Henri Posted March 9, 2009 Share Posted March 9, 2009 From French Oxfordian : Biggest leg is approx 6 cm. Thanks for your help (I just walked a few kilometers with a 20 kg rock because of this nice pattern) Link to comment Share on other sites More sharing options...
Frank Menser Posted March 9, 2009 Share Posted March 9, 2009 Very strange. At first glance I thought echinoid, but I wonder... Do you have a pic of the whole rock? How big is this thing? Some odd and interesting things come out of France (see pic). Be true to the reality you create. Link to comment Share on other sites More sharing options...
Auspex Posted March 9, 2009 Share Posted March 9, 2009 It looks like an eroded cross section of...something. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
PaleoRon Posted March 9, 2009 Share Posted March 9, 2009 It reminds me of a crinoid holdfast (root). Link to comment Share on other sites More sharing options...
Bill Posted March 9, 2009 Share Posted March 9, 2009 Can you take a photo of the rh side, where the lower rh 'arm' ends at the edge? KOF, Bill. Welcome to the forum, all new members www.ukfossils check it out. Link to comment Share on other sites More sharing options...
Henri Posted March 9, 2009 Author Share Posted March 9, 2009 This is from a big rock, that got broken in two in the sea during a storm, the result is a cut of an unknown (to me) fossil. The rock is really big and there is no other indication on this specific fossil apparent, but I might slice it ; I just risk to destroy it My first thought was for a blastoid, maybe crinoid (but these we find here do not have such perfect symmetry. Since there is no other cut on another side of the rock, I thought is was not a sponge (that is usually found in these rocks, but anyway, they never have such shape) and the porosity we see on two arms make me think of the king of muscle you see in a starfish. One of my problem is that I need to know what it is first if I want to do a single nice cut (to estimate the angle) ; I can't afford to erode the other side. Link to comment Share on other sites More sharing options...
Henri Posted March 13, 2009 Author Share Posted March 13, 2009 I found a new specimen yesterday, just a few meters away from the first, and it is much better in some ways : The hole allows me to presume a perspective : A zoom on the top down (and biggest) leg : A few zooms on the whole and it's texture. Any idea ? I'm now completely lost ! There isn't either an indication on the back, just a few remains of sponge (which there are on just every rock from this layer) and a hardly visible bit with texture like the thier photo. The whole rock of the first photo : Link to comment Share on other sites More sharing options...
grampa dino Posted March 14, 2009 Share Posted March 14, 2009 Call it Spounge Bob Square Pants Have a beer and goe to bed Link to comment Share on other sites More sharing options...
bigjohn835 Posted March 14, 2009 Share Posted March 14, 2009 If it wasn't so small, I'de say it's a borrow of some kind. Maybe insect borrow filled in with dirt? i dunno. With rocks in my head, and fossils in my heart.... Link to comment Share on other sites More sharing options...
Bill Posted March 14, 2009 Share Posted March 14, 2009 Glockeria? type, feeding burrows? See trace fossils Here KOF, Bill. Welcome to the forum, all new members www.ukfossils check it out. Link to comment Share on other sites More sharing options...
Henri Posted March 14, 2009 Author Share Posted March 14, 2009 I don't think it can be just a trace as the textured part and all the outer part of the second find is clearly silicified. So that is a part of the body, and since starfish do not silicify imo that's just stranger. Appart from this, and if you except the fact that starfish are always found flattened, it looks like one, or another similar echinoid. Also, the texture let me think that this inside of the fossil is indeed the external part of the animal. Tomorow I am planning to move tons of rocks at the same place to see if I can find a third. Link to comment Share on other sites More sharing options...
bone digger Posted March 15, 2009 Share Posted March 15, 2009 if thats a feeding burrow I'm spounge bob square pants! Link to comment Share on other sites More sharing options...
MOROPUS Posted March 16, 2009 Share Posted March 16, 2009 Ummm looks familiar to me! Let`s seeeee! Evactinopora sp. Bryozoa from the Carboniferous? Link to comment Share on other sites More sharing options...
Henri Posted March 16, 2009 Author Share Posted March 16, 2009 Ummm looks familiar to me! Let`s seeeee! Evactinopora sp. Bryozoa from the Carboniferous? Indeed, it looks very similar, but do they come so big ? I thought thet were at most a few centimeter wide, while here, the specimen would be 15 cm wide and I found yesterday a small part of a third fossil that would have been around 20 cm ! Link to comment Share on other sites More sharing options...
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