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Showing results for tags 'Echinoderm'.
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Upper ordovician, Italy. Decalcified specimen (it means that you see the mould). Scale bar 5mm. These are 3 different specimens, but I guess of the same species. At first thought they seem a blastoid oral area (never reported blastoids from this formation). But, as 2 of 3 of these specimens are inscribed in a circle, I was thinking about a particular echinoderm stem mould.
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Upper ordovician, n-e Italy. Scale bar 5mm. I'm not sure of crinoid stem (12-13) or ambulacra, Rhombifera stem, Rhombifera stem lumen,...(6-14)
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From the album: C&D Canal Micro Fossils
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Hello, I found these urchins near Jebel Hafeet in Al Ain, United Arab Emirates. I think they come from the eocene, but I am not quite sure. I forgot to add a ruler in the photos, sorry, just know the largest one is just under 4 cm long. I would appreciate any id's. I will also be posting a picture on the fossil preparation section of the forum to see if I can clean them up a bit.
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Fossil hunting trip to Cap Blanc Nez (Cretaceous of France)
ziggycardon posted a topic in Fossil Hunting Trips
Hi everyone, Last week after getting lots of recommendations from people I spend a couple of days at Cap Blanc Nez in France to look for some fossils. And while it wasn't to most bountyfull hunt I did have a lot of fun and I was very pleased with the little finds that I managed to do. We had very nice weather, it was sunny and the temperature was just perfect for fossil hunting, and the cliffs and beach (and landscape overall) were absolutely stunning. The fossils in Cap Blanc Nez date back to the Cretaceous and there are deposits from the Turonian, Cenomanian & Albian. I spent a lot of time searching in the clay deposits which lay on the beach. Besides fossils we also found some washed up marine life: A large jellyfish (Rhizostoma sp.) A washed up Harbor Porpoise (Phocoena phocoena) A washed up Small-spotted catshark (Scyliorhinus canicula) We also payed a little visit to the beach at Wissant although we didn't went there to search for fossils but to visit an old shipwreck
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Found this yesterday in Mason County, Kentucky in the general vicinity of Maysville where Ordovician limestone (Bellevue Formation?) is exposed in the roadcuts. Not an expert but hunted enough to immediately appreciate the rarity of the find. After some preliminary research and a tentative identification (Carneyella ulrichi) I seek an expert review and confirmation/correction. These animals seem to be sufficiently rare that a firm ID shouldn't be left up to an avowed un-expert ... who knows little about the differentiating characteristics of edrioasteroids (or even echinoderms) to do more than "guess by association." @Tidgy's Dadhas posted an Ordovician edrioasteroid for ID and I am hoping the experts on the Forum will offer a view on this animal too (and because I think you all will find it cool!) Thank you in advance for your help. BTW - I am doing virtual cartwheels of joy IRL I was, literally, dancing by the side of the highway! Yes, that was me if you witnessed it!
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Hello to all users! I found this little rock fragment (mudstone from the Tethys ocean floor I think) in a geosite at the Kozani-Grevena Geopark in greece .....I think that there is a fossil on it. Is it or not? And if yes what species is it? (Echinoderm maybe?) Thank you for your time!
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This specimen was found in the Maquoketa Formation (Upper Ordovician) of Minnesota. My best guess is part of an echinoderm (crinoid or cystoid calyx?) but I'm not sure, I've never found anything similar. Any thoughts?
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From the album: Lime Creek Devonian Rockford Iowa
Nortonechinus primus a sea urchin - I suspects the spines is a bit more common than people thought but still rare. More overlooked due to its small size and resembles broken golf tees. -
I am hoping someone on the forum is familiar with Ordovician carpoids. i collected this specimen at a roadcut in Claremont Iowa. it is from the Maquoketa Formation. Any information on what species it might be would be greatly appreciated.
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From the album: C&D Canal Micro Fossils
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I found this fossilized sea biscuit a few years ago in Holden Beach, North Carolina. Curious what species it is, and the approximate age.
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This fossil was found by a friend near Falls of the Ohio, so presumably Middle Devonian but who knows. The hollow elements are straight, with angular cross-sections, and seem to be organized in alternating orientations. Any and all insights appreciated. The coin is an American quarter dollar, about an inch (24.26 mm) in diameter.
