occur on the farm Otjihaenamaparero
The tracks occur in sandstones of the 190
million years old Etjo Formation.
The sands formed these sandstones accumulated under
increasingly arid conditions as wind blown dunes similar
to the Namib Desert today.
Numerous reptiles lived in the interdune areas,
but as the climate became drier, these animals were
forced to concentrate near waterholes, small lakes
and rivers fed by occasional rainfalls and thunderstorms.
Inevitably, their feet left imprints in the wet sediment
around the water.
Later these imprints were covered by other layers
of wind blown sand, and were preserved as trace fossils
when the sand solidified into rock due to the pressure
that built up as they were buried deeper and deeper.
At Otjihaenamaparero, two crossing tracks
consist of more than 30 imprints with a size of approximately
45 by 35 cm. The longer tracks can be followed for
about 28 meters. There is a distance of some 70 to
90 cm between individual imprints as well as some
tracks comprising smaller imprints of about 7 cm length
and spaced about 28 to 33 cm apart (Gührich,
1926).
All tracks show the form of a three toed, clawed foot
very well, and from their arrangement it can be deducted
that they were made by the hind feet of a bipedal
animal.
Unfortunately, no body fossils of creatures
that could be responsible for the tracks have been
found in the area so far, and one can therefore only
use comparison with other sites for identification.
Worldwide, about 900 dinosaur species are
known through the finds of body fossils, however,
only a few dozen footprint types have been discovered
(Lockley, 1991).
From these it can be concluded that the dinosaur who
left the footprints at Otjihaenamaparero possibly
belonged to the large order of >
THERAPODA <, which comprises all the
carnivores.
The dimensions and the depth of the imprints
suggest that the dinosaur had an appreciable size.
Due to the unfavourable changes in climate described
above, it can be assumed that the animals became extinct
not long after they left their footprints.
There are a number of localities in the Etjo
Sandstone that contain dinosaur footprints, however,
Otjihaenamaparero is the most impressive one. The
site has been declared a
< National Monument >,
and the footprints are protected by law.
Age of the Dino-Tracks approx. 219 million years.
Big Tracks:
> CERATOSAURIA
<
Small Tracks: >
SYNTARSUS <
Gührich, G. (1926): Über Saurier-Fährten
aus dem Etjo – Sandstein,
vom Südafrika. Palänt. z., 8(1), 112-120
Lockley, M. (1991): Tracking Dinosaurs. 238
pp, Cambridge University Press, Cambridge.
Please click „Links" for further
information about the Dinosaur footprints on our Guest
farm.
Admission fee Dinosaur's
Tracks:
Adults: 20 N$/Rand
Children (6-16 years old) : 10 N$/Rand
The dinos in the river-scenery are from: www.dinosaur.net.cn/Museum
www.prehistoria.piwko.pl/gal_theropoda.htm |