wow,thers a great knowledge in this forum( I didn't know about ten codes before). well the creatures come into existance is according like how much time before they appeared on earth.the list goes like this for the last 4 billion years the earth was a home for fire and when earth's mental cooled life evolved from simple molecules present in the vast sea and then for the last 3.6 billion years,
simple cells (prokaryotes) existed;
for the last 3.4 billion years,
cyanobacteria performing
photosynthesis(you can call cynobacteria as the first live roaming creatures on earth);
and for the last 2 billion years,
complex cells or multicellular life forms(metazoa) (eukaryotes );
for the last 1 billion years,
multicellular life ;
and for the last 600 million years,
simple animals;
anf for the last 550 million years,
bilaterians , animals with a front
and a back;
for the last 500 million years,
fish and proto -amphibians ;
therefore dinos is not the correct ans as they come into existance after these and others,.
moral:even science don't knows the answers clearly.
.... and for the question that if the bowl is half empty or half fill purely depend upon the person who is filling it and personal positive/negativeness.