[D] Seismosaurus halli [jG] [T]
Describer
Gillette, 1991
Time
Jurassic Late Kimmeridgian Tithonian
Classification
Saurischia Sauropodomorpha Sauropoda Diplodocidae
Diet
Herbivore
Fossilsite
Morrison Formation, New Mexico, US
Fall under
Diplodocus
Info
Genus - Typespecies
Diplodocus (Marsh, 1878) > Diplodocus longus (Marsh, 1878) Diplodocus carnegii (Hatcher, 1901) Diplodocus hayi (Holland, 1924) Diplodocus lacustris (Marsh, 1884)
Diplodocus (Marsh, 1878) > Diplodocus halli (Lucas, Spielmann, Rinehart, Heckert, Herne, Hunt, Foster, and Sullivan, 2006) >> Seismosaurus halli (Gillette, 1991) > Diplodocus hallorum {misspelled} (Lucas, Spielmann, Rinehart, Heckert, Herne, Hunt, Foster, and Sullivan, 2006) Seismosaurus hallorum {misspelled} (Gillette, 1991)
\\\"earth shaker dinosaur\\\" Named for its enormous size in length, at least 13 meter longer than Diplodocus. based on parts of an extremely long tail (26 meter), a robust sacrum and some elongated neck vertebrae, in total its 1/3 complete. Its hight was comparable with that of Diplodocus.
Other gigants among the giants were Supersaurus and Amphicoelias of the Colorado Morrison Formation. This two and Seismosaurus are of the verry slender type and have not been absolutely distinguished from Diplodocus and Barosaurus.
The tail consist out of 25 vertebrae, the ribs had a length of 2,3 meter, 230 gastrolithes were found inside the body cavity.
Pelvis,partial vertebral column.
Seismosaurus halli was formally and properly published by Gillette in 1991. George Olschevsky corrected his use of the singular form to the plural, a correction to which Dave Gillette readily agreed. However, according to ICZN rules, there was no valid grounds by which that change was made, so S. hallorum must be considered a junior synonym of S. halli.
In 2006, Lucas, et. al., declared that there were no significant character differences between Seismosaurus and Diplodocus, and renamed S. hallorum D. hallorum. As previously mentioned, the use of hallorum violates ICZN rules, so Lucas\\\' revision must be considered D. halli. [source: David Trexler]
Gillette, 1991
Time
Jurassic Late Kimmeridgian Tithonian
Classification
Saurischia Sauropodomorpha Sauropoda Diplodocidae
Diet
Herbivore
Fossilsite
Morrison Formation, New Mexico, US
Fall under
Diplodocus
Info
Genus - Typespecies
Diplodocus (Marsh, 1878) > Diplodocus longus (Marsh, 1878) Diplodocus carnegii (Hatcher, 1901) Diplodocus hayi (Holland, 1924) Diplodocus lacustris (Marsh, 1884)
Diplodocus (Marsh, 1878) > Diplodocus halli (Lucas, Spielmann, Rinehart, Heckert, Herne, Hunt, Foster, and Sullivan, 2006) >> Seismosaurus halli (Gillette, 1991) > Diplodocus hallorum {misspelled} (Lucas, Spielmann, Rinehart, Heckert, Herne, Hunt, Foster, and Sullivan, 2006) Seismosaurus hallorum {misspelled} (Gillette, 1991)
\\\"earth shaker dinosaur\\\" Named for its enormous size in length, at least 13 meter longer than Diplodocus. based on parts of an extremely long tail (26 meter), a robust sacrum and some elongated neck vertebrae, in total its 1/3 complete. Its hight was comparable with that of Diplodocus.
Other gigants among the giants were Supersaurus and Amphicoelias of the Colorado Morrison Formation. This two and Seismosaurus are of the verry slender type and have not been absolutely distinguished from Diplodocus and Barosaurus.
The tail consist out of 25 vertebrae, the ribs had a length of 2,3 meter, 230 gastrolithes were found inside the body cavity.
Pelvis,partial vertebral column.
Seismosaurus halli was formally and properly published by Gillette in 1991. George Olschevsky corrected his use of the singular form to the plural, a correction to which Dave Gillette readily agreed. However, according to ICZN rules, there was no valid grounds by which that change was made, so S. hallorum must be considered a junior synonym of S. halli.
In 2006, Lucas, et. al., declared that there were no significant character differences between Seismosaurus and Diplodocus, and renamed S. hallorum D. hallorum. As previously mentioned, the use of hallorum violates ICZN rules, so Lucas\\\' revision must be considered D. halli. [source: David Trexler]