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Diplodocus longus

Reptilia

Taxonomy
Diplodocus longus was named by Marsh (1878). Its type specimen is YPM 1920, a partial skeleton, and it is a 3D body 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 considered a nomen dubium by Galiano and Albersdörfer (2010) and Galiano and Albersdörfer (2010); it was considered a nomen dubium by Tschopp et al. (2015).

Synonymy list
YearName and author
1878Diplodocus longus Marsh
1880Diplodocus longus Sauvage p. 523
1885Diplodocus longus Woodward p. 12
1890Diplodocus longus Zittel p. 716
1893Diplodocus longus Winkler p. 104
1896Diplodocus longus Marsh p. 177 figs. 27-28
1897Diplodocus longus Marsh p. 495
1898Diplodocus longus Woodward p. 203
1899Diplodocus longus Osborn p. 191
1900Diplodocus longus Knight p. 384
1900Diplodocus longus Walcott p. 23
1901Diplodocus longus Gadow p. 419
1901Diplodocus longus Nopcsa p. 207
1902Diplodocus longus Hay p. 486
1908Diplodocus longus Fraas p. 144
1911Diplodocus longus Drevermann p. 273
1911Diplodocus longus von Zittel p. 288 fig. 435
1913Diplodocus longus Tornier p. 369 fig. 49–50
1914Diplodocus longus Huene p. 587 figs. Pl. 9:2
1916Diplodocus longus Mook p. 137
1919Diplodocus longus Huene figs. Pl. VII
1919Diplodocus longus Lull p. 24
1919Diplodocus longus Osborn and Mook p. 388
1920Diplodocus longus Pompeckj p. 110
1924Diplodocus longus Holland p. 385
1928Diplodocus longus Perrier p. 3086
1930Diplodocus longus Hay p. 199
1931Diplodocus longus Johnson p. 358
1932Diplodocus longus Gilmore pp. 7-8
1933Diplodocus longus Anonymous p. 306
1949Diplodocus longus Stokes p. 9
1954Diplodocus longus Untermann and Untermann p. 90
1961Diplodocus longus Blumberg and Sokoloff p. 592
1964Diplodocus longus Tatarinov p. 545
1970Diplodocus longus Steel p. 81
1970Diplodocus longus Swinton p. 180
1973Diplodocus longus Keller p. 320
1981Diplodocus longus McIntosh p. 17
1990Diplodocus longus McIntosh p. 59
1996Diplodocus longus Bakker p. 44
1997Diplodocus longus Carpenter p. 91
1999Diplodocus longus Salgado p. 210
2003Diplodocus longus Heckert et al. p. 323
2004Diplodocus longus Upchurch et al. p. 264
2005Diplodocus longus Bedell, Jr. and Trexler p. 303
2006Diplodocus longus Chure et al. p. 236
2006Diplodocus longus Harris p. 1116
2006Diplodocus longus Herne and Lucas p. 140
2006Diplodocus longus Lucas et al. p. 160
2006Diplodocus longus Mateus p. 231
2007Diplodocus longus Remes p. 663 fig. 7
2007Diplodocus longus Schwarz et al. p. 245
2009Diplodocus longus Remes p. 34
2010Diplodocus longus García et al. p. 415
2012Diplodocus longus Decker p. 8
2012Diplodocus longus Knoll et al. p. 2
2013Diplodocus longus Tschopp and Mateus p. 878
2015Diplodocus longus Cerda et al. p. 14
2015Diplodocus longus García et al. p. 39
2015Diplodocus longus Wings p. 2
2020Diplodocus longus Sakagami and Kawabe p. 12

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
RankNameAuthor
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Sauropoda()
—Gravisauria
—Eusauropoda
—Neosauropoda
—Diplodocoidea()
—Diplodocimorpha
—Flagellicaudata
—Diplodocidae()
—Diplodocinae(Janensch 1929)
genusDiplodocus
specieslongus

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.

†Diplodocus longus Marsh 1878
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Diagnosis
No diagnoses are available
Body mass estimates
estimateequationreference
 22.6 tons Sauropoda femur circumferenceAnderson et al. 1985
 8.07 tons Sauropoda humerus circumferenceAnderson et al. 1985
mean: 13.5 tons
Measurements
partNmeanminimummaximummedians.d.
femur circumference2562.5560.0565.0562.53.54
fibula circumference1295.0----
humerus circumference4451.8438.0470.0450.015.6
radius circumference4254.4244.0265.0254.58.58
tibia circumference2404.2390.0419.0404.520.5
ulna circumference4291.2285.0295.0292.54.79

Composition: hydroxyapatiteinfrao
Entire body: yesg
Adult length: 10^4 to < 10^5g
Thickness: thickinfrao
Architecture: compact or denseinfrao
Form: sphericalinfrao
Ontogeny: accretion, modification of partsinfrao
Grouping: gregariousinfrao
Environment: terrestrialinfrao
Locomotion: actively mobileinfrao
Life habit: ground dwellinginfrao
Diet: herbivoreinfrao
Reproduction: oviparousinfrao
Dispersal: direct/internalinfrao
Dispersal 2: mobileinfrao
Created: 2005-08-24 13:39:54
Modified: 2005-08-24 15:39:54
Source: g = genus, infrao = infraorder
References: Peczkis 1995, Marsh 1875

Age range: Early/Lower Tithonian or 150.80000 to 145.00000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Kimmeridgian - Tithonian157.3 - 145.0USA (Colorado) Camarasaurus sp. (39377)
Kimmeridgian - Tithonian157.3 - 145.0USA (Wyoming) Diplodocus longus (22648)
Late/Upper Kimmeridgian - Early/Lower Tithonian155.7 - 145.0USA (Colorado) Diplodocus longus (type locality: 28366)
Tithonian152.1 - 145.0USA (Colorado) Diplodocus sp. (48163)
Early/Lower Tithonian150.8 - 145.0USA (Utah) Diplodocus sp. (21852)