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Happy New Year Everyone

Will start the New Year with something Tom Holtz posted and said

 

"Quick and dirty plot of new Mesozoic dinosauromorph taxa named since 2003. No evaluation of legitimacy of taxa taken into account, but "grey literature" not included. Includes new species & new genera, but not placement of old species into previously named genera"

Looks like 2019 was one of the best years for naming dinosaurs

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My first image is that of a claw you would not see on any Trex of any age its a Nannotyannus hand claw its 4" long from South Dakota :default_clap2:

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I find this very interesting the NHM dino lab posted these images of "holotype" Sauropods from Argentina that are stored in hallways in their museum.  WOW..

 

The holotype of Patagosaurus, Saltasaurus and a nice little Mussaurus skull, capturing about 130 million years of sauropodomorph evolution between them in the collections at PVL

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Now this is what we need from the Kem Kem...an Abelisaurid skull with teeth 

The abelisaurid Majungasaurus crenatissimus from the Late Cretaceous of Madagascar! High-quality preservation courtesy of S. Gutherz

 

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Partial, juvenile hadrosaur dentary from the Liscomb Quarry of the North Slope of Alaska.  Perot Museum

 

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More from the Perot Museum,  Not the prettiest but this tyrannosaur tooth was found up against a Pachyrhinosaurus skull in the type locality of P. perotorum and the Arctic tyrannosaur Nanuqsaurus hoglundi.

 

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A very early ornithischian dinosaur Heterodontosaurus from the earliest Jurassic of South Africa & Lesotho , NHM Dino Lab

 

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For those of you that like Stegosaur's here is an orange creation.  Understand its pretty rare

 

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Brazilian researchers have found a nearly complete fossilized skeleton of the Macrocollum itaquii, the oldest long-necked dinosaur in the world, Triassic in age

 

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A beautiful specimen of Tianyuraptor housed at the Paleontological Museum of Liaoning, courtesy of Peter Makovicky

 

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Michael Ryan posted this maxilla of Daspletosaurus, not sure of locality

 

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Will begin with some non-dino specimens because they are cool and its my show. :D

 

Fabulous specimen of the large predatory archosaur Erythrosuchus, Triassic of South Africa

 

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Smithsonian posted this cool photo

Smilosuchus looks like an enormous Triassic crocodile, but it was actually a phytosaur

 

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This is the cute face of Olivierosuchus, a cousin of ours from the earliest Triassic, South Africa...courtesy of Brandon Peecook.

 

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The type skull of Kudnu mackinlayi, a tiny lepidosauromorph from the Early Triassic Arcadia Formation of NE Australia at Qld museum

 

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The skull of Europasaurus, a dwarf sauropod, next to its close relative: the giant Giraffatitan

 

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For all you T. rex groupies out there here’s some of the dentary teeth from the first skeleton of this species ever found now at

NHM_London, collected by Barnum Brown in 1900, from Wyoming, USA

 

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And will conclude this weeks show with another bone you will not see in any age T rex its from a Nannotyrannus

 

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Really nice fossils - I always look forward to the next Dinosaur Friday/Saturday :) 

 

@Troodon Hope you don't mind me chipping in with this beautiful opalised theropod tooth from Australia (photo courtesy Robert Smith/Australian Opal Centre)

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... And this pair of Araripesuchus (shared by John Pickrell on Twitter)

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... And this skull of a Campylognathoides pterosaur (shared by Jordan Bestwick on Twitter)

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Opalised fossils are the best: a wonderful mix between paleontology and mineralogy!

 

Q. Where do dinosaurs study?

A. At Khaan Academy!...

 

My ResearchGate profile

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4 hours ago, Troodon said:

The abelisaurid Majungasaurus crenatissimus from the Late Cretaceous of Madagascar! High-quality preservation courtesy of S. Gutherz

 

5e0f2593422d7_EJ_T7rdUUAErrho(1).thumb.jpeg.6ecef54492b2b9fc72583704f716c7eb.jpeg

 

A beautiful specimen of Tianyuraptor housed at the Paleontological Museum of Liaoning, courtesy of Peter Makovicky

 

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:wub: Veery cool stuff !

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4 hours ago, Troodon said:

My first image is that of a claw you would not see on any Trex of any age its a Nannotyannus hand claw its 4" long from South Dakota :default_clap2:

 

4 hours ago, Troodon said:

And will conclude this weeks show with another bone you will not see in any age T rex its from a Nannotyrannus

 

 

The Nano hypothesis requires quite a leap of faith at this juncture.  Superficial bone morphology is limited and now osteohistology proves that Nanos are juvenile specimens. 

