Why are there no dinosaurs anymore?
There have been speculation on the reasons of possible catastrophic events
All these hypotheses do not explain, while selected dinosaurs died, others not. You
will find the most propable theory by clicking on the link.
Temperature caused manifastation of dinosaur babies. It is known
that the eggs of today living reptils are sensitive to breeding temperature.
Above a certain breeding temerature only male animals slip from the eggs,
while below a breeding temperature only female reptils are born. Dramatical
temperature changes at the end of the creaceous period therefore could be
responsible for a loss of sexual partners.
Death by suffocation. This hypotheses (the pele hypotheses) assumes
that the rise of continent triggered the release of large amounts of carbon
dioxide, while the dinosaurs, used to live in oxygen rich environment, must
have suffered from this change.
Wiping out by egg muck. It is assumed that small mammals looted
the nests of the dinosaurs.
Super nova explosion.When a star is exploding the edmitted radiation
increases within hours or days by a factor of about 100,000,000. Such a
massive amount of radiation with a large amount of x-rays could have damaged
large animals like the dinosaurs.