http://en.wikipedia.org/wiki/Pterosaur
"Pterosaurs were flying reptiles of the clade [group] or order Pterosauria. They existed from the late Triassic to the end of the Cretaceous Period (220 to 65.5 million years ago).
Pterosaurs are the earliest vertebrates known to have evolved [developed] powered flight. Their wings were formed by a membrane of skin, muscle, and other tissues stretching from the legs to a dramatically lengthened fourth [actually fifth] finger. Early species Rhamphorhynchoidea had long, fully-toothed jaws and long tails, while later forms Pterodactyloidea had a highly reduced tail, and some lacked teeth. Many sported furry coats made up of hair-like [feather-like] filaments known as pycnofibres, which covered their bodies and parts of their wings. Pterosaurs spanned a wide range of adult sizes, from the very small Nemicolopterus to the largest known flying creatures of all time, including Quetzalcoatlus and Hatzegopteryx.
Pterosaurs are sometimes referred to in the popular media as dinosaurs, but this is incorrect. The term "dinosaur" is properly restricted to a certain group of terrestrial reptiles with a unique upright stance (superorder Dinosauria), and therefore excludes the pterosaurs, as well as the various groups of extinct aquatic reptiles, such as ichthyosaurs, plesiosaurs, and mosasaurs.
Traditionally, they are organized into two suborders:
- Rhamphorhynchoidea: A group of early, basal ("primitive") pterosaurs, many of which had long tails and short metacarpal bones in the wing. They were small, and their fingers were still adapted to climbing. They appeared in the Late Triassic period, and lasted until the late Jurassic.
- Pterodactyloidea: The more derived ("advanced") pterosaurs, with short tails and long wing metacarpals. They appeared in the middle Jurassic period, and lasted until the Cretaceous-Tertiary extinction event [when they developed into modern birds].
http://en.wikipedia.org/wiki/Rhamphorhynchoidea
http://en.wikipedia.org/wiki/Pterodactyloidea
http://en.wikipedia.org/wiki/Pteranadon
http://www3.interscience.wiley.com/journal/118826512/abstract?CRETRY=1&SRETRY=0
" A new compilation of data for the Lower Cretaceous hints at a broad differentiation between pterosaurs that lived in continental habitats (anurognathids, ctenochasmatoids, dsungaripteroids) and those that frequented marine environments (ornithocheiroids). Moreover, there is evidence of further differentiation within continental habitats, between pterosaurs living in lowland and coastal regions (anurognathids. ctenochasmatoids) and those living in more inland environments (dsungaripteroids). "
Your "evidence" is from Wikipedia? Seriously, have you ever even taken a science class? This is not at all how it's done.
ReplyDeleteAnd by your logic, brontosaurs evolved into giraffes, and Dimetrodon evolved into sailfish. Seriously dude, listing a bunch of similarities does not prove evolution between groups. It's apparent you don't have a grasp at all of how rigorous the scientific process is, and what it requires in order to form a hypothesis.
Artist renderings and images from high school texts are not evidence, either.
Could you please explain how by my logic, brontosaurs evolved into giraffes, and Dimetrodon evolved into sailfish?
ReplyDelete