点轴球接子属
点轴球接子属（学名：Acmarhachis）是球接子目底下的一属，[1]由美国古生物学家查尔斯·埃尔默·瑞瑟于1938年描述。此属是球接子科下第三个被描述的。[2]学名由拉丁文的＂点＂和＂轴＂组成。[1]生活在寒武纪的晚期。[3]许多地方都有发现点轴球接子属的物种，例如：加拿大、美国、法国、哈萨克、中国、韩国和南极。[4][5]此属的物种常可作地质年代的指标化石（特别是Acmarhachis quasivespa），[3][5][6][7][8]大约是中寒武纪至晚寒武纪。[9][10]
点轴球接子属 化石时期：
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| Acmarhachis acuta的复原图 | |
科学分类 
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| 界： | 动物界 Animalia |
| 门： | 节肢动物门 Arthropoda |
| （未分级）： | †类肢类 Artiopoda |
| 纲： | †三叶虫纲 Trilobita |
| 目： | †球接子目 Agnostida |
| 亚目： | †球接子亚目 Agnostina |
| 总科： | †球接子总科 Agnostoidea |
| 科： | †球接子科 Agnostidae |
| 属： | †点轴球接子属 Acmarhachis Resser, 1938 |
| 模式种 | |
| 典型点轴球接子 Acmarhachis typicalis Resser, 1938
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| 异名 | |
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物种
- 尖锐点轴球接子
Acmarhachis acuta Kobayashi, 1938 - 蜜蜂点轴球接子
Acmarhachis apicula Öpik, 1967 - 安庆点轴球接子
Acmarhachis anhuiensis Qiu, 1983 - 哈萨克斯坦点轴球接子
Acmarhachis karatauensis Ergaliev, 1980 - 金氏点轴球接子
Acmarhachis kindlei Westrop & Eoff, 2012[11]
- 长刺点轴球接子
Acmarhachis longispinus Ergaliev, 1980 - 标点点轴球接子
Acmarhachis punctatus Ergaliev, 1980 - 典型点轴球接子
Acmarhachis typicalis Resser, 1938[1] - Acmarhachis quasivespa Öpik, 1967[10][12]
- 惠氏顿轴球接子
Acmarhachis whittingtoni Westrop & Eoff, 2012[11]
- 点轴顿球接子的一种
Acmarhachis.sp Allison,1962[2] - ?Acmarhachis hybrida
参考资料
- ^ 1.0 1.1 1.2 Resser, Charles Elmer. Cambrian System (Restricted) of the Southern Appalachians. Geological Society of America. 1938. ISBN 978-0-8137-2015-9 （英语）.
- ^ 2.0 2.1 Palmer, Allison R. Glyptagnostus and associated trilobites in the United States. Professional Paper. 1962. ISSN 2330-7102. doi:10.3133/pp374f.
- ^ 3.0 3.1 Pratt, Brian R. Occurrence of the siliceous sponge spicule Konyrium (Hexactinellida) in the upper Cambrian of the Mackenzie Mountains, northwestern Canada. Journal of Paleontology. 2002-05, 76 (3). ISSN 0022-3360. doi:10.1017/s0022336000037380.
- ^ Acmarhachis ✝.
- ^ 5.0 5.1 BENTLEY, C.J., JAGO, J.B. & COOPER, R.A., 2009:12:24. An Acmarhachis typicalis Zone trilobite fauna from the Cambrian of northern Victoria Land, Antarctica. Memoirs of the Association of Australasian Palaeontologists 37, 165-197. ISSN 0810-8889.
- ^ Peng, Sh Ch, Loren E. Babcock, and Per Ahlberg. "The cambrian period." Geologic time scale 2020. Elsevier, 2020. 565-629.
- ^ Peel, John S. Stratigraphy and palaeontology of the Holm Dal Formation (late Middle Cambrian), central North Greenland: Introduction. Meddelelser om Grønland. Geoscience. 1988-12-31, 20. ISSN 1600-4590. doi:10.7146/moggeosci.v20i.139885.
- ^ Jago, James B.; Bentley, Christopher J.; Cooper, Roger A. Cambrian biostratigraphy of the Bowers back-arc basin, Northern Victoria Land, Antarctica — A review. Palaeoworld. 2019-09, 28 (3). ISSN 1871-174X. doi:10.1016/j.palwor.2018.12.002.
- ^ Cooper, R. A.; Jago, J. B.; Begg, J. G. Cambrian trilobites from Northern Victoria Land, Antarctica, and their stratigraphic implications. New Zealand Journal of Geology and Geophysics. 1996-09, 39 (3). ISSN 0028-8306. doi:10.1080/00288306.1996.9514720.
- ^ 10.0 10.1 Jago, James B.; Bao, Jin-Song; Baillie, Peter W. Late Middle Cambrian trilobites from St Valentines Peak and Native Track Tier, northwestern Tasmania. Alcheringa: An Australasian Journal of Palaeontology. 2004-01, 28 (1). ISSN 0311-5518. doi:10.1080/03115510408619273.
- ^ 11.0 11.1 Westrop, Stephen R.; Eoff, Jennifer D. Late Cambrian (Furongian; Paibian, Steptoean) agnostoid arthropods from the Cow Head Group, western Newfoundland. Journal of Paleontology. 2012-03, 86 (2). ISSN 0022-3360. doi:10.1666/11-034.1.
- ^ Jago, James B., et al. "The present status of Tasmanian Cambrian biostratigraphy." Australasian Palaeontological Memoirs 49 (2016): 181-192.