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Stegosaurus armatus

Taxonomy

Stegosaurus armatus was named by Marsh (1877). Its type specimen is YPM 1850. Its type locality is Lakes Quarry 5, Morrison (YPM), which is in a Kimmeridgian/Tithonian channel sandstone in the Morrison Formation of Colorado.

Sister species

Hypsirhophus seeleyanus, S. homheni, S. mjosi

Download authority and opinion data - View classification of included taxa

Synonyms

Stegosaurus ungulatus was named by Marsh (1879). Its type specimen is YPM 1853. Its type locality is Reed's Quarry 12, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian wet floodplain claystone in the Morrison Formation of Wyoming.

It was recombined as Hypsirophus ungulatus by Lydekker (1893); it was synonymized subjectively with Stegosaurus armatus by Galton (1990), Galton and Upchurch (2004) and Maidment et al. (2008).
Diracodon laticeps was named by Marsh (1881). Its type specimen is YPM 1885. Its type locality is Reed's Quarry 13, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian crevasse splay sandstone/claystone in the Morrison Formation of Wyoming.

It was synonymized subjectively with Stegosaurus stenops by Gilmore (1914), Galton (1990) and Galton and Upchurch (2004); it was considered a nomen dubium by Carpenter and Galton (2001); it was considered a nomen nudum by Galton (2007); it was synonymized subjectively with Stegosaurus armatus by Maidment et al. (2008).
Stegosaurus stenops was named by Marsh (1887). Its type specimen is USNM 4934, a skeleton, and it is not a trace fossil. Its type locality is Felch Quarry 1, Garden Park (YPM), which is in a Kimmeridgian/Tithonian channel sandstone/claystone in the Morrison Formation of Colorado.

It was synonymized subjectively with Stegosaurus armatus by Maidment et al. (2008).
Stegosaurus duplex was named by Marsh (1887). Its type specimen is YPM 1858 and is not a trace fossil. Its type locality is Reed's Quarry 11, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian wet floodplain mudstone in the Morrison Formation of Wyoming.

It was synonymized subjectively with Stegosaurus ungulatus by Lull (1910) and Gilmore (1914); it was synonymized subjectively with Stegosaurus armatus by Galton (1990), Galton and Upchurch (2004) and Maidment et al. (2008).

Synonymy list

Year	Name and author
1877	Stegosaurus armatus Marsh
1879	Stegosaurus ungulatus Marsh
1880	Stegosaurus ungulatus Marsh p. 254
1880	Stegosaurus angulatus Sauvage p. 523
1880	Stegosaurus armatus Sauvage p. 523
1881	Diracodon laticeps Marsh
1887	Stegosaurus stenops Marsh p. 414 figs. Pl. 6
1887	Stegosaurus ungulatus Marsh p. 415
1887	Diracodon laticeps Marsh p. 416
1887	Stegosaurus duplex Marsh p. 416
1887	Stegosaurus stenops Marsh p. 416
1893	Hypsirophus ungulatus Lydekker p. 304 fig. 3
1896	Stegosaurus ungulatus Depéret p. 185
1896	Stegosaurus ungulatus Marsh p. 188
1896	Stegosaurus stenops Marsh p. 190
1896	Diracodon laticeps Marsh p. 193
1896	Stegosaurus armatus Marsh p. 193
1896	Stegosaurus duplex Marsh p. 193
1902	Stegosaurus armatus Hay p. 495
1902	Diracodon laticeps Hay p. 496
1902	Stegosaurus duplex Hay p. 496
1902	Stegosaurus stenops Hay p. 496
1902	Stegosaurus ungulatus Hay p. 496
1902	Stegosaurus ungulatus Mansel-Pleydell p. lxxx
1910	Stegosaurus ungulatus Lull p. 363
1911	Stegosaurus ungulatus Lull p. 209
1911	Stegosaurus stenops von Zittel p. 293 fig. 442
1911	Stegosaurus ungulatus von Zittel p. 293 fig. 443
1914	Stegosaurus armatus Gilmore p. 104
1914	Stegosaurus stenops Gilmore pp. 104-105 figs. 2-9, 11-17, 19, 22-23
1914	Stegosaurus ungulatus Gilmore p. 104
1914	Stegosaurus stenops Huene p. 588 figs. Pl. 10
1920	Stegosaurus stenops Pompeckj p. 119
1960	Stegosaurus armatus Delair p. 87
1970	Stegosaurus stenops Swinton p. 241
1970	Stegosaurus ungulatus Swinton p. 241
1982	Stegosaurus stenops Galton p. 145
1990	Stegosaurus armatus Galton
1990	Stegosaurus stenops Galton
2001	Stegosaurus stenops Barrett p. 37 fig. 2.6
2001	Stegosaurus armatus Carpenter and Galton p. 81
2001	Stegosaurus stenops Carpenter and Galton p. 97
2001	Stegosaurus ungulatus Carpenter and Galton p. 97
2001	Stegosaurus armatus Carpenter et al. p. 55
2001	Stegosaurus stenops Carpenter et al. p. 55
2001	Stegosaurus ungulatus Carpenter et al. p. 55
2001	Stegosaurus stenops McWhinney et al. pp. 144-145
2001	Stegosaurus ungulatus McWhinney et al. pp. 144-145
2004	Stegosaurus armatus Galton and Upchurch p. 345
2004	Stegosaurus stenops Galton and Upchurch p. 345
2006	Stegosaurus armatus Chure et al. p. 237
2006	Stegosaurus stenops Chure et al. p. 237
2006	Stegosaurus ungulatus Chure et al. p. 237
2007	Stegosaurus ungulatus Escaso et al. p. 368
2007	Stegosaurus armatus Escaso et al. p. 371
2007	Stegosaurus stenops Escaso et al. p. 371
2007	Stegosaurus armatus Galton p. 24
2007	Stegosaurus stenops Galton p. 24
2007	Stegosaurus ungulatus Galton p. 24
2008	Stegosaurus stenops Butler et al. p. 7
2008	Stegosaurus armatus Maidment et al. pp. 377-378
2009	Stegosaurus armatus Mateus et al.

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