silverybeing said: Question: Since Brontosaurus isn't real, is the name up for grabs? Like if there is a new discovery can scientists say "Okay, we'll name -this- one Brontosaurus".
ummm.. I’m not sure! I don’t think so :0
No. Naming a new genus Brontosaurus would create unnecessary ambiguity, and so is forbidden by the ICZN.
Furthermore, Brontosaurus is a junior subjective synonym of Apatosaurus, and their type species are different: i.e. Brontosaurus is not a valid name only because of a strong consensus that the two species are similar and closely related enough to be placed in the same genus. If Apatosaurus ajax and Apatosaurus excelsus are found to be paraphyletic with respect to another genus (for example, Supersaurus), A. excelsus would not be considered part of the genus Apatosaurus and would need a different genus name—and as the genus Brontosaurus was originally created to hold its type species excelsus, that’s the name it would revert to.
Family Tree Sheds More Light on Transition from Dinosaurs to Birds
I am intrigued by the relatively low number of polytomies going on here. Far lower than typical for this tree - I will have to read the paper. But perhaps when I am less inundated with osteological work to do.
Actually, the compsognathid-ornithomimosaur-maniraptor polytomy isn’t one: the polytomy results from the inclusion of Ornitholestes in the consensus tree (even though it isn’t shown in this cladogram). Excluding Ornitholestes from the consensus results in Compsognathidae being further from the crown group than Ornithomimosauria, as is typical.
Even disregarding that, this is two more polytomies than the previous iteration of the TWG dataset: Therizinosauria was recovered as closer to birds than Alvarezsauria, and Troodontidae was part of Deinonychosauria, in the previous version. Interestingly, though, these new polytomies make the TWG analysis more consistent with other recent analyses such as Cau’s megamatrix.
My dad just came into my room and shouted at me in Klingon.
Am I more embarrassed that he did that or that I know he said I was a disappointment to the empire?
You should be most embarrassed that you’re a disappointment to the empire.
(Source: greenglassapple, via lokidokeyartichoki)