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Post by Joe Botting on Feb 2, 2006 11:06:55 GMT -5
Courtesy of Bertrand Lefébvre (carpoid specialist, Dijon), based on a quick sketch and then comparing it with some of the specimens in numerous drawers in his office.
For those who need a reminder, mitrates are controversial echinoderms (or echinoderm-like creatures, if you ask some people - I'm staying out of it! ;-). We've got one species scattered through the entire Llanfawr Mudstone, and quite abundant at the holothurian locality.
The verdict? It's probably Anatifopsis sp., which is a relatively widespread genus. It's even known from Wales, albeit in the Arenig (about 10 million years older than ours, very roughly).
Thanks, Bertrand!
Joe
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Post by kderstle on Sept 12, 2006 22:35:45 GMT -5
Any photo's or drawings of this fossil? Do any of them have the aulacophore preserved?
- Kraig
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Post by Joe Botting on Sept 13, 2006 2:24:12 GMT -5
Hi Kraig, Welcome! There's a drawing at: www.asoldasthehills.org/Echinoderms.htmlbut it's a reconstruction rather than camera lucida. Although we now have a fair few near-articulated specimens, they are almost always in some state of collapse, and being able to distinguish the plates easily, let alone their arrangement, is not easy. However, the aulacophore is there (at least partially) in a few specimens. It's not in good enough condition to see any potential cover plate arrangements, I'm afraid. Despite the collapse of the architecture and the mouldic preservation, there is spectacular preservation of the stereom in many specimens of isolated plates. What is it you're interested in? Joe |
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Post by kderstle on Sept 16, 2006 21:32:11 GMT -5
I'm studying a Shropshire cornute and planning to submit the description by the end of the semester. It is a close relative of Galliaecystis spp. and I was impressed with the general similarity to some of the cornutes that you've illustrated. I was curious about these specimens and while reading your info, got curious about the mitrate. Any chance that I could compare your cornute specimens against the Shropshire material?
- Kraig
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Post by Joe Botting on Sept 17, 2006 5:18:27 GMT -5
Hi Kraig, You've got one from Shropshire? Well, well, well... Shelve, presumably? May I ask what age? And how you got hold of it? I thought you worked mostly on US dinosaurs..!  The problem we have is that the specimens are now in Dijon with Bertrand. We're not planning to submit before you, in that we hope to go out collecting again next May (the locality is very hard to get at during the winter). The site is fairly rich although it's in locally-derived drift, and there appear to be several species present. The only way for you to see the specimens before you submit is, I suspect, if you were to delay submission, which you probably don't want to. That way we could at least refer to each others' descriptions. Of course, there is nothing to stop you citing ours as being under investigation, but obviously we don't want to let you describe ours for us... what we can do is answer questions about our material, if there's anything in particular you need to know? For example, we should be able to work out whether we've actually got the same species. Contact me at joe AT asoldasthehills.org if you want to follow this up privately. A picture of the best-preserved of the cornutes (5 mm wide) is:  Is this the one you're particularly interested in? By the way, we agree that they're close to Galliaecystis - not that you need the confirmation, I'm sure! Cheers, Joe |
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Post by kderstle on Sept 25, 2006 18:27:17 GMT -5
Thanks for the info and the photo. I've replyed to your email.
- Kraig
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Post by Joe Botting on Jan 18, 2009 6:55:01 GMT -5
Hi Kraig,
How's the paper going? Bertrand has started working on ours, and it's becoming quite an extensive fauna.
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Post by Joe Botting on Aug 29, 2009 4:31:35 GMT -5
Hi Kraig,
Just spotted you've been popping back into the forum a bit recently, and wondered whether you've got that paper submitted yet? I'm sure I'd have seen it if it was published, but you never know.
We've been slowly accumulating more Builth carpoid specimens, and Bertrand now has a good hundred or so (!) to go on, but he's been a bit delayed in studying them due to other commitments.
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Post by kderstle on Nov 1, 2009 13:35:44 GMT -5
Hi Joe - I'm well along with the Shelve/Meadowtown Galliaecystis. Project is completed and largely written, but not yet submitted. We're working on illustrations at the moment. One hundred specimens of your Builth carpoids, that's amazing!
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solius
I know what fossils are!
Posts: 44
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Post by solius on Nov 6, 2009 11:49:07 GMT -5
Weird Ord echinoderms??? OOOOOOooooooh.
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Post by hallucygenia on Nov 7, 2009 13:28:49 GMT -5
Oh yes! (Just be careful who you say that to - there is a strongly held opinion that they're more closely related to vertebrates. I once used the phrase "carpoids and other echinoderms" to the man who thinks they're not echinoderms. I still have the scars!) Joe doesn't seem to have any Builth carpoid photos on flickr, but here's one that we saw in Morocco: www.flickr.com/photos/77849983@N00/3401958273/in/set-72157616823843138/ |
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solius
I know what fossils are!
Posts: 44
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Post by solius on Nov 12, 2009 7:34:10 GMT -5
Shucks!!! There goes my hypothesis as to why I find the lophophorates sooo attractive.
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Post by Joe Botting on Nov 13, 2009 13:36:37 GMT -5
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