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Showing results for tags 'crinoids'.
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Hello again, I find these crinoid parts (I think) all the time and just want another opinion on what it is. I think number 1 is crinoid pinnules. Number two is the first and only one of these I've found so far here.(Mississippian redwall limestone, Mooney member). It's about 1/4 inch long and I'm guessing perhaps an echinoid spine? I appreciate any input you guys might offer. Thank you Bob
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Another from my fossil dig. S.W.Michigan. 1st this side shown wet is very dull, not sure if it can be improved. 2 other side shown wet. # 3 showing a zooecia. all image taken with my cell phone. last four with a clip on micro lens and dry. The zooecia Bryozoan is 1/8th inch .4 cm
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Hi guys, This is my first posting on the forum, constructive criticism is appreciated. Each year, when the water level in the lake is lowered in late fall, I go there in search of crinoids The first set of photos shows one of my better finds of 2017. This small slab (approximately 9 x 12 inches) had partially eroded from the shore. I was more than pleased to see all crinoids exposed along the weathered edge. Hopefully, there are some nice ones hidden in the center. Last year, while walking up a watershed near the lake, I found a slab of bedded limestone with the calyx pictured below. I decided to downsize the slab. The rock split along the bedding plane to reveal this: There were a couple of similar but smaller slabs nearby. I carried them back to the truck to split at home. I found one more nice calyx embedded in the rock. Pictured below are two more of last year's finds: While walking next to the waterline, I found the fragmented cephalopod pictured below. I was not sure if I wanted to keep it, so I set it aside to examine more closely on my way back. It was only after I looked at it again on my return that I noticed the tooth at the top. This year has not proven to be as fruitful as last year. The first photo pictures a calyx in somewhat rotten matrix. What should I use to stabilize it? One more Does anyone know the bryozoan to which the funnel shaped appendage pictured below belong? Thanks for looking
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I found one of my most interesting and productive fossil sites ever east of Phoenix near Superior, Arizona in late November. The hill contained outcrops of the Devonian Martin Formation and the Mississippian Escabrosa Formation which is roughly the same age as the Redwall Limestone found further north. My first interesting find was several Pachyphyllum corals with very small corallites. The “craters” within the corallites averages just under 2 mm which suggested that these were the P. nevadense species which is not common in the Payson area further to the north. The coral is about mm across. I found a relatively rare Iowaphyllum nisbeti coral that was found by Gladys Nisbet, a botanist from the Phoenix area. The colonial coral is noted for its large corallites with prominent ridges in between. Coral colony is about 9 cm x 8 cm. Here is partially silicified Alveolites coral with very distinctive compressed fish-scale like corallite tops. This piece is about 65 mm across. Here is a nice massive Thamnopora coral 17 cm across. Along with the Alveolites were two types of stromatoporoid sponges. The first is an approximately 15 cm across Amphipora sp. with mound like mamelons. The second stromatoporoid has nice laminations with some vertical pillars. View is about 4 cm across. The most amazing find was several silicified calyxes of a blastoid and at least three species of crinoids found in the Mississippian Escabrosa Limestone. Interior and exterior molds of crinoids and blastoids are occasionally found further to the north in the Paleozoic rocks. Originals or casts are rare in Arizona especially when they are found in a few square meter area. This is the best spot that I have ever found for blastoids and crinoids. The largest and best blastoid was a 31 mm wide Orophocrinus saltensis that I have entered in the current Fossil of the Month contest. It was near maximum size for the species. I have seen no finer blastoid on the internet from Arizona. Cast your vote for the battle of the blastoids. I found at least three species of silicified crinoids. If you know what they are, please let me know. Species 1 is 11 mm across by 14 mm high. Species 2 is a cup that is 17 mm across by 18 mm high. Species 3 has interesting triangular patterns and is about 2 cm across by about 2 cm high. It is in a large rock that I need to break down so that I can carry it away. I planning on going back to the site to look for more goodies.
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- blastoid
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New Mexico - Sacramento Mountains; Mississippian Lake Valley Formation
Kato posted a topic in Fossil Hunting Trips
Mother Nature graced us locally with another temperate day so I had time to squeeze in a long exploration into some hidden canyons that comprise a large subset of the local Mississippian formation known as 'Lake Valley' To get to the canyons of interest I walked through Silurian-Devonian exposures but I did not stop to explore for anything. Here was my first view toward the hidden Lake Valley Formation canyons. You can see deformation from the mud mounding. More to follow.- 17 replies
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Hi all, this fossil hash plate is like a super hard gray mud with cracks. Even using a wood rasp to smooth much off. Mostly a trial or training piece. The shell was broken and in layers, with much covered. I have removed a lot of the cover, can I get an I'd, and is it worth continuing? I also see two Brachiapods, and they still some material stuck on the surface. I do not know of a way to dissolve the matrix, to recover the fossils. ultrasonic does nothing.
