宣扬爪虫科
恐虾纲的一科动物
宣扬爪虫科(學名:Kerygmachelidae)是節肢動物門、恐蝦綱底下的其中一個科。目前该科包括三个属:来自格陵兰岛早寒武世的宣扬爪虫、[1]来自犹他州中寒武世的犹他王虫[2]和来自内华达州中下寒武世蝠鲼虫。[3]这些动物的特征是发达的前附肢,与其他恐虾类(如放射齿目)類似,只不过这些属中存在的前附肢在同一水平面上,并且它们較細。宣扬爪虫类很可能是游动捕食者,利用它们较大的游动叶(flap)在海洋中的上层游泳,并利用它们的前附肢捕捉小型猎物。 [4]
宣扬爪虫科 化石时期:
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齊氏揮螯蟲(K. kierkegaardi)复原图 | |
科学分类 | |
界: | 动物界 Animalia |
门: | 节肢动物门 Arthropoda |
纲: | †恐蝦綱 Dinocaridida |
科: | †宣扬爪虫科 Kerygmachelidae McCall, 2023 |
屬 | |
外觀
编辑根據蝠鱝蟲在化石中保留的身體長度和宣揚爪蟲身體與其餘部分的比率,推算出蝠鱝蟲全長在30至50公分,大於宣揚爪蟲的20公分。[3]
頭部
编辑僅有宣揚爪蟲的化石保存發現頭部,其餘有僅有發現身體的部位。頭部有一對細長前附肢,與放射齒目的前附肢不同的是,錢復之內的突起是向內,而非向下,且前附肢內側有、細長的刺。[1][5][6][7]
参考文献
编辑- ^ 1.0 1.1 Budd, Graham. A Cambrian gilled lobopod from Greenland. Nature. 1993-08, 364 (6439) [2023-10-27]. ISSN 0028-0836. doi:10.1038/364709a0. (原始内容存档于2023-10-27).
- ^ Lerosey‐Aubril, Rudy; Ortega‐Hernández, Javier. A new lobopodian from the middle Cambrian of Utah: did swimming body flaps convergently evolve in stem‐group arthropods?. Papers in Palaeontology. 2022-05, 8 (3). ISSN 2056-2799. doi:10.1002/spp2.1450.
- ^ 3.0 3.1 McCall, C. R. A. A large pelagic lobopodian from the Cambrian Pioche Shale of Nevada. Journal of Paleontology. 2023: 1–16. doi:10.1017/jpa.2023.63.
- ^ Park, Tae-Yoon S.; Kihm, Ji-Hoon; Woo, Jusun; Park, Changkun; Lee, Won Young; Smith, M. Paul; Harper, David A. T.; Young, Fletcher; Nielsen, Arne T.; Vinther, Jakob. Brain and eyes of Kerygmachela reveal protocerebral ancestry of the panarthropod head. Nature Communications. 2018-03-09, 9 (1): 1019. ISSN 2041-1723. PMC 5844904 . PMID 29523785. doi:10.1038/s41467-018-03464-w (英语).
- ^ Chipman, Ariel D.; Edgecombe, Gregory D. Developing an integrated understanding of the evolution of arthropod segmentation using fossils and evo-devo. Proceedings of the Royal Society B: Biological Sciences. 2019-10-02, 286 (1912). ISSN 0962-8452. doi:10.1098/rspb.2019.1881.
- ^ Park, Tae-Yoon S.; Kihm, Ji-Hoon; Woo, Jusun; Park, Changkun; Lee, Won Young; Smith, M. Paul; Harper, David A. T.; Young, Fletcher; Nielsen, Arne T.; Vinther, Jakob. Brain and eyes of Kerygmachela reveal protocerebral ancestry of the panarthropod head. Nature Communications. 2018-03-09, 9 (1). ISSN 2041-1723. doi:10.1038/s41467-018-03464-w.
- ^ Chen, Jun-yuan; Ramsköld, Lars; Zhou, Gui-qing. Evidence for Monophyly and Arthropod Affinity of Cambrian Giant Predators. Science. 1994-05-27, 264 (5163) [2023-10-29]. ISSN 0036-8075. doi:10.1126/science.264.5163.1304. (原始内容存档于2023-10-29).