[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Pterosaur material from Jurassic of Tendaguru (Tanzania), Africa

From: Ben Creisler

A new online paper:

Fabiana Rodrigues Costa, Juliana Manso Sayão & Alexander Wilhelm Armin
Kellner (2014)
New pterosaur material from the Upper Jurassic of Tendaguru (Tanzania), Africa.
Historical Biology (advance online publication)

The pterosaur fossil record from Africa is exceedingly scarce and one
of the least known for any continental land mass. The specimens here
described are housed at the Naturkundemuseum of the Humboldt
University and consist of two cervical vertebrae, a coracoid and a
wing metacarpal recovered from the Upper Jurassic Tendaguru Formation,
Tanzania. Due to the general morphology and the absence of a lateral
pneumatic foramen in both vertebrae, as well as the presence of a
longitudinal depression, not previously reported in pterosaurs, we
consider these specimens as representatives of a new species of
Azhdarchidae. Moreover, because the coracoid, which bears three
well-developed pneumatic foramina, has a well-excavated depression
that is medially positioned at the posterior face of the acrocoracoid
process, we regard this as a new basal pterodactyloid species. The
wing metacarpal is greatly elongated and clearly belongs to
Pterodactyloidea. Its elongation and slender aspect, as well as the
sub-triangular shape of its proximal articular end, likely place it
within the Tapejaroidea. The material here described shows the
potential of these deposits to provide more informative pterosaur
material and provisionally extends the oldest record of azhdarchids to
the Kimmeridgian–Tithonian of Africa.