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Hey guys， I‘ve dug out some ’fossils‘ that I can't say for sure on a hill of Hubei Province,China. According to the local geological document,there’re exposed strata of middle Devonian and lower Permian around this area. There are some rocks with special patterns on it, which looks like trilobite and shellfish. On another rock, I can see a patch of dots, just like a tentacle of starfish. On this hillside, I also found some strange rocks in the shape of ’flat cylinder‘, with irregular patterns on them. I think it may be the remains of some kind of ancient creature. But I have absolutely no idea about what are them. I'm new in the field of fossil. And his is the first time I sign up The Fossil Forum, so I believe everyone here could teach me a lot. Thank you so much！
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Hi everyone, Sorry if this is a bit of a basic question, but I'm fairly new at this and seem to be finding conflicting information about what I'm looking for. I recently found a number of fossil urchins, and what I think look like will probably turn out to be shells enclosed in sandstone on a beach. Some are pretty clean and only have a small amount of sandstone adhering to them, but others are almost completely buried in the piece of rock with only little bits of the fossil exposed. I was wondering what the best way to remove the rock is without damaging the fossil? I've tried soaking them in just water and cleaning with a tooth brush, but it's still too hard to remove most of it. Some people suggest soaking in vinegar, but other reports seem to say that will damage urchin fossils and most of the information I've come up with relates to removing fossils from limestone rather than sandstone. Thank you in advance for any suggestions
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Asteroidea (starfish) from Ordovician of Pennsylvania
traveltip1 posted a topic in Fossil Hunting Trips
Saturday dawned a bit chilly, but the sun peeped out from lingering clouds to brighten a stellar day of fossil prospecting in the Ordovician bedrock of central Pennsylvania. We strolled along the limestone ground, like beachcombers peering in shallow shore waters, when my relatively newbie friend exclaimed, "That looks like a starfish!" Bingo...Indeed it was an Asteroidea. I'm guessing it's genus Urasterella, and I wonder how rare is this find. The specimen's longest ray is 1.75 inches (4.45 cm). Photos are the rock slab and a closeup of the mostly complete starfish, as found.
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Hello, Last saturday I had a trek in a mountain area in the northen Italy alps and I found this fossil (I'm not actaully 100% sure that it's a fossil, but I don't know what else could it be). It looks like an echinoderm fossil to me, but I'd like to ask your opinion about it. Thanks a lot, have a nice day. Oz
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From the album: Delaware Fossils
So sweet! This is a very rare Cretaceous echinoid (sea urchin), Boletechinus. They are typically no more than a couple mm in diameter. This one is shown next to a pencil eraser. Most of the ones in the Smithsonian's collection come from sand and silt removed for the creation and maintenance of a canal, which exposed fossils well below the surface. This one comes from New Castle County, Delaware. -
For the Columbus Day weekend my girlfriend planned a three-day trip down to Southwestern Virginia as a birthday present to me. The plan was to do a little sightseeing, go on some hikes, enjoy the fall foliage, and, most importantly, collect some fossils. Unfortunately Hurricane Delta had other plans for us. As the weekend approached it looked like the entire weekend would be soaked with rain. We tried to change our reservations, but we were not allowed to postpone. Not knowing what to expect for the weekend, we made our trip. Sunday was to be my big day of fossil collecting. It was also the day that Hurricane Delta was expected to pass through Southwestern Virginia... Lucky for me, luck turned out to be on my side (at least in part). I had an all-day fossil trip planned, but due to the weather, I had to cut the trip in half. After a later start to the day than I had hoped for, we headed towards two sites that I had identified for the day. Both were exposures of the Middle Ordovician Benbolt Formation. A few showers on the drive but for the most part the rain held off while we collected. Our first stop was a large, open road cut. The limestone there is just covered with brachiopods, trilobite pieces and bryozoa I thought the number and orientation of all of the bryozoa in this hash plate were very cool There were a lot of bryozoa at this site. Some small and some large, like these pieces of Mesotrypa sp. and Batostoma sevieri My favorite bryozoan found here though was Ceramoporella sp. This piece of Corynotrypa inflata comes in a close second. This bryozoan is encrusting and was often found on the inside of loose valves of Strophomena sp. I am still trying to identify all of the brachiopods. I believe the left and bottom center ones in the second photo are Rafinesquina champlainensis while the right most one is Multicostella platys Another really interesting fossil was this undetermined sponge One of the unfortunate things about this site is that because it is so exposed, the fossils there weather very quickly. This is most apparent on all of the trilobite pieces. Here are two cephalons and a pygidium of Illaenus fieldi I think this is a right cheek and eye of Eoharpes sp. Here is an additional mystery trilobite piece
