What is a Dinosaur?

Mosasaurus are usually referred to as Marine Reptiles.

Indeed but Marine Reptiles is a very broad term since some Marine Reptiles belong to either Archosaurmorphs, Lepidosaurmorphs, or Pantestudines (Turtles, Pliosaurs, Plesiosaurs, and Ichthyosaurs; whether you consider them an archosaur or lepidosaur is up in the air for paleontologists although fossil evidence and genetic evidence seem to imply that Pantestudines are a type of archosaurmorph)

Interesting Xenotaris!

When it comes to Dinosaur science, I do my best to find the facts and bust the myths. :)

^Time for a test then (DON'T LOOK IT UP). What is T.rex's closest living relative?

Hint: It has orange feathers.

^EDIT THIS AND DELETE IT IT GIVES THE ANSWER.

MUHAHAHAHAHAHHAHAHAHAHAHHAHAHAHHAHAHAHAHAHA

I'm doing it lol.

I don't know how to delete lol...

Well i edited it to a hint 3rd lol

a chicken!

YES!

I put it too but GG made me change it lol

I was going to say Tarbosaurus and Zhuchengtyrannus, seeing the chicken is distantly related to the Tyrannosaurids; while birds are more closer related to Troodontids.

Xenotaris GG said living relative.

Oh darn, I should of read that closer. Well all birds are its closest living relatives. Given that both Tyrannosaurids=Tyrannosauroids and Avians are both members of Coelurosauria.

^The answer is the chicken. Turkey's being a close second.

Chickens are not Tyrannosaurids nor are Chickens basal birds, far from it. Also chickens are fairly recent evolution, now turkeys evolved 23 million years ago.

Look it up my friend, chickens are the closest living animal to Tyrannosaurus.

I did, I'm a dinosaur enthusiasts. All Birds are distantly related to T. rex. 

With your logic, it would be saying that Pigs are closely related to humans. When Humans are primates and Pigs are Artiodactyla

Chickens evolved from (through the process of domestication) Red junglefowl which its self belongs to other Junglefowls which they themselves belong to a pheasant subfamily Phasianinae which belongs to main pheasant family Phasianidae, which shares the order Galliformes with other similiar birds such as Numididae (Guineafowl), Odontophoridae (New World Quails), Cracidae (basal Galliformes), and Megapode (Brush-turkey and Scrubfowls) this entire clade is only 45 million years old, go any further the less chicken the chicken's ancestor gets and the more primitive bird it gets all the way until you find the last common ancestor of all modern birds until you finally reach the clade Paraves which is the last common ancestors to all birds, Troodons, and Dromaeosaurs (Raptors)

The last common ancestor between Modern Birds and Tyrannosaurus was 165 million years ago.

Chickens first appeared 6000 BC, far to recent to be a relative to a Tyrannosaurid

Chicken T.rex closest relative.

Smithsonian T.rex chicken related.

T.rex is related to all land fowl, but chicken is its closest biological relative. However, they are not related 100% directly.

Your using articles that are about Jack Horner? That guy is a quack.

Also the reason they say chicken is because its the most familiar Bird, but in reality all birds are distantly related to T. rex but Birds (chickens included) are far more related to the Raptors than any Tyrannosauroid. Freaking Dromaoesaurids/raptors actually share a common ancestors with all birds (chickens included)!

Whoever wrote those articles are freaking stupid, Dromaeosaurids and Troodontids have far more bird traits than any Tyrannosauroid or Tyrannosaurid.

https://en.wikipedia.org/wiki/Paraves

Go to wikipedia and any other source for dinosaur knowledge. I can assure you, they will all say that tyrannosaurs and chickens share the most similarities and are the closest related--even though they are not. Jack Horner is a quack, but the articles are not.

Dude are you trolling me?

What part of Chickens plus Paravaes not closely related to T. rex you don't understand. I visit wikipedia and it supports my views, I have like a Kagillion dinosaur books stuffed in my bookshelves.

Article

You don't seem to understand. They are not 100% related, but of all birds, chicken is the closest to T.rex.

Convergent Evolution then, how could Chickens be the closest to T. rex when T. rexes aren't even a part of Bird Evolution *facepalm*

Yes, by convergent evolution. Chickens are the closest, of ALL the birds, to T.rex.