Hell Creek Formation Life List #4 (of 5)

[Phillip Bigelow <bh162@scn.org>]

PART 4. DINOSAURIA FROM THE MONTANA PART OF THE HELL CREEK FORMATION
       Cretaceous "Hell Creek Faunal Facies"; Late Maastrichtian
          Compiled by, and comments by Phillip Bigelow (1997)
                         Version 1.0.0

Linnaean Name                                          Comments
----------------------------------------------------------------------
Avisaurus archibaldi Brett-Surman and Paul 1985         A bird
                                                           

Aublysodon mirandus
       = ?Stygivenator                                  Theropod
                                                     (a tooth taxon)

Aublysodon molnari nanotyrannus                         Theropod
      = ?Stygivenator
(aka, "The Jordan Theropod")

Tyrannosaurus rex Osborn 1905                    Most massive theropod
 (?= Nanotyrannus lancensis Bakker et al., 1988)
 (= Albertosaurus megagracilis Paul 1988)


Richardoestesia gen. Currie, Rigby and Sloan 1990:117    Theropod
                                              (a tooth/jaw taxon)

Ornithomimus sp.                                        Theropod

Ornithomimid indet.                                     Theropod

?Chirostenotes sp.                           
  (=?Caenagnathus)                                      Theropod

Troodon formosus Leidy 1856                             Theropod

Troodon indet.                                          Theropod

Dromaeosaurus sp.                                       Theropod

?Velociraptor sp.                                       Theropod

Dromaeosaurid indet.#1                                  Theropod

Dromaeosaurid indet. #2                                 Theropod

?Thescelosaurus garbanii                              Ornithischian
                                             (up to 12-16 feet long)

?Thescelosaurus sp.                                   Ornithischian

Edmontosaurus regalis                        Hadrosaur ornithischian

Edmontosaurus annectens                      Hadrosaur ornithischian
   (= "Anatosaurus")

Anatotitan copei                             Hadrosaur ornithischian
   (= "Anatosaurus" copei)

?Parasaurolophus walkeri                     Hadrosaur ornithischian

Pachycephalosaurus wyomingensis             "Bonehead" ornithischian

Stegoceras edmontonense                     "Bonehead" ornithischian

Stygimoloch spinifer                        "Bonehead" ornithischian
  (= Stenotholus kohleri)

Stegoceras sp.                              "Bonehead" ornithischian

Ankylosaurus indet.                         Ankylosaur ornithischian

?Edmontonia sp.                             Ankylosaur ornithischian

Ankylosaurus magniventris                   Ankylosaur ornithischian

Ankylosaurid indet.                         Ankylosaur ornithischian

Triceratops horridus                        Ceratopsian ornithischian

Torosaurus latus                            Ceratopsian ornithischian

---------------------------------------------------------------------
Comment from pkb: Troodon formosus is also found in the Two Medicine
Formation (72 million years old at it's top).  If T. formosus is
also found in the Hell Creek Formation (~65-67 million years old),
then this theropod has one of the largest temporal ranges
for a dinosaur species (10-12 million years).  I suspect that
the Hell Creek Troodon material (teeth) will turn out be
from new species. This was first proposed by Currie (1990).


Information from:

Various authors, 1990. IN Weishampel, D. B., P. Dodson,
and H. Osmolska (eds.).1990. The Dinosauria.
University of California Press, Berkeley.


Currie, P. J., J. K. Rigby, Jr., and R. E. Sloan. 1990.
Theropod teeth from the Judith River Formation of southern
Alberta, Canada, IN Carpenter, K., and P.J. Currie (eds.).
Dinosaur Systematics: Perspectives and
Approaches. Cambridge University Press.
(information on the Hell Creek Fm. occurrence on page 117).

Holtz, T. 1997. Usenet posts (Internet) (Regarding Caenagnathus
and Aublysodon).

                   End of Part 4

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PART 5.  PLANTS FROM THE MONTANA PART OF THE HELL CREEK FORMATION
        Cretaceous "Hell Creek Faunal Facies"; Late Maastrichtian
            Compiled by, and comments by Phillip Bigelow (1997)
                         Version 0.0.0

Under construction (sorry)

                     End