The likenesses inside of the anatomy of the living organisms are used often in order to design the last moments of the ecology
and
of the
behavior of the extinct animals.
An elevated number of
pterosauri is known in order to have an feeding based in great part on convergences presumed approximately their anatomy relatively to the jaw with that one of the bird of recent discovery, called Rynchops.
Using models physicist-doctor-matemati us of the sections of Rynchops and the jaws of the pterosauro, it appears that to peck it is considerable more
energetic expensive of what think previous the Rynchops and the pterosauri, that weigh more than a kilogram, not can peck at all. Still, from anatomical comparisons between the skull highly specialized of
Rynchops and that one of the pterosauri with spouts very conserved, suggest to shapes evil adapted to the contact to skin.
Ours turn out to you refute the hypothesis that the spout commonly used from some pterosauri like method in order foraggiare and to illustrate trabocchetti in order to concur one limitation of the morphologic convergence.
A lot of our acquaintances with respect to the extinct organisms comes
from extinct anatomical comparisons with species. Likenesses
in the morphology they can often be used in order to catch up the conclusions approximately the ecology and the behavior of the extinct animals.
This method is sure valid in many cases.
As far as the feeding and the behavior of pterosauri (the extinguished rectums them of flight). In spite of the considerable interest in the biomechanics of the flight
between the pterosauri, the methods of feeding of these animals are
still little clear. This situation is in the contrast clearly with the behavior of the other rectums them of it was Mesozoica in which the instruments used for the feeding they are consistent to numerous carried out surveyings is works them, is
morphologic that biomechanicses.
On the base of the postulate of convergence in the morphology of the jaw, several pterosaursi have preferred to feed themselves pecking; the activity to fly over the water, excessive pressed with the tip of the dipped lower jaw and with the friction of the preda to contact.
This foraggiare be one technical already see in the species of with spout extinct of the species Aves: Rynchopidae, in which all and three the species of Rynchops foraggiano nearly exclusively feeding itself with spout.
The tipologia spout is the behavior that has been documented occasionally for some terns and gulls, but foraggiare habitually, using this method has been only observed in Rynchops. The behavior to peck of
Rynchops very is documented and is more effective in the zones of
calm and little deep water and where aggregations of fish or small crustaceans turn out abundant over the surface of the water.
Even if the species with blocked spout occasionally using of the fish
like methods alternated, ability gives they to you to block the preda to it, therefore the species without spout has limitations.
Many authors have discussed the feeding obtained from the spouts in the pterosauri,
but the hypothesis remains debatable. Pterosauro the main Rhamphorhynchus saying was the first species with spout discovered in the species of the Pterosauri.
And'' state considered that the Pteranodonte has used one technical in order to capture plancton and other small creatures from the surface of the water during the flight.