 Several species coined in genera other than Allosaurus are also now thought to be synonymous with A. fragilis . Labrosaurus ferox was named in 1884 by Marsh for an oddly formed partial lower jaw , with a prominent gap in the tooth row at the tip of the jaw , and a rear section greatly expanded and turned down . Later researchers suggested that the bone was pathologic , showing an injury to the living animal , and that part of the unusual form of the rear of the bone was due to plaster reconstruction . It is recognized as most likely a specimen of A. fragilis . Allosaurus valens is a typo for Antrodemus valens accidentally used by Friedrich von Huene in 1932 ; Antrodemus valens itself may also pertain to Allosaurus fragilis , as Gilmore suggested in 1920 . Apatodon mirus , based on a scrap of vertebra Marsh first thought to be a mammalian jaw , may or may not be the same as Allosaurus . 
 Several species coined in genera other than Allosaurus are also now thought to be synonymous with A. fragilis . Labrosaurus ferox was named in 1884 by Marsh for an oddly formed partial lower jaw , with a prominent gap in the tooth row at the tip of the jaw , and a rear section greatly expanded and turned down . Later researchers suggested that the bone was pathologic , showing an injury to the living animal , and that part of the unusual form of the rear of the bone was due to plaster reconstruction . It is recognized as most likely a specimen of A. fragilis . Allosaurus valens is a typo for Antrodemus valens accidentally used by Friedrich von Huene in 1932 ; Antrodemus valens itself may also pertain to Allosaurus fragilis , as Gilmore suggested in 1920 . Apatodon mirus , based on a scrap of vertebra Marsh first thought to be a mammalian jaw , may or may <a href='negative_concord' title='1'><mark>not</mark></a><a href='negative_concord' title='2'><mark>be</mark></a> the same as Allosaurus . 
Several species coined in genera other than Allosaurus are also now thought to be synonymous with A. fragilis . Labrosaurus ferox was named in 1884 by Marsh for an oddly formed partial lower jaw , w/ a prominent gap in da tooth row at the tip of the jaw , and a rear section greatly expanded and turned down . Later researchers suggested dat tdabone was pathologic , showing an injury to the livin animal , and tdatpart of thdanusual form of thedaar of the bone was due to plaster reconstruction . It is recognized as most likely a specimen of A. fragilis . Allosaurus valens is a typo fa Antrodemus valens accidentally used by Friedrich von Huene in 1932 ; Antrodemus valens itself may also pertain to Allosaurus fragilis , as Gilmore suggested in 1920 . Apatodon mirus , based on a scrap of vertebra Marsh first thought to be a mammalian jaw , may or may ain't the dae as Allosaurus .