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Other Tyrannosaurs |
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Prior to designing
Tyrannosaurs, extensive effort went into research the subject. A
primary goal was to identify the species that the poster would show.
The species listed below were rejected because there was simply not
enough known about them for our artist to accurately reconstruct them. |
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Futabasaurus lambert (Lambert,
1990) |
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Name Means: |
"Futaba Lizard" |
Length: |
Unknown |
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Pronounced: |
few -Tah-bah-Sore-us |
Weight: |
Unknown |
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When it lived: |
Late Cretaceous - 87 MYA |
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Where found: |
Japan |
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Futabasaurus
may be a Japanese member of the tyrannosaur family.
However, only one bone has been found so it is difficult to determine
exactly what this animal was or what it looked like. In the
Mesozoic Era - the era in which dinosaurs lived - Japan was connected
to the rest of Asia. It is possible that Futabasaurus is really
Tarborsaurus bataar, the great meat-eater from Cretaceous
Period China. |
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Itemirus medullaris (Kurzanov
1976) |
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Name Means: |
"Itemir ? " |
Length: |
Unknown |
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Pronounced: |
EYE-te-MEER-us |
Weight: |
Unknown |
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When it lived: |
Late Cretaceous - about 90 million years ago |
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Where found: |
Uzbekistan. |
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Itemirus medullaris
was a small,
theropod dinosaur from the Central Kyzlkuum Sands (Late
Cretaceous, late Turonian Age) of Dzhara-Kuduk, Itemir, Uzbekistan.
It is known only from a braincase (the part of the skull that
contains the brain) It shares with Stokesosaurus
in the presence of very deep pockets on the lateral surface of the
basipterygoid process. The type species is I. medullaris. |
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Shanshanosaurus huoyanshanensis (Dong, 1977) |
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Name Means: |
"Shanshan Lizard" |
Length: |
8 feet (2.4 meters) |
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Pronounced: |
shan-SHAN-uh-SAWR-us |
Weight: |
(110 - 200 lb). |
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When it lived: |
Late Cretaceous - around 83-65 million
years ago |
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Where found: |
Shanshan, China |
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Known only from a partial skull and a few
bones. The skull shows that Shanshanosaurus had a large
wedged-shaped head, small eyes, sharp teeth, a long neck and legs 3
times as long as its arms. It shares with advanced tyrannosaurs
a reduced maxillary and dentary tooth count. Additional features
demonstrate the tyrannosaurid nature of this taxon (Holtz in press a,
b), but its precise position among the tyrant dinosaur cannot be
established pending more detailed study of the specimen. |
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Siamotyrannus isanensis |
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Name Means: |
"Siam Tyrant" |
Length: |
23 ft.(7 meters) |
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Pronounced: |
sye-Am-oh-tye-Ran-us |
Weight: |
1.5 tons (2,700 kilos) |
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When it lived: |
Early Cretaceous - 95 MYA |
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Where found: |
Thailand |
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Siamotyrannus is the earliest
known member of the tyrannosaur family. This medium-sized
carnivore seems to be about halfway evolved into a T. rex. A number of
scientists believe tyrannosaurs originated in Asia and this discovery
supports that theory. The genus is based on pelvic and tail vertebrae,
no skull material was discovered for Siamotyrannus. It has
features that seem to show an intermediate stage of evolution between
the allosaurs and the tyrannosaurs. Not yet described. |
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Stokesosaurus clevelandi |
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Name Means: |
"Stokes Lizard" |
Length: |
13 feet (4 m) |
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Pronounced: |
Stoke-so-Saw-rus |
Weight: |
Unknown |
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When it lived: |
Jurassic to Cretaceous - around
150-145 million years ago |
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Where found: |
Utah |
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Stokesosaurus
may have been the first member of the tyrannosaur family. Known
only from a few bones, this dinosaur provides tantalizing clues to the
possible evolution of the tyrannosaur lineage. Discovered in
the famous Cleveland-Lloyd quarry, scientists hope to find more of
this creature among the many thousands of fossils discovered this bone
bed. Until the discovery of a braincase, it was thought that
Stokesosaurus might have belonged to the ceratosaurs. |
| Iliosuchus incognitus
megalosaurus |
| |
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Itemirus medullaris |
| Itemirus medullaris from the Central Kyzlkuum
Sands (Late Cretaceous, late Turonian Age) of Dzhara-Kuduk, Itemir,
Uzbekistan, is known only from a braincase (Kurzanov 1976). It shares
with Stokesosaurus in the presence of very
deep pockets on the lateral surface of the basipterygoid process. |
| Itemirus medullaris
|
| |
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Tonouchisaurus mongoliensis
(Barsbold, 1994)
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Name Means: |
"Mongolian ? " |
Length: |
3 feet |
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Pronounced: |
TON-ouch-eh-SAWR-u |
Weight: |
Unknown |
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When it lived: |
Cretaceous |
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Where found: |
Mongolia |
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This dinosaur is known only from
newspaper
accounts. It discovered
by a civil engineer named Tonouchi,
It is reputedly a small theropod
(possibly an ancestral tyrannosaur ) with relatively short forelimbs
and relatively long hind limbs. |
Tyrannosauroidea
| |?-Iliosuchus incognitus
| |--Dilong paradoxus
| `--+--+--Bagaraatan ostromi
| | `?-Xinjiangovenator parvus
| `--+--Stokesosaurus clevelandi
| |--Aviatyrannis jurassica
| |--Dryptosaurus aquilunguis
| |--+--Labocania anomala
| | `--"Alashansaurus" maortuensis
| `--+--Eotyrannus lengi
| `--+--Appalachiosaurus montgomeriensis
| `--Tyrannosauridae
| |*-Albertosaurus? incrassatus
| |*-Alectrosaurus olseni
| |*-Aublysodon mirandus
| |*-Aublysodon? amplus
| |*-Aublysodon? cristatus
| |*-Aublysodon? lateralis
| |*-Deinodon horridus
| |*-Deinodon? falculus
| |*?Deinodon? grandis
| |*-Deinodon? hazenianus
| |*-Deinodon? kenabekides
| |*-Tarbosaurus? periculosus
| |--Albertosaurinae
| | |--Gorgosaurus libratus
| | `--Albertosaurus sarcophagus
| `--Tyrannosaurinae
| |?-Alioramus remotus
| |--Daspletosaurus torosus
| `--+--Tarbosaurus bataar
| |--Tarbosaurus? luanchuanensis
| |?-Tarbosaurus? zhuchangensis
| `--Tyrannosaurus rex
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Edugraphics.Net | Feenixx Publishing |
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