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Firstly, a big THANK YOU to @Jeffrey P for hanging out with me for the day! What a knowledgeable, generous, and all around swell guy! If you ever get the opportunity to hunt with Jeff, I highly encourage you to. Jeff and I met at around 8:30 am, and after a quick transfer of his gear to my truck, we were off. We first drove about 45 minutes south to the small town of Wax, to hunt the Upper Mississippian. Specifically to look for blastoids and crinoid calyxes that were known to be found in the area. As it happens, luck was with us! Unfortunately, I didn't take the field pictures that I typically do. Due to the fact that I went swimming with my phone a month or so ago . I am down to using my wife's old phone that I found in the junk drawer (Yes Jeff, it's pink... ). I didn't take it out much to avoid the inevitable drop down the hill side. Especially since it doesn't even have a protective case... Jeff snapped a few pictures. Maybe he will chime in and add them when he is able. For the first few minutes we didn't find much besides crinoid stems, bryozoans, and the deflated or crushed brachiopods common to the site. The main species of brach found in the area doesn't seem to have fared well during the fossilization process. Finding a nice inflated one is a rarity. After a few minutes of adjusting our eyes to spot the small finds located here, we started to pick out the blastoids. Jeff was the first to find one, and gifted it to me as he had already collected a few on his previous trips here. Thanks Jeff for gifting me my first blastoid! Most of the blastoids, while small, were whole and nicely preserved. Here are a few examples. I did happen to find the largest blastoid from the site, and one of the larger ones Jeff had seen from here. Super pumped about this one! Crinoid calyx were also to be found here. We only found a few, but being that these were also a first for me, I was extremely excited to find them! The brachiopods I previously mentioned were abundant, and besides crinoid stems, were the most abundant fossil to be found here. Again, they are almost always deflated. Finding a nice inflated one would be a real treat. These other little Spirifer(?) brachiopods could also be found. Although they were more uncommon that the previous ones. They are very small and delicate. Often crumbling when trying to pick them up. Bivalves could be found here also, but were extremely rare. Jeff was excited to find a couple, but I struck out. Other things that could be found were crinoid stems, the odd solitary rugose coral, and of course the ever present bryozoans. We then headed to a site a few miles down the road in Leitchfield. Stay tuned!
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Hello! This is an apparent “fossil” brittle star, looking much like those that come from the Ordovician of Morocco. However, these particular fossils are very often faked, and I have a strong gut feeling that this particular one has been carved into the matrix. What does everyone else think? For whatever reason that I can’t quantify this piece *looks* like a fake to me, especially due to the fact that it has a very distinctive obvious outline from an air tool, which often is a sign of carving, though that I’ve also often seen that done with genuine Knightia and such. There are a few things that may help indicate that it’s genuine, however, notably that fine details that would be difficult/too labor intensive to carve like “ribbing” on the arms and a “star” (like that on a sand dollar) in the middle of the body are visible. I’ve also already run a cotton swab with acetone over the body, which has not removed any color, so that may help rule out painting. But yes, my gut says it’s a carved forgery (or I guess to be nice you could say “replica”), interested in what everyone else thinks because I’m not 100% sure. Thanks!
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Hello, I believe that this is a fossilized sea urchin, it might not look so, but I do see a resemblance. It appears to be made out of gypsum, or another soft crystal. I was wondering If iy would be wise to dip it in vinigar. Would you be able to see some more details? Or will the wjole thing just dissolve?
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Well, as you maybe can see it is agatized and you can see right down to its larger cells . Is this a part of an echinoderm? Thanks
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Found this in a gravel bar when I was a kid in south St. Louis county. One of my favorites simply due to the complexity, the impression, and the "remnant piece". Not sure how to differentiate pentremite from blastoid other than the narrow suture lines/rays? Thoughts welcomed! Bone
