We all love and know Nanotyrannus, he was made famous by the horribly innacurate jurassic fight club. But is it really its own genus? It could be a its own genus but it also could be a Baby T. rex. What do you think it is?
Several specimens of the enigmatic tyrannosaurid dinosaur Nanotyrannus lancensis have recently come to light. These new specimens, derived from the upper Maastrichtianaged sediments of the Lance and Hell Creek Formations of Wyoming, South Dakota, and Montana, along with a recently described juvenile specimen of Tarbosaurus bataar from the Nemegt Formation of Bugin Tsav, Mongolia, provide new information that unequivocally demonstrates that this dinosaur is unique and clearly not a juvenile Tyrannosaurus rex, as proposed by some other researchers. Comparisons with known and new specimens of Tyrannosaurus rex show a host of characters that support the taxon, Nanotyrannus lancensis. These characters include: consistent substantially greater maxillary and dentary tooth counts, unique general tooth morphology (especially for the first maxillary and dentary tooth positions), a unique exit for the V-2 cranial nerve, unique pneumatopores in cranial elements, a shallow (as opposed to a deep) antorbital fossa, the presence of a long linear groove on the lateral aspect of the dentary, a morphologically unique furcula, an outward facing scapular glenoid, a proportionally and absolutely larger manus, the presence of third digit manus phalanges, and the presence of an anterior iliac hook.
from page 159 on the pdf
Last Edit: Feb 14, 2014 21:36:47 GMT by Allosaurus
Post by Hatzegopteryx on Jun 14, 2014 15:57:32 GMT
We have no clear evidence to suggest Nanotyrannus could be an actual genus, even more given the irrefutable fact that dinosaur specimens vary by a considerable amount, yet when in the same species, examples being the many Tyrannosaurus rex specimens that vary in morphology substantially.
Hatzegopteryx: That's not even the beginning, the whole forum is disturbingly lethargic.
Jun 14, 2014 15:49:29 GMT
Spinosaurus Maroccanus: I'm quite surprised how no one has touched the Argentina 97ma thread
Jun 14, 2014 15:20:28 GMT
Hatzegopteryx: This forum needs some serious attention; I'll be at it for a moment, unless I get other tasks that do not allow me to do so.
Jun 6, 2014 19:13:55 GMT
Hatzegopteryx: It's a genetic fallacy. It's basically an argument that intends to discredit the opponent's position by asserting the opponent's failure to act consistently in accordance with that position.
May 26, 2014 20:47:51 GMT