matt martyniuk

Quick ‘n’ dirty picture showing what I know off of the top of my head of tyrannosaurid integument–green is glabrous, red is scaly. Images are from Phylopic, top is Tyrannosaurus rex (Scott Hartman), middle is Tarbosaurus baatar (Matt Martyniuk), bottom is Albertosaurus libratus (Craig Dylke). More impressions are known for Tyrannosaurus rex and Albertosaurus libratus; Tyrannosaurus rex’s integument might be glabrous rather than scaly.

anonymous asked:

Could you show me a timeline of bird evolution from the most recent common aviator of all Eumaniraptorans to the most recent common ancestor of Neornithes and label each one? Thanks

By @ewilloughby - Eosinopteryx was close to the common ancestor of Eumaniraptorans 

Mahakala by Nobu Tamura - this Dromaeosaur was fairly early diverging and would have been similar to an early common ancestor of Dromaeosauridae + Averaptora 

Jinfengopteryx by Matt Martyniuk - this Troodontid was a very early diverging member of the group and would be very similar to a common ancestor for Averaptora 

Anchiornis also by Matt Martyniuk - this early diverging Avialan was often thought to be a Troodontid 

Balaur by @ewilloughby - a fairly strange, if early diverging, member of Euavialae

Sapeornis by Matt Martyniuk - a member of Avebrevicauda 

Eoconfuciusornis - a Pygostylian 

Iberomesornis by Durbed from Wikipedia - an early diverging Enantiornithean 

Archaeorhynchus, a very early diverging Euornithean 

Patagopteryx, an early Ornithuromorphan (From Wikipedia)

Ichthyornis, an early diverging Ornithuran (from http://edennoori.wikia.com/wiki/Ichthyornis

Now it’s pretty hard to come up with a basal member of Neornithes - Neognathae and Paleognathae diverged pretty rapidly, however we do have some traces of possible Neornitheans from the Cretaceous, such as Vegavis:

Ta da!

anonymous asked:

regarding these feathered dinosaurs topic, is it there any idea on their resemblance? Sorry, badly worded, I mean, is it know how the feathers could have looked like? Would they have resembled modern bird's ones or were they too small and short to be considered as such? Also, are there any papers/reports/books/articles/whatever you can recommend that tackle feathered dinosaurs? Thanks in advance btw!

They looked kind of like fur. We have a pretty good idea of what they looked like at different evolution stages

Source: http://www.sci-news.com/paleontology/science-kulindadromeus-zabaikalicus-feathered-herbivorous-dinosaur-02079.html

Kulindadromeus with some pretty primitive feathers 

Source: http://apsaravis.deviantart.com/art/citipati-with-chicks-111315737

Citipati with more advanced feathers 

and there are plenty of articles and books out there! I recommend A Field Guide to Mesozoic Birds by Matt Martyniuk 

Simplified phylogeny of birds and their extinct relatives (extinct forms indicated with a dagger). Aves represents the group of extant birds, their most recent common ancestor, and all of that ancestor’s descendants: the crown group. All groups sharing a more recent common ancestor with Aves than with their closest living relatives (Crocodylia) are part of the stem. Some stem-members share most but not all of the traits of modern birds: Ichthyornis retains teeth, but otherwise has a relatively modern anatomy. But more distant groups have proportionately fewer traits of modern birds. Silhouettes from PhyloPic.org, from the contributors Andrew Farke, FunkMonk, Scot Hartman, Lukasiniho, Matt Martyniuk, Steve Traver, and Emily Willoughby. Silhouettes not to scale

anonymous asked:

Please say which birb each Presidential candidate represents? And also, which birb overall would make a good President (so independent of birb being a candidate)?

Donald trump isn’t a bird he’s a pile of triceratops poo from Jurassic Park

Hilary Clinton is a titanosaur at least she’s a dinosaur but man we really wanted Bernie 

Bernie Sanders is a velociraptor perfect poofy and adorable 

(Matt Martyniuk) 

And I think a raven would make a wonderful president