In light of the new evidence, it strains simple logic to believe in a scenario with only T. rex adults and only juvenile Nanos.  Parsimony (Occam's razor) favors them being synonymous.

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1 hour ago, piranha said:

 

 

 

The Nano hypothesis requires quite a leap of faith at this juncture.  Superficial bone morphology is limited and now osteohistology proves that Nanos are juvenile specimens. 

In light of the new evidence, it strains simple logic to believe in a scenario with only T. rex adults and only juvenile Nanos.  Parsimony (Occam's razor) favors them being synonymous.

 

No it simply requires that the morphology of an juvenile Trex arm be identical to that of an adult one, and different than those of Nanotyrannus all which exist.  

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Maybe it's not clear enough but at the Field Museum there exist an Trex arm/hand which is small and juvenile in nature whose bone morphology is identical to that of larger adult Trex bones.   Then you have this other tyrannosaurid whose arm/hand bone morphology is completely different than those two. 

 

So does it start off looking like an adult, morph to a Nano morphology being a juvenile then morph again to what an adult looks like? I just dont think so.

 

Why I choose to disagree 

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32 minutes ago, piranha said:

I am not intransigent, I will happily agree as soon as there is histological evidence of an adult nano.

 

 

Evidently, great minds think alike: :P

 

“This study is another nail in the coffin of Nanotyrannus. I think it's about time to put that coffin into the ground,” Brusatte says. “Although I hold out hope that an adult Nanotyrannus might be found, at this point I'd say it's about as equally likely as finding an actual fossil unicorn in the same rocks.”  NatGeo LINK

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Well I think thats flawed thinking.   Just because Jane and Petey are still growing they have to be juvenile T rex, why?  Nano's grow and we just dont known how large they get.  They could be Juvie Nanos for all we know.  If it wasn't for all the other evidence that separate Nanotyrannus and Trex I would agree but its there....Braincases that are very different, arms and hands that a different, jaws that are different are just a few examples.   

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And then there is the fighting dinos in a barn in Montana... the supposed Nano there has arms bigger than an adult T rex, yet it is considerably smaller than an adult t rex.  To me, this is a better argument FOR the existence of Nano than this study is for the non-existence of Nano.  I agree with the idea that just cuz Jane and others are still growing, that does mean they are young rexes. They could still be young Nanos.  This same work needs to be done on the fighting dinos carnivore. 

 

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22 minutes ago, jpc said:

And then there is the fighting dinos in a barn in Montana... the supposed Nano there has arms bigger than an adult T rex, yet it is considerably smaller than an adult t rex.  To me, this is a better argument FOR the existence of Nano than this study is for the non-existence of Nano.  I agree with the idea that just cuz Jane and others are still growing, that does mean they are young rexes. They could still be young Nanos.  This same work needs to be done on the fighting dinos carnivore. 

 

Having looked closely at Duelers even those its 99% complete it appeared smaller than Jane so I dont think it's an adult.  Hopefully the lawsuit will be resolved shortly and it will wind up in an OPEN minded museum 

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Thank you for the great pictures! A great way to start out the year!

i also think it’s NOT time to bury nano yet I’m not convinced yet.  
land am I the only one to look at this picture and think that the discoloration around it looks like a body outline?

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2 minutes ago, Randyw said:

i also think it’s NOT time to bury nano yet I’m not convinced yet. 

 

 

Don't worry, the name can be resurrected as soon as there is countervailing evidence to say otherwise.

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Happy new year. Sorry I didn’t have anything to add to the Nano debate sadly. 

A long time ago In a village not far away ....

Barrow on soar is a little village where a famous plesiosaur was excavated in 1851, of the species Atychodracon megacephalus, nicknamed the "Barrow Kipper". The plesiosaur was found in a lime pit outside the village ( Leicestershire has a lot of mineral quarry), and now at the centre of the village is a roundabout with a sign which pictures its skeleton. The skeleton is now on display at the New Walk Museum in Leicester. The village's football club has the skeleton on its badge too. 

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35 minutes ago, jpc said:

I didn't realize it was smaller than Jane.  AND you got to see it/.them??!!

 

  

I got to look at it a couple of times when it was in Montana and then again at the auction in NY.   My observation is based on the skull which looked smaller than Jane but was fractured.  Could be wrong but it needs to get into appropriate hands.  He found another skeleton this summer, specifics being kept quiet.  Saw the hand claw it was a biggie...

 

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1 hour ago, Troodon said:

Feathers

LOL! I originally typed feathers but then decided to go with the more ambiguous body...

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