Dinosaur general
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Dinosaur general

Dinosaur intelligence

Dinosaur intelligence has been a point of contention for paleontologists. Dinosaurs were once regarded as being extremely stupid animals but have largely been appraised more generously since the dinosaur renaissance. This new found optimism for dinosaur intelligence has led to highly exaggerated portrayals in pop cultural works like Jurassic Park. Paleontologists now regard dinosaurs as being very intelligent for reptiles, but generally not as smart as mammals. Some have speculated that if the Cretaceous–Paleogene extinction event had not occurred, the more intelligent forms of small theropods might have eventually evolved human-like levels of intelligence. -Wikipedia, Dinosaur intelligence

Dinosaur feathers

If you had to film a remake of Jurassic Park with unlimited budget what would you do different? [–]DrBobBakker [S] 18 points 2 months ago Lots and lots of fluff and feathers. AND More dinosaurian motherhood. Family values are important. AND Bright colors on the males in breeding season. Down with dull grey!

DrBobBakker [S] 4 points 2 months ago* The cost per minute per body of good CGI of an animal with hair or feathers goes down every year. It's much cheaper now to have a feathered T-rex than when the first JP movie was released. I don't believe the rumors of naked dino's. I think its a clever marketing ploy to generate buzz. There are signs in Utah highways "Don't drive buzzed."

DrBobBakker [S] 4 points 2 months ago The trend since 1985 is to have more and more epidermal covering. More fluff, more feathers, more quills on more dinosaurs.And more complex social behavior. We know that T-Rex was covered with fine hairlike feathers and its mortal enemy Triceratops had stout quills sticking out of its hide. Check out the Houston Museum Triceratops mummy. -Robert Bakker, Reddit AMA

Most dinosaurs that you know about were covered with feathers. -Francois Therrien, Reddit AMA

Dinosaurs had no facial expressions

When the first rush of cool night air funnels down to his burrow, the aegi pokes his snout out. He has to clear the shattered earth from the crushed burrow walls, pushing away the collapsed earth that plugged the entrance when the raptors fought with the acro. His long, sharp snout wiggles left and right, up and down - an anatomical trick no dinosaur can perform. The aegi has face muscles in his snout, muscles organized into a half-dozen groups that can move his lips and nose. By furball standards, dinosaurs have thin-skinned snouts nearly devoid of muscular tissue.

In fact, dinosaur heads would seem stone-faced and expressionless if the aegi ever stopped to examine them. Raptors can't wiggle their noses, furrow their brows, or scowl at food that tastes bad. Acros can't curl their upper lip high into a full snarl. No dinosaur can put its lips together in front and suck liquids into its mouth.

When dinosaurs want to communicate, they must use a lot of exaggerated body motions - head-bobs, torso-squats, tail-swooshes - because the range of their facial expressions is so limited. Mammals, as they will evolve in the later Cretaceous and beyond, will have far greater subtlety in body language. Dogs and monkeys and finally humans will acquire ever-greater powers of transmitting emotions through the face. -Robert Bakker, Raptor Red, p148

Dinosaur parental investment

Parental investment meant that behaviours could be passed on as well as genes.

Dinosaur evolution

http://www.enchantedlearning.com/subjects/dinosaurs/dinoclassification/

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Really? This shows no impact of the PT extinction. Or maybe that’s the radiation that can be seen within the permian?

Pangea

There were three major phases in the break-up of Pangaea. The first phase began in the Early-Middle Jurassic (about 175 Ma), when Pangaea began to rift from the Tethys Ocean in the east to the Pacific in the west, ultimately giving rise to the supercontinents Laurasia and Gondwana.

The second major phase in the break-up of Pangaea began in the Early Cretaceous (150–140 Ma), when the minor supercontinent of Gondwana separated into multiple continents (Africa, South America, India, Antarctica, and Australia). About 200 Ma, the continent of Cimmeria, as mentioned above (see "Formation of Pangaea"), collided with Eurasia.

The third major and final phase of the break-up of Pangaea occurred in the early Cenozoic (Paleocene to Oligocene). Laurasia split when North America/Greenland (also called Laurentia) broke free from Eurasia, opening the Norwegian Sea about 60–55 Ma. The Atlantic and Indian Oceans continued to expand, closing the Tethys Ocean. -Wikipedia, Pangaea

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