Ammonite and other fossil ID

[0dinofthenorth]

I found this rock on the Isle of Wight some time ago, and recently preped it.
Do you know which ammointe this is?
And do you know what the other things are?
Thanks.
Thomas.

[Bram]

Hello Thomas,

I don't know much about ammonites, but your fossil really isn't an ammonite, it's a serpulid-like organism, a tube worm. Ammonites have walls between the different chambers of their shell, called septa, which just aren't there on your fossil. The coiling also isn't ammonite like. At least, that's what I think, based on your photos. Maybe you could try to prep the innermost coils a bit further?

The other fossil is a fragment from an irregular echinoid test (could be Echinocorys). These have a very characteristic breaking pattern, zigzag like.

Sincerely,
Bram

[Bewerkt door Bram op 01-02-2011 om 19:08 NL]

[0dinofthenorth]

Thank you very much! I will do some prep now!

[Stijn]

also looks like a serpulid worm tube

and Bram is also correct about the remainder, these are plates of a sea-urchin

Thanks for showing us fossils you have collected yourself

[0dinofthenorth]

Stijn wrote:
also looks like a serpulid worm tube

and Bram is also correct about the remainder, these are plates of a sea-urchin

Thanks for showing us fossils you have collected yourself

Thanks! I looked at some pictures on google, and yes, you are correct.! Thank you all for the ID's!

[0dinofthenorth]

Stijn wrote:

Thanks for showing us fossils you have collected yourself

Lots of the fossils on the ID are ones I have found myself.

[masteroffossiles]

mag ik er even op wijzen dat mijn hemipneustes overblijfselen dezelfde soort zigzag lbreuklijnen heben? ik weet niet of die op wight voorkomen, maar op wight is in ieder geval wel krijt te vinden.

[Bram]

masteroffossiles schreef:
mag ik er even op wijzen dat mijn hemipneustes overblijfselen dezelfde soort zigzag lbreuklijnen heben? ik weet niet of die op wight voorkomen, maar op wight is in ieder geval wel krijt te vinden.

Alle resten van irregulaire egels die ik ken, breken op deze wijze. Dit heeft te maken met de opbouw van het skelet uit losse plaatjes die met elkaar verbonden zijn (maar op de naden zwakker dan dwars in het plaatje, tenminste na de dood en verrotting van het beestje), en met het materiaal zelf. Het is absoluut niet karakteristiek voor Hemipneustes.

Groeten,
Bram

[0dinofthenorth]

So is there any way to identify the echinoid?

[0dinofthenorth]

Sorr, I can't prep it out anymore.