This became the mainstream view until the 1970s, when a new look at the anatomical evidence combined with new data from maniraptoran theropods led John Ostrom to successfully resurrect the dinosaur hypothesis. ❋ Unknown (2010)
They had black-and-white feathers and the faces of toothy owls along with the typical maniraptoran sickle-claw. ❋ Sean Craven (2009)
At least, lets wait until those studies are in before shaking up the maniraptoran tree. ❋ Unknown (2005)
The size and curvature of the claw and dig marks suggest they were probably left by the feet of a maniraptoran theropod. ❋ Unknown (2010)
The proximal end of the carpometacarpus is a large, trochleated, convex lump that is very obviously homologous with the semi-lunate carpal bone of non-avian maniraptoran theropods. ❋ Unknown (2010)
Epidexipteryx: bizarre little strap-feathered maniraptoran The Mesozoic birds with weird, plastic-strip-style tail structures And given that I've said negative things about the BAND movement, you might like to see ... ❋ Darren Naish [email protected] (2010)
I don't understand why they think this tells you anything about the affinities of birds (exactly the same developmental pattern is seen in maniraptoran theropods). ❋ Darren Naish [email protected] (2010)
The size and curvature of the claw indicates that it was a maniraptoran theropod - carnivorous dinosaurs including velociraptors and the ancestors of modern birds among their ranks. ❋ Unknown (2010)
Epidexipteryx: bizarre little strap-feathered maniraptoran TrackBacks ❋ Darren Naish [email protected] (2010)
Crocodiles split off relatively early from the phylogeny (again, think geneaology) that would result first in dinosaurs, then eventually in maniraptoran theropod dinosaurs and their highly specialized descendants: living birds. events. ❋ Unknown (2009)
Well we do have dinosaurs today …. they're just highly modified maniraptoran theropod dinosaurs known as birds. ❋ Unknown (2009)
Vertebrate paleontologist Jack Horner has proposed in his recent writings, including a book, that it might be possible to switch on "turned-off" genes within chickens to create a living non-avian theropod dinosaur (Remember, of course, that technically, all birds should be regarded as highly "derived", quite specialized, maniraptoran theropod dinosaurs.). ❋ Unknown (2009)
One example: the size and shape of the sternal plates in non-avian coelurosaurs might have important implications for the respiratory physiology used by these animals (read on), yet Ruben and colleagues have repeatedly shown a schematic and incorrect diagram that shows the maniraptoran sternum to be a tiny little blob located along the ventral midline. ❋ Unknown (2009)
Likewise, James and Pourtless's paper in Ornithological Monographs states forthrightly that when it comes to the theropod dinosaur-to-bird hypothesis, "Criticism has usually been dismissed, often with the comment that no more parsimonious alternative has been presented with cladistic methodology," further stating that "uncertainties about the hypothesis that birds are maniraptoran theropods are not receiving enough attention." ❋ Unknown (2009)
These analyses not only raise significant reasons for doubting the maniraptoran theropod-dinosaur-to-bird ( "BMT") hypothesis, but they show that there is much discomfort even within the Darwinian scientific community about how dissent from the BMT hypothesis is not being heard. ❋ Unknown (2009)
The ScienceDaily article observes that some aspects of bird morphology are simply incompatible with the standard hypothesis that birds evolved from maniraptoran theropod dinosaurs: ❋ Unknown (2009)
