Spinosaurus had a rather unusual tail

[Abstraktum]

While we're at the topic: Do we have the tails from other Spinosauridae? Is this maybe a feature that is shared by all or most Spinosauridae? Like Suchomimus or Baryonyx?

[Troodon]

7 hours ago, BobWill said:

I didn't read all of the material posted here so this may have been brought up already but if not I wanted to get some feedback on this idea. With all this focus on the tail we shouldn't forget the original speculation on the reason for the sail. Different ideas were floated but now it seems likely it may have been used more like the keel of a sailboat, for stability. When fully submerged the movement of the tail would have caused some back and forth movement of the body and the sail could have worked to dampen that effect making for a straighter course through the water with less wasted motion. I don't remember if this was one of the original theories or not. Thoughts?

 

Partially addressed in Henderson's buoyancy paper 

 

https://peerj.com/articles/5409/

 

2 hours ago, Abstraktum said:

While we're at the topic: Do we have the tails from other Spinosauridae? Is this maybe a feature that is shared by all or most Spinosauridae? Like Suchomimus or Baryonyx?

Not sure we have much of a tail on other Spinosauridae probably why the paper did not mention them but compared it to Allosaurus and coelophysis.

[LordTrilobite]

6 hours ago, Abstraktum said:

While we're at the topic: Do we have the tails from other Spinosauridae? Is this maybe a feature that is shared by all or most Spinosauridae? Like Suchomimus or Baryonyx?

Ichthyovenator actually kinda looks like it might have a similar condition.

[TyBoy]

39 minutes ago, LordTrilobite said:

Ichthyovenator actually kinda looks like it might have a similar condition.

 

I dont think thats the tail but the dorsal verts and a reconstructed sacrum.  A couple of caudals which do look similar but to little to say much.

 

 

 

[Haravex]

This is the known elements of suchomimus 

 

Sadly it would seem nothing has been published about the post cranial elements, if certain paleontogists where to focus more of providing post cranial elemnts in journals instead of just focusing on the cranial and producing tv shows science might have a better understanding of this family of dinosaurs.

[LordTrilobite]

On 5/1/2020 at 8:51 PM, TyBoy said:

I dont think thats the tail but the dorsal verts and a reconstructed sacrum.  A couple of caudals which do look similar but to little to say much.

 

Looks like 4 caudals in the photo to me. And the last two missing in the picture you linked. And the spines look quite long. Similar to the mid anterior caudals of the new Spinosaurus tail.

[Abstraktum]

Thx everybody for the infos

So it is at least possible other Spinosaurids might have similar features as well. Guess we just have to wait until more stuff has been dug up  

[Tidgy's Dad]

A further article from the excited Moroccan World News :

https://www.moroccoworldnews.com/2020/05/301406/moroccan-shows-dinosaur-like-no-other-could-swim-using-tail/

[dinosaur man]

Just found this which shows Ichthyovenator with a tail fin.

[Troodon]

Natural History Museum article

 

https://www.nhm.ac.uk/discover/news/2020/may/dinosaur-diaries-spinosaurus-sauropod-necks-starry-lizard.html

[Troodon]

Nice article by Mark Witton...good but never addresses Sigilmassasaurus 

 

http://markwitton-com.blogspot.com/2020/05/spinosaurus-2020-thoughts-for-artists.html

[Abstraktum]

I didn't found a better topic for this 

Can anyone please tell me this is a photoshop  

 

 

[Troodon]

Proof that non-avian dinosaurs never became extinct they just miniaturized.