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Peace river rat

Flat/flat verts?

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Peace river rat

I find quite a few verts that are flat on both sides. How many critters, besides cetaceans are flat on both sides? Thanks.

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ynot

I think most mammals have flat vertebrae.

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Peace river rat
3 hours ago, ynot said:

I think most mammals have flat vertebrae.

I seem to find a broad range of combinations between flat/concave/convex.

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ynot

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LordTrilobite

Mammals in general can't really be characterised by having flat/acoelous vertebrae.

 

Here's a picture of the different types of vertebrae centra there are. Many different animals have different configurations. Finding a vertebra with a certain type may not always give you a good indication as to what group of animals it belongs to. Some animals also have different types of vertebrae in different parts of their bodies.

6efb61689d54a9c8cb8093c83aa1a837.png

 

For example, here are a few fossils from my collections from different groups. Some types of vertebrae appear in many groups, while some appear in some groups at all.

 

An Opistocoelous cervical vertebra from a woolly rhino from the North Sea.

 
An acoelous vertebra of a dinosaur from Morocco

 

A procoelous caudal vertebra of a mosasaur from Morocco

 
Sadly I don't have any other mammal examples in 3D right now. But hopefully this illustrates how variable it can be, not just in mammals but in all animals.

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Harry Pristis

 

 

I don't understand the original proposition.  Flat mammal vertebrae?  Flat in which dimension?  . . . The faces (epiphyses) of the centra, as with cetacean vertebrae?

 

Here's the flattest vertebra I've ever collected . . . Recognize it?

 

 

 

2mystery_hand.JPG

2mysteryC.JPG

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jpc

Harry.... I was going to guess frog, but it would be huge.  

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Ludwigia
2 minutes ago, jpc said:

Harry.... I was going to guess frog, but it would be huge.  

Unless it was run over by a car...sorry! Couldn't help myself. It's been a long day. :blush::P

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Peace river rat
5 hours ago, Harry Pristis said:

 

 

I don't understand the original proposition.  Flat mammal vertebrae?  Flat in which dimension?  . . . The faces (epiphyses) of the centra, as with cetacean vertebrae?

 

Here's the flattest vertebra I've ever collected . . . Recognize it?

 

 

 

2mystery_hand.JPG

2mysteryC.JPG

Yes, flat on the faces (epiphyses)

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