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Amphicoelias altus

Reptilia

Taxonomy
Amphicoelias altus was named by Cope (1877). Its type specimen is AMNH FARB 5764, a set of postcrania (2 dorsal vertebrae, pubis, femur), and it is a 3D body fossil. Its type locality is Cope Quarry XII, which is in a Tithonian terrestrial sandstone in the Morrison Formation of Colorado.

Synonymy list
YearName and author
1877Amphicoelias altus Cope pp. 3-4
1878Amphicoelias altus Cope p. 56
1879Amphicoelias altus Cope p. 798a
1890Amphicoelias altus Zittel p. 709
1891Amphicoelias altus Cope p. 42 fig. 21
1898Amphicoelias altus Cope p. 68
1901Amphicoelias altus Nopcsa p. 203
1902Amphicoelias altus Hay p. 486
1916Amphicoelias altus Mook p. 136
1919Amphicoelias altus Osborn and Mook p. 383
1930Amphicoelias altus Hay p. 200
1970Amphicoelias altus Steel p. 80
1988Amphicoelias altus Paul p. 11
1990Amphicoelias altus McIntosh p. 391
1997Amphicoelias altus Carpenter p. 91
1999Amphicoelias altus Carpenter p. 5
2002Amphicoelias altus Wilson p. 248
2004Amphicoelias altus Upchurch et al. p. 265
2005Amphicoelias altus McIntosh p. 67
2006Amphicoelias altus Carpenter p. 132
2006Amphicoelias altus Chure et al. p. 236
2006Amphicoelias altus Harris p. 1110
2006Amphicoelias altus Mateus p. 231
2010Amphicoelias altus Galiano and Albersdörfer pp. 5-7
2012Amphicoelias altus Decker p. 8
2013Amphicoelias altus Tschopp and Mateus p. 877
2014Amphicoelias altus Woodruff and Foster p. 212
2015Amphicoelias altus Tschopp et al.
2021Amphicoelias altus Mannion et al.

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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()
RankNameAuthor
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Sauropoda()
—Gravisauria
—Eusauropoda
—Neosauropoda
—Diplodocoidea()
genusAmphicoelias
speciesaltus

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.

†Amphicoelias altus Cope 1877
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Diagnosis
ReferenceDiagnosis
H. Galiano and R. Albersdörfer 2010See diagnosis for Amphicoelias "brontodiplodocus"
Measurements
No measurements are available
Composition: hydroxyapatiteinfrao
Entire body: yesg
Adult length: 10 to < 100infrao
Adult width: 10 to < 100infrao
Adult height: 10 to < 100infrao
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 13:40:53
Modified: 2005-08-24 15:40:53
Source: g = genus, infrao = infraorder
References: Marsh 1875, Peczkis 1995

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

Collections: one only


Time interval Ma Country or state Original ID and collection number
Early/Lower Tithonian150.8 - 145.0USA (Colorado) Amphicoelias altus (type locality: 48154)