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Urchin spine


fifbrindacier

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fifbrindacier

Hi, several months ago i found a very tiny and rather flat urchin in a block which had two spines. I managed to disengage the urchin, but it is really too tiny for my camera. The spines are bigger and i wondered to what family of urchin they belong (maybe a cidarid ?)

I also join the photos of the urchin that was with them (although i don't know if that would help).

@Coco @caterpillar ?

The smallest spine :

IMG_6267.thumb.JPG.992ed7b7f96b65dfd9365afdbe5b71d8.JPG

 

The bigger :

IMG_6269.thumb.JPG.1421c843f5bc3d85e4e6f5a61522c74b.JPG

IMG_6271.thumb.JPG.1f06ab0ebbfde70d782d3d6e7e611827.JPG

 

IMG_6275.thumb.JPG.9adcc9add3bf381f8a25e71c1aa970e3.JPGIMG_6273.thumb.JPG.d8f37220da059228ec5e547924ac1995.JPGIMG_6285.thumb.JPG.9f1ac8f2a57cf958b9ab5fff8806ab7a.JPGIMG_6286.thumb.JPG.7c48ff35bf908d948c41ef1725c40705.JPG

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fifbrindacier

I precise i found it in an Aptian strate.

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caterpillar

Yes, Cidarid spine. But the echinid is hard to determine with these pics. A regular for sure. Try to put it in diluted vinegar

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fifbrindacier
48 minutes ago, caterpillar said:

Yes, Cidarid spine. But the echinid is hard to determine with these pics. A regular for sure. Try to put it in diluted vinegar

Thanks Dominique. We were five persons to find spine urchins like these and one person found a cm wide fragment. So there are other urchins in that site.

 

I put it in diluted vinegar and will try to provide the best pics i can.

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fifbrindacier

I've put the urchin out of diluted vinegar hours ago but I couldn't take pics with my camera. The zoom doesn't want to move and when I try to switch it off there is that message : Erreur objectif. Fermeture automatique. Redémarrer appareil photo (Error lens. Automatic closing. Restart camera.).

Ggrr ! 

I don't know why, but it reminds me when the Tax Office sent me a registered letter with acknowledgment of receipt to threaten me with an attachment of earning and a bailiff seizure of my furnitures because I owed them the great debt of twenty cents.

 

So, I took pics with my phone and hope they'll be god enough. I don't hope a species identification, I just have the feeling it is also a Cidarid and like your opinion on that. 

IMG_20190726_141541.thumb.jpg.0057d3802a0f03b05a3ececbf46337e1.jpgIMG_20190726_141611.thumb.jpg.33d50497e64a7bd1e12b1eeaf561d7b6.jpgIMG_20190726_141641.thumb.jpg.752360e7aab923ef64eebae661cb9f81.jpgIMG_20190726_141655.thumb.jpg.e2dfa930c2aeb83b4cf3c22494f31254.jpgIMG_20190726_141743.thumb.jpg.6fc6c7d6cbd385fd575102dda1fe44b2.jpg

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Hi,

 

Oh Sophie ! You only have "the belt" (:default_rofl:) of the urchin ? The periprocte and the peristoma seem to have disappeared... (anus and mouth). I can’t help any more. The only important clue I can see is that this sea urchin are the pore pairs.
 
Coco
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fifbrindacier
2 hours ago, Coco said:

Hi,

 

Oh Sophie ! You only have "the belt" (:default_rofl:) of the urchin ? The periprocte and the peristoma seem to have disappeared... (anus and mouth).

Oh, i hope it lost them after its death or so, it must haved had a very unpractical life.

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