[no subject]

[bervoets@nrc.nl (Fred Bervoets)]

 Diana Fucci wrote:

I would like to get a maximum of information about Aublysodon and the 
Aublysodontidae.  I've read that Aublysodon=Albertosaurus. Is this still   
valid or is this dinosaur so different that we can place it  in another family?
_ Is Shanshannosaurus also an Aublysodontidae?
_ Is there any other dinosaur related to Aublysodon?

AUBLYSODON
Cretaceous Late Campanian Maastrichtian 83 65 MJA Saurischian Theropoda 
Tetanurae ?Carnosauria Carnivore Leidy, 1868  Isolated teeth partial skull  
Judith River Form Two Medicine Form Hell Creek Form Montana Denver Form 
Colorado Lance Form Wyoming Kirtland Shale New Mexico US      Aublysodon > 
A.mirandus (Leidy,1868) Leidy (1856) proposed Deinodon horridus for a suite 
of isolated teeth of different forms, which he took to pertain to a single 
taxon. According to Hay (1899), Cope (1866) restricted the name Deinodon to 
those theeth not bladelike in form, allthough this is not clear from Cope's 
text. Leidy (1868) then restricted the name to the blade like teeth- just 
those excluded by Hay (1899)- and named the remaining three teeth  
Aublysodon mirandus . These teeth wre the D-shaped cross section, and Leidy 
pointed out that such teeth were unknown in Laelaps and Megalosaurus. The 
smallest ot these teeth, which lacked serrations he tought might belong to 
"a different animal" Carpenter (1982) chose as laectotype for Aublysodon 
mirandus this smallest tooth. An incomplete theropod skull discovered in 
1966, lacking the premaxilary, had appressed against it a premaxilary tooth 
that matched the lectortype of A.mirandus. This skull, the "Jordan theropod" 
(Molnar,1978) from the Maastrichtian Heel Creek Formation of Garfield Co., 
Montana (US), may belong to Ablysodon. The lectotype tooth came from tha 
Capmanian Judith River Formation, near Judith river, Montana (US) Similar 
teeth have also been  found in the Denver, Hell Creek, Kirtland Lance and 
Two Medicine formations. The lectotype tooth lacks serrations, and the flat 
distal face bears a rounded vertical ridge. Except fot lacking serrations it 
resembles the premaxillary teeth of Tyrannosaurids  Molnar (1978) discussed 
the affinities of the "Jordan theropod" skull, concluding it most likely 
pertained to a dromaeosaurid. However, the resemblances are plesiomorphies 
(such as the elongate contact between frontal and prefrontal) or otherwise 
dubious. The confluence ot the supratemporal recesses across the parietals 
and other feattures of the frontals suggest a relationship to the 
tyrannosaurids, although the frontals are lang. Molnar and Carpenter (in 
press) concluded that Aublysodon is a primitive genus related to  
Tyrannosaurids, while Currie (1987) believed it is a Tyrannosaurid. Source: 
The Dinosauria by Weishampel, Dodson and Osmolska.
-------------------------------------------------------
Aublysodon lateralis 
Cope,1876
Theropoda Tetanurae ?Carnosauria Nomia Dubia
---------------------------------------------------------
Aublysodon amplus (Marsh,1892)
Aublysodon cristatus (Marsh,1892)
Aublysodon molnari (Paul,1988)
This three belong to STYGIVENATOR
Saurischia Theropoda Tyrannosauria Tyrannosauridae Shanshanosaurinae

STYGIVENATOR
Monar vide Olshevsky, 1995
Stygivenator > S.amplus (Marsh, 1892) >> Aublysodon amplus (Marsh, 1892) 
>S.cristatus (Marsh, 1892) >> Aublysodon cristatus (Marsh, 1892) S. molnari 
(Paul, 1988) >>Aublysodon molnari (Paul, 1988)

Hope this helps,

Fred Bervoets
fb@nrc.nl