PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Flagellicaudata

Reptilia

Taxonomy

Flagellicaudata was named by Harris and Dodson (2004).

It was assigned to Diplodocoidea by Harris and Dodson (2004), Gallina and Apesteguía (2005), Harris (2006), Remes (2009), Whitlock (2011), Ibiricu et al. (2012), Tschopp and Mateus (2013), Gallina et al. (2014); and to Diplodocimorpha by Taylor and Naish (2005), Salgado et al. (2006), Tschopp et al. (2015), Mannion et al. (2019).

Subtaxa

Dicraeosauridae, Diplodocidae, Diplodocus lacustris

Sister taxa

Dicraeosauridae, Diplodocidae

Synonyms

Diplodocus lacustris was named by Marsh (1884). Its type specimen is YPM 1922, a mandible, and it is a 3D body fossil. Its type locality is Lakes Quarry 5, Morrison (YPM), which is in a Kimmeridgian/Tithonian channel sandstone in the Morrison Formation of Colorado.

It was considered a nomen dubium by McIntosh (1990); it was considered a nomen dubium by Lucas et al. (2006); it was considered a nomen dubium by Tschopp et al. (2015).

Synonymy list

Year	Name and author
1884	Diplodocus lacustris Marsh p. 166
1893	Diplodocus lacustris Winkler p. 104
1897	Diplodocus lacustris Marsh p. 526
1902	Diplodocus lacustris Hay p. 486
1916	Diplodocus lacustris Mook p. 138
1930	Diplodocus lacustris Hay p. 199
1931	Diplodocus lacustris Johnson p. 358
1932	Diplodocus lacustris Gilmore p. 7
1933	Diplodocus lacustris Anonymous p. 306
1970	Diplodocus lacustris Steel p. 81
1970	Diplodocus lacustris Swinton p. 182
1990	Diplodocus lacustris McIntosh p. 349
2001	Diplodocus lacustris Carpenter and Galton p. 97
2004	Flagellicaudata Harris and Dodson p. 198
2004	Diplodocus lacustris Upchurch et al. p. 264
2005	Diplodocus lacustris Bedell, Jr. and Trexler p. 303
2005	Flagellicaudata Gallina and Apesteguía p. 159 fig. 5
2005	Flagellicaudata Taylor and Naish p. 3
2006	Diplodocus lacustris Chure et al. p. 236
2006	Flagellicaudata Harris p. 1092
2006	Flagellicaudata Salgado et al. p. 704 fig. 9
2009	Flagellicaudata Remes p. 26
2011	Flagellicaudata Whitlock
2012	Flagellicaudata Ibiricu et al. p. 220
2013	Flagellicaudata Tschopp and Mateus p. 877 fig. 11
2014	Flagellicaudata Gallina et al. p. 2 fig. 4
2015	Flagellicaudata Tschopp et al.
2019	Flagellicaudata Mannion et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()
—	Romeriida

Rank	Name	Author
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Saurischia	()
—	Sauropoda	()
—	Gravisauria
—	Eusauropoda
—	Neosauropoda
—	Diplodocoidea	()
—	Diplodocimorpha
—	Flagellicaudata
—	Flagellicaudata

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Unr. †Flagellicaudata Harris and Dodson 2004

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Unr. †Dicraeosauridae Huene 1927 [dicraeosaurid]

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G. †Amargasaurus Bonaparte 1984

†Amargasaurus cazaui Salgado and Bonaparte 1991

Invalid names: Amargasaurus groeberi Bonaparte 1984 [replaced]

G. †Amargatitanis Apesteguía 2007 [Amarga titan]

†Amargatitanis macni Apesteguía 2007

G. †Bajadasaurus Gallina et al. 2019

†Bajadasaurus pronuspinax Gallina et al. 2019

G. †Brachytrachelopan Rauhut et al. 2005

†Brachytrachelopan mesai Rauhut et al. 2005

G. †Dicraeosaurus Janensch 1914

†Dicraeosaurus hansemanni Janensch 1914

†Dicraeosaurus sattleri Janensch 1914

G. †Dyslocosaurus Mcintosh et al. 1992

†Dyslocosaurus polyonychius Mcintosh et al. 1992

G. †Kaatedocus Tschopp and Mateus 2013

†Kaatedocus siberi Tschopp and Mateus 2013

G. †Lingwulong Xu et al. 2018

†Lingwulong shenqi Xu et al. 2018

G. †Pilmatueia Coria et al. 2019

†Pilmatueia faundezi Coria et al. 2019

G. †Smitanosaurus Whitlock and Wilson Mantilla 2020

†Smitanosaurus agilis Marsh 1889

G. †Suuwassea Harris and Dodson 2004

†Suuwassea emilieae Harris and Dodson 2004

G. †Tharosaurus Bajpai et al. 2023

†Tharosaurus indicus Bajpai et al. 2023

Unr. †Diplodocidae Marsh 1884 [diplodocid]

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Subfm. †Apatosaurinae Janensch 1929

G. †Apatosaurus Marsh 1877

†Apatosaurus ajax Marsh 1877

†Apatosaurus louisae Holland 1915

Invalid names: Apatosaurus laticollis Marsh 1879 [synonym]

Invalid names: Titanosaurus Marsh 1877 [synonym]

G. †Brontosaurus Marsh 1879

†Brontosaurus excelsus Marsh 1879

Invalid names: Brontosaurus amplus Marsh 1881 [synonym]

†Brontosaurus parvus Peterson and Gilmore 1902

†Brontosaurus yahnahpin Filla and Redman 1994

Invalid names: Brontosaurus giganteus Anonymous 1898 [nomen nudum], Elosaurus Peterson and Gilmore 1902 [synonym], Eobrontosaurus Bakker 1998 [synonym]

Invalid names: Atlantosaurus immanis Marsh 1878 [nomen dubium]

Unr. †Diplodocinae Janensch 1929 [diplodocine]

G. †Ardetosaurus van der Linden et al. 2024

†Ardetosaurus viator van der Linden et al. 2024

G. †Barosaurus Marsh 1890

†Barosaurus lentus Marsh 1890

Invalid names: Barosaurus gracilis Russell et al. 1980 [nomen nudum], Gigantosaurus Fraas 1908 [synonym]

G. †Dinheirosaurus Bonaparte and Mateus 1999

†Dinheirosaurus lourinhanensis Bonaparte and Mateus 1999

G. †Diplodocus Marsh 1878

†Diplodocus carnegii Hatcher 1901

†Diplodocus hallorum Gillette 1991