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Showing results for tags 'Crinoid'.
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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From the album: Mississippian fossils
A nice crinoid I found on my creek walk today. I will need to do some more cleaning to determine a proper ID.- 1 comment
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- boone county
- missouri
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Hello to all. Found this sample few years ago. The age of it is the Kasimovian stage of the Carboniferous period (307 Ma). Have a nice evening 1.mp4 6.mp4 7.mp4 8.mp4
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- 5
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- carboniferous
- crinoid
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From the album: Mississippian fossils
A good view of basal plates of a Phanocrinus crinoid.- 1 comment
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- 3
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- union county
- illinois
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From the album: Mississippian fossils
A nice little Phanocrinus crinoid calyx.-
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- union county
- illinois
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From the album: Mahatango Formation
Nis Hollow member, Schykill county -
From the album: Mahatango Formation
Undetermined crinoid, niss hollow member. -
From the album: Mahatango Formation
Undet. Crinoidea-
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- mahatango formation
- crinoid
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Sea urchins, sand dollars and brachiopods, Aireys Inlet, Victoria, Australia
Oli_fossil posted a topic in Fossil ID
Hi all, See attached - most of these are 5-10mm in size (cm/mm ruler in background). Found at/near base of sandstone cliffs near Aireys Inlet, Victoria, Australia. I have previously found Lovenia fossils in the area (and found a couple more today), but these are much smaller and flatter - more like sand dollars? IDs appreciated, and also suggestions re further cleaning - I just soaked them in water (~30min) and tried to remove loose material, but haven't done anything further. Would it be worth soaking/cleaning them further to try to remove more matrix? Also, do you think the small spines/tripods in 2a/2b/23c are the original spines of the sea urchin? I think 4 is probably the top lid of a similar brachiopod to 3/3a - does that seem reasonable? Cheers & thanks in advance, Oli- 16 replies
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- 2
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- sea urchin
- echinoid
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Hello all! I was scrolling through my home state’s fossil page when I came across this post from someone claiming they had a “special spot“ in western Kentucky where they found all of these fossils. Someone in the comments inquired about the ID, and he told them they are fossilized jellyfish. Obviously, these are not fossilized jellyfish. My first thought was geodized crinoid calyces, but then I looked closer and counted the plates- six rather than five, which is not what I’m used to for a typical calyx. Any thoughts?
- 14 replies
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- 3
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- kentucky
- ordovician
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The New Rarest Shark Tooth in My Collection: Lower Glen Rose
Mikrogeophagus posted a topic in Fossil Hunting Trips
Today I took a spur of the moment trip up to the Canyon Lake area for some hunting in the lower Glen Rose. My first venture into the region took place last year and was only a limited success in that I scored a measly two micro echinoids. The plan for today was to try some new spots in hopes of striking the perfect layer of echinoid diversity. The first site was a complete bust, but the second immediately showed promise when I noticed the ground was littered with broken bits of thin echinoid test. Because I had arrived so close after the recent rains, the ground was still a sticky slop of Glen Rose mud. The combination of running along the slopes and frequent crouching set my calves on fire, but the scent of urchins kept me on the chase. Very quickly I was lucky to encounter some really nice crab claws from Pagurus banderensis. A couple had both pincers still preserved. Surprisingly common was also the tiny crushing dentition of Pycnodont fish. They aren't all that interesting to look at, but the simple fact that vertebrate material was present gave me daydreams of finding an elusive Glen Rose shark tooth. I tried to shake away such a hopeless goal, but it continued to sit in my mind. After a couple hours, I found an Amiid fish tooth and some star-shaped Isocrinus annulatus columns. For whatever reason, I could not find a single echinoid spine, let alone a complete test. I was searching the ground very closely, so my thinking was it may be more to do with the site than myself. As I was doing the usual close inspection, I snuck up on a black figure nestled securely in a pile of Glen Rose matrix. It took a moment to register that I wasn't looking at just another chunk of black bug. I safely stashed the two pieces of Polyacrodus. Sadly, the third fragment was nowhere to be seen despite my best efforts. After finding some more crab claws it was time to head out. On the trek to the car, I spotted a Trigonia whitneyi? clam, maybe from the upper Glen Rose. I'm not sure what species this is. I see Polyacrodus aff. parvidens is described form the Texas Albian up north. Other than that, there doesn't seem to be much info. I've seen some discussion on Polyacrodus brevicostata being a possibility as well. Top L to R: Trigonia whitneyi? and Pagurus banderensis Bottom L to R: Amiid tooth, Pycnodont teeth, Isocrinus annulatus It seems my streak of urchin unluckiness has continued, but I'll take a Polyacrodus any day of the week!- 6 replies
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- lower glen rose
- polyacrodus
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Does anyone know what fossil this is and if it is a fossil? Some people say it’s a crinoid fossil, Native American bead, or just a rock.
