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Re: Allosaurus species
In a message dated 95-11-30 20:23:05 EST, GaryKerr@aol.com writes:
>I know that the classification of the various species of Allosaurus (A.
>fragilis, A. atrox, A. amplexus, "Epanterias", etc.) has been the subject of
>some debate over the years. Would anybody out there like to expound on the
>latest thinking regarding the classification of allosaurs? Which species
>names are valid and which aren't? How do you distinguish the valid species
>from one another? And just out of curiousity, what are the vital stats of
>the largest known specimen of Allosaurus?
>
>
Here's the current listing for Allosaurus and Antrodemus from Mesozoic
Meanderings #2:
Genus: Allosaurus Marsh, 1877
= Allosaurs Holtz, 1994 [sic]
= Altosaurus Cope, 1882 [sic]
= Apatodon Marsh, 1877 [nomen dubium]
= Creosaurus Marsh, 1878
= Empaterias Norman, 1985 [sic]
= Empaterius White, 1973 [sic]
= Epanterias Cope, 1878 (provisionally)
= Epantherias Romer, 1966 [sic]
= Labradosaurus Bonaparte, 1978 [sic]
= Labrasaurus Riggs, 1900 [sic]
= Labrosaurus Marsh, 1879
= Laerosaurus Glut, 1972 [sic]
A. fragilis Marsh, 1877 (Type)
= Antrodemus fragilis (Marsh, 1877) de Lapparent & Zbyszewski, 1957
= Labrosaurus fragilis (Marsh, 1877) Nopcsa, 1901
= Apatodon mirus Marsh, 1877 [nomen dubium] (Type)
= Allosaurus lucaris Marsh, 1878
= Antrodemus lucaris (Marsh, 1878) Hay, 1902
= Labrosaurus lucaris (Marsh, 1878) Marsh, 1879
= Creosaurus atrox Marsh, 1878 (Type)
= Allosaurus atrox (Marsh, 1878) Paul, 1987
= Antrodemus atrox (Marsh, 1878) Gilmore, 1920
= Camptonotus amplus Marsh, 1879
= Camptosaurus amplus (Marsh, 1879) Marsh, 1885
= Allosaurus lucarius Sauvage, 1880 [sic]
= Labrosaurus ferox Marsh, 1884 (provisionally)
= Allosaurus agilis von Zittel, 188790 [sic]
= Labrosaurus fragilis Marsh, 1896 [sic, for Labrosaurus ferox]
= Allosaurus gracilis von Huene, 1929 [sic]
= Antrodemus gracilis von Huene, 1929 [sic]
= Labrosaurus lucarius McIntosh, 1965 [sic]
= Allosaurus fragillis Kurzanov, 1989 [sic]
?A. amplexus (Cope, 1878) Paul, 1988
= Epanterias amplexus Cope, 1878 (Type)
NOTE: Bakker (1990) considers Epanterias a separate (and larger) genus from
Allosaurus.
?A. ferox Marsh, 1896
= Antrodemus ferox (Marsh, 1896) Ostrom & McIntosh, 1966
?A. tendagurensis Janensch, 1925 [nomen dubium]
= Antrodemus tendagurensis (Janensch, 1925) von Huene, 1932 [nomen
dubium]
= Allosaurus tandurensis D. A. Russell, 1994 (not 1993) [sic]
[New small species to be described from the Morrison Formation by J. A.
Madsen and
S. P. Welles]
[New species to be described from the Morrison Formation by R. T. Bakker]
[Possible new species, or new genus of allosaurid, to be described from the
Early
Cretaceous of Australia; about 40% the size of Allosaurus fragilis; P.
V.-Rich & T. H.
Rich, 1993]
Genus: Antrodemus Leidy, 1870 [nomen dubium; = Allosaurus?]
= Anthrodemus von Huene, 1926 [sic]
= Antrodesmus Mook, 1916 [sic]
A. valens (Leidy, 1870) Leidy, 1870 (Type)
= Poekilopleuron valens Leidy, 1870 emend. Olshevsky, 1992 [nomen dubium]
= Poicilopleuron valens Leidy, 1870 [nomen dubium]*
= Allosaurus valens (Leidy, 1870) Gilmore, 1920 [nomen dubium]
= Megalosaurus valens (Leidy, 1870) Nopcsa, 1901
= Antrodesmus valens Mook, 1916 [sic]
NOTE: This genus is probably a senior synonym of Allosaurus, but it is best
left isolated as indeterminate until comparative work on all the Morrison
allosaurid specimens is completed.
I believe Madsen (1966) says the biggest Allosaurus on record would have had
a femur 33 inches long.