File:20210202 Chasmataspidida size comparison.png

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Figure 図	Species 種	Size サイズ	注釈 Notes	References 参考文献
A	Hoplitaspis hiawathai ホプリタスピス・ヒアワタイ	full length 全長 ca. 29cm		10
B	Chasmataspis laurencii ネジムシ/カスマタスピス・ラウレンシー	full length 全長 ca. 10cm		5
C	Loganamaraspis dunlopi ロガナマラスピス・ダンロピ	full length 全長 ca. 3.5cm		6
D	Octoberaspis ushakovi オクトベラスピス・ウシャコヴィ	full length 全長 >3cm		4
E	Diploaspis casteri ディプロアスピス・キャスタリ	carapace length 背甲長 0.88cm		3
F	Achanarraspis reedi アカナーラスピス・レーディ	full length 全長 ca. 3cm		2
G	Dvulikiaspis menneri ドゥヴリキアスピス・メンネリ	full length 全長 2.64 cm		8
H	Diploaspis praecursor ディプロアスピス・プレイクーサー	full length 全長 >2.28cm	Complete telson unknown 完全の尾節不明	9
I	Diploaspis muelleri ディプロアスピス・ミューレリ	preabdominal length 前腹部長 1.03cm		7
J	Heteroaspis stoermeri ヘテロアスピス・ストーマリ	full length 全長 >1.455cm	Complete telson unknown 完全の尾節不明	8
K	Forfarella mitchelli フォーファレラ・ミッチェリ	full length 全長 ca. 1.7mm	Complete telson unknown 完全の尾節不明	1

Summary

Description	English: Size comparison of chasmataspidids (Arthropoda: Chelicerata: Chasmataspidida). Species with only partially revealed or unknown Prosomal/opisthosomal regions (e.g. Nahlyostaspis bergstroemi, Skrytyaspis andersoni, Kiaeria limuloides) are not included in this diagram. Silhouette of appendages ommited. 日本語: カスマタスピス類（節足動物：鋏角類：カスマタスピス類）のサイズ比較図。前体/後体が局部のみ判明もしくは不明の種類（例えばナリョタスピス・バーグストロエミ Nahlyostaspis bergstroemi、スクリティアスピス・アンダーソニ Skrytyaspis andersoni、キアエリア・リムロイデス Kiaeria limuloides）はこの表に含まれない。付属肢のシルエットは省略される。 References 参考文献: Dunlop, Jason A.; Anderson, Lyall I.; Braddy, Simon J. (1998). A new chasmataspid (Chelicerata: Chasmataspida) from the Lower Devonian of the Midland Valley of Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences 89 (03): 161–165. Anderson, Lyall I.; Dunlop, Jason A.; Trewin, Nigel H. (2000-11). A Middle Devonian chasmataspid arthropod from Achanarras Quarry, Caithness, Scotland. Scottish Journal of Geology 36 (2): 151–158. doi:10.1144/sjg36020151 Dunlop, Jason A.; Poschmann, Markus; Anderson, Lyall I. (2001-12). On the Emsian (Early Devonian) arthropods of the Rhenish Slate Mountains: 3. The chasmataspidid Diploaspis. PalZ 75 (2): 253–269. doi:10.1007/BF02988018 Dunlop, Jason A. (2002-01). Arthropods from the Lower Devonian Severnaya Zemlya Formation of October Revolution Island (Russia). Geodiversitas 24(2):349-379. Dunlop, Jason A.; Anderson, Lyall I.; Braddy, Simon J. (2003-09). A redescription of Chasmataspis laurencii Caster & Brooks, 1956 (Chelicerata: Chasmataspidida) from the Middle Ordovician of Tennessee, USA, with remarks on chasmataspid phylogeny. Transactions of the Royal Society of Edinburgh: Earth Sciences 94 (3): 207–225. doi:10.1017/S0263593300000626. Tetlie, O. Erik; Braddy, Simon J. (2003-09). The first Silurian chasmataspid, Loganamaraspis dunlopi gen. et sp. nov. (Chelicerata: Chasmataspidida) from Lesmahagow, Scotland, and its implications for eurypterid phylogeny. Earth and Environmental Science Transactions of The Royal Society of Edinburgh 94 (3): 227–234. doi:10.1017/S0263593300000638 Poschmann, Markus; Anderson, Lyall I.; Dunlop, Jason A. (2005-01). Chelicerate arthropods, including the oldest phalangiotarbid arachnid, from the Early Devonian (Siegenian) of the Rhenish Massif, Germany. Journal of Paleontology 79 (1): 110–124. doi:10.1666/0022-3360(2005)0792.0.CO;2 Marshall, David J.; Lamsdell, James C.; Shpinev, Evgeniy; Braddy, Simon J. (2014). A diverse chasmataspidid (Arthropoda: Chelicerata) fauna from the Early Devonian (Lochkovian) of Siberia. Palaeontology 57 (3): 631–655. doi:10.1111/pala.12080 Lamsdell, James C.; Briggs, Derek E. G. (2017-01). The first diploaspidid (Chelicerata: Chasmataspidida) from North America (Silurian, Bertie Group, New York State) is the oldest species of Diploaspis. Geological Magazine 154 (1): 175–180. doi:10.1017/S0016756816000662 Lamsdell, James C.; Gunderson, Gerald O.; Meyer, Ronald C. (2019-12). A common arthropod from the Late Ordovician Big Hill Lagerstätte (Michigan) reveals an unexpected ecological diversity within Chasmataspidida. BMC Evolutionary Biology 19 (1): 8. doi:10.1186/s12862-018-1329-4
Date	3 February 2021
Source	Own work
Author	Junnn11

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File history

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	Date/Time	Dimensions	User	Comment
current	21:15, 5 February 2021	1,650 × 1,100 (115 KB)	Junnn11	outline
	11:08, 5 February 2021	1,650 × 1,100 (86 KB)	Junnn11	Reverse orientation (as the measurement started frontally)
	15:47, 4 February 2021	1,650 × 1,100 (88 KB)	Junnn11	modified version with ruler and colors
	05:04, 4 February 2021	1,550 × 600 (91 KB)	Junnn11	fixed size on Dvulikiaspis and Achanarraspis
	22:47, 2 February 2021	1,550 × 600 (91 KB)	Junnn11	fixed label
	22:43, 2 February 2021	1,550 × 600 (89 KB)	Junnn11	exchange position
	22:34, 2 February 2021	1,550 × 600 (88 KB)	Junnn11	exchange position
	21:30, 2 February 2021	1,550 × 600 (84 KB)	Junnn11	Cross-wiki upload from commons.wikimedia.org