Name: Tapejara
(Ancient Entity).
Phonetic: Top-ay-har-ah.
Named By: Kellner - 1989.
Classification: Chordata, Reptilia, Pterosauria,
Pterodactyloidea, Tapejaridae, Tapejarinae.
Species: T. wellnhoferi (type).
Diet: Although usually depicted as a piscivore,
Tapejara is sometimes considered to be a Frugivore.
Size: 3.5 meter wingspan.
Known locations: Brazil - Santana Formation.
Time period: Albian of the Cretaceous.
Fossil representation: Well preserved specimen.
The
phylogentic classification of Tapejara has been
quite turbulent with a
total of three species once being attributed to the genus with the one
surviving species is the first type specimen, Tapejara
wellnhoferi. The
two other species Tapejara imperator and Tapejara
navigans have since
been split to form the new genus Tupandactylus.
Another genus name,
Ingridia, was also put forward as a re-assignment of
Tapejara navigans.
However the authors of the proposal used T.imperator
as the type
specimen, and since this happened several months after Tapera
imperator
was renamed Tupandactylus, Ingridia
is now considered a junior synonym
of the genera. Tapejara navigans was subsequently
added to
Tupandactylus in 2011.
As
a living pterosaur,
the crest on Tapejara would
have almost certainly
been a display device as opposed to functional appendage. By the time
of the mid Cretaceous when Tapejara lived, the
pterosaurs had developed
a multitude of different crests of various shapes and sizes. Had the
reason for the crest been aerodynamic, it would have been likely that
the pterosaurs would have developed only one or two different kinds to
suit different lifestyles.
No
one seems able to agree on a single feeding strategy for Tapejara.
Although most have depicted Tapejara as
piscivorous, plucking fish out
from the sea, some have suggested the beak as being more suited for
feeding upon the fruits of mid Cretaceous plants. Some depictions even
have Tapejara living as a scavenger, flying around
looking for
carcasses. To add further confusion to the nature of Tapejara,
the
scleral rings suggest a cathemeral pterosaur, meaning that Tapejara
was
active for short periods during both the day and the night.
Further reading
- A new edentate pterosaur of the Lower Cretaceous from the Araripe
Basin, northeast Brazil, A. W. A. Kellner - 1989.
- Short note on the ingroup relationships of the Tapejaridae
(Pterosauria, Pterodactyloidea, A. W. A. Kellner & D. A. Campos
- 2007.
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