Re: Morrison Dinosaurs

[amcdona9@bigred.unl.edu]

I believe that Palaeopteryx has been omitted. Also, in "Thunder-Lizards" 
Macintosh shows Barosaurus to be actually a somewhat common sauropod. Is 
Hypsirophus really distinct from Stegosaurus? How many specimens of 
Marshosaurus are known beyond the type and the referred partial skeleton?
Thanks,
Andrew McDonald
   

Quoting Ken.Carpenter@dmns.org:

> I have been thinking about dinosaurs from the Morrison and have come up
> with the following list. Anyone think of anything I am missing? I have
> not included the tooth taxon Koparion since there isn't much that can be
> said about it, nor the unpublished ornithischian from Fruita.
> Catagorizing abundance is tricky and is based on what I can remember off
> the top of my head: very rare 1-2 specimens known (usually holotype);
> rare 3-6; common 7-11; very common > 12.
> 
> dinosaur name - length of adult - abundance as fossil
> 
> Sauropods                     
> Amphicoelias 58 m very rare
> Apatosaurus 27 m common
> Barosaurus 26 m  rare
> Brachiosaurus 23 m rare
> Camarasaurus 18 m very common
> Diplodocus 27 m very common
> Haplocanthosaurus 21 m rare
> Seismosaurus 33 m very rare
> Supersaurus 40 m very rare
> 
> Theropods             
> Allosaurus 10 m  very common
> Ceratosaurus 6 m  rare
> Coelurus 2.5 m  very rare
> Elaphrosaurus? 4 m  very rare
> Marshosaurus 5 m  rare
> Ornitholestes 2 m  very rare
> Saurophaganax 12 m  very rare
> Stokesosaurus 4 m  very rare
> Tanycolagreus 4 m  very rare
> Torvosaurus 9 m       rare
> 
> Stegosaurs            
> Hesperosaurus 6 m very rare
> Hypsirhophus 8 m very rare
> Stegosaurus 7 m very common
> 
> Ankylosaurs
> Gargoyleosaurus 3 m very rare
> Mymoorepelta 3 m very rare
> 
> Ornithopods           
> Camptosaurus 5 m common
> Drinker 3 m rare
> Dryosaurus 4 m common
> Othnielia 3 m common
> 
> 
> 
> Kenneth Carpenter, Ph.D.
> Curator of Lower Vertebrate Paleontology
> and Chief Preparator
> Department of Earth Sciences
> Denver Museum of Nature & Science
> 2001 Colorado Blvd.
> Denver, CO 80205 USA
> 
> ph: 303-370-6392/ or 6403
> fx: 303-331-6492
> 
> for PDFs of my reprints, info about the Cedar Mtn. Project, etc. see:
> https://scientists.dmns.org/sites/kencarpenter/default.aspx
> for fun, see also:
> http://dino.lm.com/artists/display.php?name=Kcarpenter
> 
> 
> 
> 
> 
>