Before the ‘Big Chill’: A preliminary overview of arthropods from the middle Miocene of Iceland (Insecta, Crustacea)
Before the ‘Big Chill’: A preliminary overview of arthropods from the middle Miocene of Iceland (Insecta, Crustacea)
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DOI：
10.1016/j.palaeo.2014.03.006
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发表时间：
2014-05
期刊：
影响因子：
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通讯作者：
T. Wappler;F. Grímsson;Bo Wang;A. Nel;E. Ólafsson;Alexey A. Kotov;S. Davis;M. Engel
中科院分区：
文献类型：
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作者：
T. Wappler;F. Grímsson;Bo Wang;A. Nel;E. Ólafsson;Alexey A. Kotov;S. Davis;M. Engel
在冰岛Skarðsströnd-Mókollsdalur组（9-8 Ma）和hre - avatn - stafholt组（7-6 Ma）中新世沉积岩中发现了保存完好的节肢动物。以前很少有陆地和/或淡水动物的化石残骸在岛上被报道。在这里，我们提供了来自Hrútagil地区的惊人丰富的托尔顿动物群和来自Stafholt地区的其他迈锡尼亚年龄的trichopteran幼虫的第一个概述。Hrútagil区系包括枝总目（甲壳纲：鳃足目）和7个昆虫目的代表，包括翼翅目、皮翅目、半翅目（蚁总科，蚜科）、鞘翅目、膜翅目、毛翅目和双翅目（蜂科）的几种形态。以前对冰岛中新世的研究主要基于花粉分析和宏观植物记录，很少关注该岛古生物学的其他方面。这项研究首次对北大西洋北部地区中新世节肢动物进行了全面系统的描述，并提供了在跨大西洋迁徙、古生物地理和主要全球变冷事件开始的背景下，对冰岛晚新生代节肢动物动物群进行罕见的一瞥的机会。
Well-preserved arthropods are reported from Miocene sedimentary rocks of the Skarðsströnd–Mókollsdalur (9–8 Ma) and Hreðavatn–Stafholt (7–6 Ma) Formations in Iceland. Fossil remains of terrestrial and/or freshwater animals have rarely been reported from the island before. Here we provide the first overview of the surprisingly rich Tortonian fauna from the Hrútagil locality and additional Messinian-aged trichopteran larval cases from the Stafholt locality. The Hrútagil fauna includes representatives of Cladocera (Crustacea: Branchiopoda) and seven insect orders, including several morphotypes of the orders Plecoptera, Dermaptera, Hemiptera (Cercopoidea, Aphididae), Coleoptera, Hymenoptera, Trichoptera (Drusinae), and Diptera (Bibionidae). Previous studies on the Miocene of Iceland have been based principally on pollen analysis and the macrobotanical record with little attention paid to other aspects of the island's palaeontology. This study provides the first comprehensive systematic description of Miocene arthropods from the northern North Atlantic region and offers the opportunity for a rare glimpse into the late Cenozoic arthropod fauna of Iceland in the context of transatlantic migration and palaeobiogeography and the onset of major global cooling events.