoi*）Crusafont, 1952（哺乳纲、反刍亚目、牛下目（Pecora））的比较解剖学、系统发育与分类学：研究现状》. 《脊椎动物古生物学杂志》. DOI: 10.1080/02724634.2016.1187624.
