Marine? and mammal? fossils from a collection

[thisfossilguy2006]

I recently acquired a large collection of fossils and I need help identifying them.

#1 This was found along Charmouth beach in the pebbles so I don't know the geological age.

#2 These are from Petersfield from a stream. Again, no idea of the age of it.

#3 and #4 I don't know where these were found but I'm pretty sure they belonged to some sort of mammal.

[Monica]

#1 looks like it could be graptolites, but perhaps it could also be part of a bivalve (i.e. the hinge)?

[Bobby Rico]

No 1 Graptolites for me too.

[thisfossilguy2006]

22 minutes ago, Monica said:

#1 looks like it could be graptolites, but perhaps it could also be part of a bivalve (i.e. the hinge)?

 

21 minutes ago, Bobby Rico said:

No 1 Graptolites for me too.

Thanks for the suggestions. I'll see what other ideas people put forward.

[Fossildude19]

# 1 is a cross section of Crinoid stem.  

 

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[Fossildude19]

Can we get more pictures of the other sides of each item, as well as end views on the bones (both ends, please.) ?

[Max-fossils]

I agree with Tim that crinoid stem cross-section seems to be the best match for #1. Not seeing any bivalve, and the triangles seem a little too triangular for graptolites. 

Plus Charmouth has many crinoids, and I haven't heard of any graptolites being found in the rocks there. 

If the rock was found in Charmouth then there is about a 90% chance that this rock is from the Blue Lias of the early Jurassic, some 195 million years old.

 

#2 does seem to contain some kind of fossil, but I can't tell what. More (and better) pictures will be needed.

 

#3 is definitely some kind of mammal bone. Perhaps a rib piece but I'm not sure. The chances are extremely slim that the bone can be assigned to a specific species, because it is only a fragment.

It's possible that it's modern and not a fossil. To find that out, you can do a flame test: take a lighter/match and softly burn the bone piece.

• If it starts to stink badly, then it means that there is still collagen in the bone, meaning the bone is modern.
• If nothing happens, then it's probably a fossil bone piece. Most likely Pleistocene of age in that case. 

 

Hopefully this helps!

 

Max

[FossilSniper]

37 minutes ago, Fossildude19 said:

# 1 is a cross section of Crinoid stem.  

 

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Just what I thought when I saw #1.

I totally agree.  

[Monica]

Agreed - longitudinal section through a crinoid stem is the best ID for #1.

[thisfossilguy2006]

The clearest picture I could get of #2 is this one:

The ends of #3:

The other side of #3:

The end of #4 (the other end looks exactly the same):

The other side of #4:

I hope this helps!

[Bobby Rico]

Changed my mind too a crinoid stem

[FossilSniper]

Is there a back to #2? Or is it covered by matrix...?
If there is an available back view, it may help with the ID.

[thisfossilguy2006]

6 minutes ago, FossilSniper said:

Is there a back to #2? Or is it covered by matrix...?
If there is an available back view, it may help with the ID.

It is just flint on the back. The only part you can see is shown in the picture.

[FossilSniper]

If there was something on the back, I would have guessed it to be a very weathered bivalve. 

I honestly don't know what #2 is, and I'd wait until someone from the UK can tune in.