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Apographiocrinus sp., Finis Shale, Graham Fm
Mikrogeophagus posted a gallery image in Member Collections
From the album: Virgilian Series
Apographiocrinus sp., Jacksboro Finis Shale, Graham Fm Feb, 2023 -
Delocrinus subhemisphericus, Winchell Limestone
Mikrogeophagus posted a gallery image in Member Collections
From the album: Missourian Series
Delocrinus subhemisphericus, North TX Winchell Limestone Feb, 2023-
- missourian
- winchell
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From the album: Missourian Series
Ulocrinus convexus, North TX Placid Shale Feb, 2023-
- missourian
- placid
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Delocrinus subhemisphericus, Placid Shale
Mikrogeophagus posted a gallery image in Member Collections
From the album: Missourian Series
Delocrinus subhemisphericus, North TX Placid Shale Feb, 2023-
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- delocrinus
- missourian
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From the album: Missourian Series
Ulocrinus convexus, North TX Palo Pinto Fm Feb, 2023-
- ulocrinus
- missourian
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Paragassizocrinus tarri, Mineral Wells Fm
Mikrogeophagus posted a gallery image in Member Collections
From the album: Desmoinesian Series
Paragassizocrinus tarri., North TX Mineral Wells Fm Feb, 2023 A stemless floating crinoid.-
- crinoid
- desmoinesian
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I found the fossil attached a while ago in Tyrol, Austria. More preciselly, in the valley of Brandenberg in which many beautiful fossils can be found (mainly gastropods and ammonits). I am having a hard time to identify the fossil below and I am also not so experienced. Could i be a crown of a crinoid? The size of the fossil is around 8cm. Unfortunately, the stone is very porous and it almost falls apart.
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- identification
- jurasic
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I haven't posted in quite a while, so I thought I would post pics of some of my 2023 prep jobs. I have done a lot more than these but these are the only ones I took a before pic. Zacanthoides idahoensis Cambrian Spence Shale Richmond, Utah Pseudogygites latimarginatus Ordovician Lindsay Formation Bowmanville, Ontario, Canada Ceraurus plattinensis Ordovician Bobcaygeon Fm. Brechin, Ontario, Canada Archimedes wortheni Mississippian Warsaw Fm. Fenton, Missouri Platycrinites bozemanensis Missisippian Lodgepole Fm. Bozeman, Montana Aphelecrinus okawensis Mississippian Bangor Fm. Lacon, Alabama Glyptocystites multiporus Ordovician Bobcaygeon Fm. Brechin, Ontario, Canada Eldredgeops crassituberculata Devonian Silica Shale Paulding, Ohio This is one I really wish I had a before prep pic. The specimen underneath was a complete surprise.
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- 28
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- preparation
- trilobite
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Crows Feet? I’ve seen these in limestones but not in dolostones. Plenty of bits and pieces. I think Favosites and molds of crinoid columinals. More crinoid molds and both brachiopod molds and bits and pieces. Very very crystalized. But fun challenge.
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- racine dolomite
- racine wisconsin
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From the album: Mississippian fossils
A beautiful Dorycrinus crinoid calyx I found while out setting fish lines. This specimen will be very nice after preparation.-
- 4
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- burlington formation
- missouri
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This mold seems large to be from a Crinoid stem. It’s almost 1 cm in diameter. But I can see faint horizontal lines that the camera is not picking up. Any help or guidance appreciated.
- 28 replies
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- racine formation
- dolostone
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What is the difference between crinoid and blastoid columnals. I know the difference between the calyx of a crinoid and the theca of a blastoid. I have a site I visit that has a mash up of both calyxes and thecas, but not with attached columnals. It is a Mississippian site, Warsaw formation.
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From the album: Mahantango Formation
Megistocrinus depressus (left) and an unidentified calyx Perry County, Pennsylvania