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PTEROSAUR AND DINOSAUR REMAINS FROM THE
MIDDLE JURASSIC BALABANSAI SVITA IN THE
NORTHERN FERGANA DEPRESSION, KYRGYZSTAN
(CENTRAL ASIA)
by ALEXANDER O. AVERIANOV, THOMAS MARTIN and
AIZEK A. BAKIROV

Abstract: Isolated pterosaur and dinosaur teeth and a
sauropod metatarsal I and manual phalanx V-1 from the
Middle Jurassic (Callovian) Balabansai Svita in the
northern Fergana Valley, Kyrgyzstan, are described and
attributed to the pterosaur taxon Rhamphorhynchinae
indet., a theropod Tetanurae indet., a sauropod
Neosauropoda indet., and a new pachycephalosaurid
Ferganocephale adenticulatum gen. et sp. nov. The
Balabansai theropod is possibly a stem-lineage
representative of Dromaeosauridae. The new
pachycephalosaurid is the oldest representative of the
group and extends its known history by 10?20 myr. The
Balabansai vertebrate assemblage is most similar to
the Callovian assemblages from the Qigu and Upper
Shaximiao formations in China, and intermediate in the
evolutionary level of the taxa present between the
Bathonian assemblages from Wucaiwan and the Lower
Shaximiao formations
(China) and the Late Jurassic Shar Teg fauna from
Mongolia.

OSTEOLOGY AND RELATIONSHIPS OF A NEW
THEROPOD DINOSAUR FROM THE MIDDLE
JURASSIC OF PATAGONIA
by OLIVER W. M. RAUHUT

Abstract: A new taxon of theropod dinosaur is
described as Condorraptor currumili gen. et sp. nov.,
from the Middle Jurassic (Callovian) Can?ado´n Asfalto
Formation of Chubut Province, Argentinean Patagonia.
The taxon is represented by a single fragmentary
postcranial skeleton. Although incompletely known,
Condorraptor is the second most complete theropod from
the Middle Jurassic of Gondwana. The new taxon is
characterized by the absence of a posterior incision
between the fibular condyle and the medial side of the
proximal articular end of the tibia, the pleurocoels
in the anterior cervicals being situated
posteroventral to the parapophyses, and the presence
of a pronounced ?step? between the distal articular
facet and shaft of Mt IV. Pneumatic features of the
vertebral column show strong variation between the
left and right side. Condorraptor gen. nov. can be
referred to the Tetanurae and is a representative of a
global radiation of basal tetanurans in the Early to
Mid Jurassic.





        
                
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