Can you please help me identify these beach (possible) fossils?

[Nat006]

I found these on the beach in The Netherlands. I would appreciate if someone would tell me if they are fossils or just rocks and what they are, if fossils. 

 

In the case of the sand dollars, I don't know if they are skeletons or fossils. They are hard and I can't break them.

Thank you so much!

[Nat006]

Clearer set of pictures of the first piece;

[caterpillar]

Can you show the other face of the echinoids?

[Nat006]

7 minutes ago, caterpillar said:

Can you show the other face of the echinoids?

Sure, here they are

[Al Dente]

The echinoids look like Echinocyamus pusillus, probably modern. The first object looks like a bryozoan coated rock.

 

[jpc]

2 minutes ago, Al Dente said:

The first object looks like a bryozoan coated rock.

 

Likely modern as per my reading.

[Nat006]

Just now, Al Dente said:

The echinoids look like Echinocyamus pusillus, probably modern. The first object looks like a bryozoan coated rock.

 

Thank you so much! Can you please tell me why the Echinocyamus are modern and not fossils? What is the defining factor? 

 

Also, I was thinking this one looks a tiny bit like a turtle scute, am I just being silly? I just thought so because it's so flat on one side.

 

Thanks again.

[Mahnmut]

Hi Nat 006,

I do at least think ist easy to differentiate between fossil and recent sea urchin tests/shells:

the modern ones are very fragile, fossil ones can be fragile, but are also often replaced or filled solidly.

Nice bryozoa anyway!

Best Regards,

J

[jpc]

the bone could also be a fragment of somehthing bigger.  Many turtle shells have distinctive texture... can you show it to us not wet?  

[Nat006]

18 minutes ago, jpc said:

the bone could also be a fragment of somehthing bigger.  Many turtle shells have distinctive texture... can you show it to us not wet?  

Yes, sure

[jpc]

ummm.... the other surface.  : )

This side is the inside of the bone, we need to see the texture on the flat side.

 

[Nat006]

Also, does anyone know about this? I originally thought if a shell is in a rock, it's most likely a fossil but the shells here definitely don't look fossilized. So maybe it's just concrete or something.  But I want to be sure anyway so I'm asking here is there a possibility this is a fossil?

[Nat006]

1 minute ago, jpc said:

ummm.... the other surface.  : )

This side is the inside of the bone, we need to see the texture on the flat side.

 

Haha, so sorry! 

[jpc]

Interesting texture.  It does not ring loudly of turtle to me, but let's see what folks might say who are more familiar with these deposits there in NL.  

 

Keep in mind that I am most familiar with Jurassic to Eocene turtles. 

[Fin Lover]

The texture doesn't make me think turtle, either.

[Brandy Cole]

I agree it doesn't scream turtle to me.  But I mostly see Texas Pleistocene material.

 

I would probably ID it as a small bone fragment.

[fifbrindacier]

On 3/18/2023 at 7:30 PM, Nat006 said:

Also, does anyone know about this? I originally thought if a shell is in a rock, it's most likely a fossil but the shells here definitely don't look fossilized. So maybe it's just concrete or something.  But I want to be sure anyway so I'm asking here is there a possibility this is a fossil?

That's a fossilised shell.

[DutchFossilSeeker]

In what part of the Netherlands was this found? Its not uncommon to find pleistocene material on the more southern areas (like around The hague or Rotterdam), especially when sand is dredged up from the deep to fortify the coast. 
 

the first item is a piece of flint covered in modern bryozoa.

[Nat006]

On 3/26/2023 at 6:29 AM, DutchFossilSeeker said:

In what part of the Netherlands was this found? Its not uncommon to find pleistocene material on the more southern areas (like around The hague or Rotterdam), especially when sand is dredged up from the deep to fortify the coast. 
 

the first item is a piece of flint covered in modern bryozoa.

 they were found on Cadzand beach