BobWill Posted May 16, 2017 Share Posted May 16, 2017 This slab is a piece of a larger rock with lots of these fossils. You can also see them on the edge of the slab in cross-section. I hesitate to make any guesses on this one, it's like nothing I've seen. The hash marks are mm. From another place on the slab Link to comment Share on other sites More sharing options...
westcoast Posted May 16, 2017 Share Posted May 16, 2017 Wow that is very cool! It looks like a dragon millipede Link to comment Share on other sites More sharing options...
GeschWhat Posted May 17, 2017 Share Posted May 17, 2017 Very interesting...they almost look like crinoid arms. Lori www.areallycrappystory.com/fossils www.facebook.com/fossilpoo Link to comment Share on other sites More sharing options...
BobWill Posted May 17, 2017 Author Share Posted May 17, 2017 Jason Osborne who found this found information on Wikipedia about similar looking annelid worms. Chaetopoda have silia that could account for the appendages but they have a very poor fossil record consisting mostly of jaws and denticles. Does anyone know who studies these for possible confirmation? Link to comment Share on other sites More sharing options...
fossilized6s Posted May 17, 2017 Share Posted May 17, 2017 Interesting. Neat finds. I too am interested on what these little buggers may be. ~Charlie~ "There are those that look at things the way they are, and ask why.....i dream of things that never were, and ask why not?" ~RFK ->Get your Mosasaur print ->How to spot a fake Trilobite ->How to identify a CONCRETION from a DINOSAUR EGG Link to comment Share on other sites More sharing options...
doushantuo Posted May 17, 2017 Share Posted May 17, 2017 looks botanical Link to comment Share on other sites More sharing options...
TqB Posted May 17, 2017 Share Posted May 17, 2017 I think they're spiny brittlestar arms. Something like this but with longer central ossicles: 10 Tarquin Link to comment Share on other sites More sharing options...
bone2stone Posted May 17, 2017 Share Posted May 17, 2017 25 minutes ago, TqB said: I think they're spiny brittlestar arms. Something like this but with longer central ossicles: That was my first impression. Found something similar in the Del Rio material some years back. I would say without hesitation spiny brittle star. Jess B. 3 Link to comment Share on other sites More sharing options...
westcoast Posted May 17, 2017 Share Posted May 17, 2017 They have a chitinous or phosphatic look which would rule out echinoderm but maybe that is just a figment of the photo. Link to comment Share on other sites More sharing options...
TqB Posted May 17, 2017 Share Posted May 17, 2017 8 minutes ago, westcoast said: They have a chitinous or phosphatic look which would rule out echinoderm but maybe that is just a figment of the photo. The first one looks that way but the rest seem OK for calcite, and the structure looks right. Tarquin Link to comment Share on other sites More sharing options...
doushantuo Posted May 17, 2017 Share Posted May 17, 2017 would posting this piece make anybody happy? 1 Link to comment Share on other sites More sharing options...
doushantuo Posted May 17, 2017 Share Posted May 17, 2017 diagenetapho outtake: 1 Link to comment Share on other sites More sharing options...
doushantuo Posted May 17, 2017 Share Posted May 17, 2017 shellbed Link to comment Share on other sites More sharing options...
TqB Posted May 17, 2017 Share Posted May 17, 2017 30 minutes ago, doushantuo said: would posting this piece make anybody happy? Yep, they get longer distally, hadn't realised that. Tarquin Link to comment Share on other sites More sharing options...
doushantuo Posted May 17, 2017 Share Posted May 17, 2017 Given the prevalence of arm remains(provided they are that):like all echinoderms, ophiuroids can autotomize their arms easily . And regenerate them Link to comment Share on other sites More sharing options...
Pemphix Posted May 17, 2017 Share Posted May 17, 2017 Maybe more detailed photos would help - the existing are a little bit blurry... Furthermore location and stratigraphy/strata of the find would help to get a more evidence-based diagnosis... Best regards, Pemphix Link to comment Share on other sites More sharing options...
westcoast Posted May 17, 2017 Share Posted May 17, 2017 Hard to argue against brittle star. 1 Link to comment Share on other sites More sharing options...
TqB Posted May 17, 2017 Share Posted May 17, 2017 Different proportions but the same skeletal elements are shown here: (From: http://lanwebs.lander.edu/faculty/rsfox/invertebrates/ophioderma.html ) 4 Tarquin Link to comment Share on other sites More sharing options...
doushantuo Posted May 17, 2017 Share Posted May 17, 2017 stohr on:Ophiocoma Link to comment Share on other sites More sharing options...
BobWill Posted May 17, 2017 Author Share Posted May 17, 2017 Here's another part of the slab and another close-up. I'll try to get someone to take better pictures next week. Link to comment Share on other sites More sharing options...
doushantuo Posted May 17, 2017 Share Posted May 17, 2017 Bobwill,that is a terrifc plate!!!!!!!!!!!!!!!!!!!!!! taphonomically interesting,the preserved segments are quite long. The strata you found this in,could they be Aptian? Link to comment Share on other sites More sharing options...
DPS Ammonite Posted May 17, 2017 Share Posted May 17, 2017 I think that you probably have pieces of conifers with jointed stems and needles. Plant material can be found in marine units especially if they formed near the shore. See this photo of Late Cretaceous conifer stems from Ohio: Cret conifer.docx Cret conifer.pdf My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
westcoast Posted May 17, 2017 Share Posted May 17, 2017 Holy cr@@. Curiouser amd curioser.I'd give my right arm for that slab...if I was an ophiuroid Link to comment Share on other sites More sharing options...
doushantuo Posted May 17, 2017 Share Posted May 17, 2017 Link to comment Share on other sites More sharing options...
TqB Posted May 17, 2017 Share Posted May 17, 2017 @BobWill As doushantuo says, that's a superb slab! - and is typical of brittlestar mass mortality assemblages (if you're lucky ). Nice closeup too. There should be some central discs in there... 1 Tarquin Link to comment Share on other sites More sharing options...
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