Hirsutisoma grimaldii sp. nov., a ca. 99-million-year-old ricinuleid (Primoricinulei, Hirsutisomidae) from Cretaceous Burmese amber with a corticolous, scansorial lifestyle
Hirsutisoma grimaldii sp. nov., a ca. 99-million-year-old ricinuleid (Primoricinulei, Hirsutisomidae) from Cretaceous Burmese amber with a corticolous, scansorial lifestyle
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格里马尔迪多毛虫
DOI：
10.11646/palaeoentomology.5.5.11
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
PRENDINI, LORENZO
中科院分区：
文献类型：
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作者：
BOTERO-TRUJILLO, RICARDO;DAVIS, STEVEN R.;MICHALIK, PETER;PRENDINI, LORENZO
Ricinulei Thorell， 1876年，是蛛形纲的一个目，目前在新旧世界有103种现存的蛛形纲。石炭纪（约305-319 Ma）和白垩纪（约99 Ma）的化石记录也显示了该目。本文从白垩纪缅甸琥珀中保存的标本中描述了2015年Primoricinulei Wunderlich亚目的新灭绝物种Hirsutisoma grimaldii sp. nov.。该标本是一个保存完好的成年雄性，其中几个分类信息结构可见，使新物种与2017年的Hirsutisoma bruckschi Wunderlich区分开来，后者是唯一已知的雄性同系物。这一描述使白垩纪蓖麻属的种类增加到6种。一份比较表记录了这一谱系中不同物种的形态差异。提出了关于该物种的古生态学和功能形态的假设，并通过外推，提出了其他原始物种。证据表明，原始核是皮质的，掠食性捕食者。
Ricinulei Thorell, 1876 is an order of Arachnida currently represented in the New and Old Worlds by 103 living species. The order is also represented in the fossil record from the Carboniferous (ca. 305–319 Ma) and the Cretaceous (ca. 99 Ma) periods. In the present contribution, Hirsutisoma grimaldii sp. nov., a new extinct species of the suborder Primoricinulei Wunderlich, 2015, is described from a specimen preserved in Cretaceous Burmese amber. The specimen is a well-preserved adult male in which several taxonomically informative structures are visible, allowing the new species to be differentiated from Hirsutisoma bruckschi Wunderlich, 2017, the only other congener for which a male is known. This description raises the number of Cretaceous Ricinulei species to six. A comparative table documents morphological differences among the various species of this lineage. Hypotheses concerning the paleoecology and functional morphology of this species and, by extrapolation, other primoricinuleids, are presented. The evidence suggests that Primoricinulei were corticolous, scansorial predators.