Another Dinosaur Friday

[Troodon]

Wow its already the 17 of January where has the year gone?  Well always time for some cool photos of some great fossils to keep us going

 

Its not unheard of to find dinosaur bite marks on a fossil. This Triceratops pelvis on display at Museum of the Rockies has Tyrannosaurus bite marks on it (red arrows)

 

 

One way to identify a theropod bone is to see if they are hollow, another way is to look at their vertebra most are pneumatized, have a honeycomb structure.  Here is an example of a T rex vertebra

 

 

 

You hear alot about the Nanotyrannus associated with the Dueling Dinosaurs but here is a photo of the foot of other partner in this dynamic due a Triceratops.  Complete ceratopsian feet are rare and this is the ventral view of one.

 

in the less prepped version

 

 

 

Mike Tribold posted this photo of Axestemys infernalis, a new soft shelled turtle from the Hell Creek Formation.  I am sure Mike will have it on display at his booth at the Tucson 22nd Street Show

 

More info on this turtle can be found here

https://palaeo-electronica.org/content/2019/2827-a-new-species-of-trionychid

 

 

 

 

The lower jaw of the pterosaur Liaodactylus, with its numerous and extremely slender teeth.  At 160 million years old, this is the earliest evidence of adaptations for filter-feeding in pterosaurs.

Info by Jordan Bestwick

 

 

 

Check out these loooong flight feathers on the wings of Confuciusornis sanctus. Courtesy of Talia Lowi-Marri

 

 

 

 

Palaeontological Institute in Moscow gives us the rather mean-looking Archosaurus rossicus, from the very end of the Permian (~255 Mya) in Russia. Skull is a bit under half a meter long.  Not something you want to meet hiking in Siberia.

 

 

 

 

The Supraorbital horn of Baby and Juvenile Triceratops (or Torosaurus), courtesy of the  BHI

 

 

 

Carnotaurus sastrei, original holotype skull. photo by Damian Perez

 

 

 

Tom Holtz shared a different view of the Tyrant King skull

 

 

 

From the Smithsonian's NMNH Deep Time exhibit, a beautiful Gorgosaurus libratus skull

 

 

 

Here is a photo that compares different Tyrannosaurid finger bones digit I-1. 

 

From left to right :  Gorgosaurus TVM 2001.89.1, Nanotyrannus BHI-6437, adult T.rex MOR-980, and sub adult T.rex TCM 2001.90.1.

Your can see on similarities with the two on the right both of Trex of different ages.  Interesting thought the paleontologists said the younger one should be longer 

 

photo P. Larsen

 

 

 

 

[Manticocerasman]

The Carnotaurus is impressive 

[dinosaur man]

7 minutes ago, Manticocerasman said:

The Carnotaurus is impressive 

Agreed, I’ve only seen a Carnotaurus fossil once and that was at the Canadian Museum of Nature in Ottawa. Here it is right behind the Daspletosaurus holotype. Such an amazing looking creature! Amazing topic @Troodon, love your dinosaur Friday’s!!

[FossilNerd]

Love your dinosaur Fridays Frank! We get to see some great photos, and I almost always learn something new! 
 

1 hour ago, Troodon said:

At 160 million years old, this is the earliest evidence of adaptations for filter-feeding in pterosaurs.

For instance... I didn’t know the above. Off I go to find out more.  

[Coco]

1 hour ago, Troodon said:

Palaeontological Institute in Moscow gives us the rather mean-looking Archosaurus rossicus, from the very end of the Permian (~255 Mya) in Russia. Skull is a bit under half a meter long.  Not something you want to meet hiking in Siberia.

 

This Archosaurus is very special with the prominence of its upper jaw. Its superior teeth remained in the void? What were they for? Or is it missing a piece?

 

Coco

 

[Troodon]

17 minutes ago, Coco said:

This Archosaurus is very special with the prominence of its upper jaw. Its superior teeth remained in the void? What were they for? Or is it missing a piece?

 

Coco

 

Not very familiar with this species.   Probably used to capture fast moving prey since they were most likely semi-aquatic 

[RJB]

Dinosaur Friday.  Purty dang cool.  Never seen so much amazing dino stuff on one thread!  When is Dinosaur Saturday? 

 

RB

[Troodon]

23 minutes ago, RJB said:

 When is Dinosaur Saturday? 

 

RB

Been there, done that 

 

 

[jpc]

 

Quote

 

 

Here is a photo that compares different Tyrannosaurid finger bones digit I-1. 

 

From left to right :  Gorgosaurus TVM 2001.89.1, Nanotyrannus BHI-6437, adult T.rex MOR-980, and sub adult T.rex TCM 2001.90.1.

Your can see on similarities with the two on the right both of Trex of different ages.  Interesting thought the paleontologists said the younger one should be longer 

 

photo P. Larsen

 

 

 

 

Ken-

How much of the BHI Nano is there?  Why is Pete L calling this a Nano finger?   I could ask Pete, but he is busy prepping for Tucson I imagine. 

 

[Troodon]

9 minutes ago, jpc said:

 

Ken-

How much of the BHI Nano is there?  Why is Pete L calling this a Nano finger?   I could ask Pete, but he is busy prepping for Tucson I imagine. 

 

No idea how much 6437 they have..will ask him at tucson.

It is a finger bone, one circled in illustration 

 

[jpc]

Inquiring minds want to know.  

[Troodon]

52 minutes ago, jpc said:

Inquiring minds want to know.  

I think BHI 6437 is the Bloody Mary specimen.. replica material from the dueling dino Nanotyrannus specimen 

[Pemphix]

3 hours ago, Coco said:

This Archosaurus is very special with the prominence of its upper jaw. Its superior teeth remained in the void? What were they for? Or is it missing a piece?

 

Coco

 

You may find some answers here: https://www.researchgate.net/publication/260474044_Unique_Vyazniki_biotic_complex_of_the_terminal_Permian_from_Central_Russia_and_the_global_ecological_crisis_at_the_Permo-Triassic_boundary