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Hi I was wondering if anyone could help me identify some of the key anatomical features of the calyx of this crinoid (Apiocrinites elegans) and any anatomical features of this brachiopod (specimen unknown). I have trawled and searched but am having limited success so thought there might be a fair few people that would be able to lend a helping hand on here! cheers mark
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Hi, I pulled this Crinoids fossil hash plate out of a hill today. I may have seen the mystery in Lake Michigan mud stone, but not raised up or nearly as large. Ideas? Thanks. item is 4 in x 2 5/8th x 7/8th thick. unknown item is 1 in long x 1/2 inch wide.
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Hi, I collected this inland in South West Michigan this week. I see lot's of Crinoidia byrozoans, and what looks like a horn coral. or possibly Evactinopora Bryozoa in limestone. . Please help with I'd, and a better age or time period? Thanks, Bob
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It was raining this morning, so my best site was near Yaxley. The fossils really pop there when wet. In one hour of searching I had 13 fragments of ammonite. I thought it was 14, but when washing them realised one was a miffed snail, who is now in the garden. Mostly the ammonites are pyratised, and preserve sutures and ornamentation well. I found 8 crinoid sections, including round ossicles - I normally only find star shaped ones.
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I am looking for crinoid sites near BG Ky. I am new here. I found my first ever crinoid in landscape gravel and am obsessed! Hope its OK to ask this?
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Found this rock in Highwood, IL, north of Chicago. I used to give this rock not much thought, just assumed I had thin wavy crinoid stem molds. Looking at it closer, I'm not so sure any longer. The stems seem to me to be too neatly lined up, as if the individual stalks had been cemented together when buried. Also, the individual "stems" don't seem to each have their own outer skeleton, unless the white vertical lines contain both of the adjoining crinoid skeletons but just appear as one. What's the likelyhood of that? What do you all think?
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Recently, the opportunity presented itself to me to hunt for crinoids in the Burlington Formation of Des Moines County, Iowa. It was not a scheduled trip, but one that occurred because I in the right place but the wrong time. My mistake gave me a full free day to hunt fossils in Iowa (what a bummer!!) , so I headed out to look for some crinoids. The Burlington is so different than any rock formation that I usually hunt. It is made up of 90% crinoidal remains. It must have been a spectacular ocean floor to see!! I envision it to have been an undersea garden. Fossils other than crinoids do show themselves and I did pick up a few. First some brachiopods: A few corals. At least I think the larger one looks like coral. My doubts come due to its thinness. Trilobites are uncommon in the Burlington. This is the first trilo-bit I have ever found.
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Lots of ordinary things lately at Etobicoke Creek and Joshua Creek. Of course, when I began hunting in April 2019, I couldn't imagine finding such treasures, but there you have it. At the former location, we seem to have fun finding "How many decent-size orthocone nautiloids can fit on one rock," and the number appears to be 10 or 12 in some cases ! We also seem to be able to find snakes when we lift rocks, which can be disconcerting. Recently I noticed some unpromising "wavy surface" rocks, but they had a layer underneath with branching bryozoan fragments. Turns out, there are lots of them, and some are the largest chunks I've ever seen. So today I was out in the rain, getting muddy. I had to leave lots of great rocks...they were reasonably heavy chunks. Tree roots along the creek had split up the shales, pushed some promising rocks through to the forest floor, and dumped lots of slabs onto the creekbank. When I get some of these rocks cleaned up, I hope to post some pictures. Meanwhile, here is a group of recent finds.
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I attended an estate sale last week and the homeowner collected rocks. Sifting through the 50-cent box, I came across this specimen. It's not a complete crinoid, but the size -- and the size variety -- of the stems was particularly enticing. I haven't a clue about where she may have collected it, but the coral, brachiopods and bryozoan fossils in the box look like those I've collected in Michigan.
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Fossil plate with echinoderms, making sure I found the correct tag.
nivek1969 posted a topic in Fossil ID
Hello. I have still been going through boxes of mostly cave mineral from a large estate sale purchase, mostly consisting of cave minerals. The tags that remain are not attached to the pieces and usually scattered among many boxes. This amazing plate I found recently and believe I finally found the label. I just need justification. I haven't found any other plates like this one. It's stunning in person!- 9 replies
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Very much an amateur here. Recently some farmland in east Tulsa was scraped off for a new housing addition. I have found lots of crinoid stems and a few shells and trilobites. But I don’t know what this is that I found today. Can anyone help?
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Hello gang, As promised this is where I will share specimens from my personal collection, my grandfather's collection, and the collection that was donated to the university I work for. The latter is interesting as it is literally boxes of rock and fossils, with no information and my university does not have a geology or paleontology department. I'll be updating it every so often. Enjoy! NOTE: Some of the donated items have old school "labels" on them. If you see initials or such that you recognize, please PM me, as I am doing my best to properly catalog them properly as part of my job!
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While searching for crinoids a few days ago, I found two items which I thought were especially interesting. Can anyone identify them for me? (Mississippian/Tuscumbia Limestone)
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Greetings, all! I am currently writing a thesis involving fossils from the Burlington Limestone near its type section along the Illinois/Iowa border. To demonstrate the diversity of the crinoidal remains from the limestone (over 400 species have been described from the Burlington alone!), I am looking for photographs of articulated crinoids. Do any of you have any that you would like to let me include in my thesis? If possible, I would like high-res images of crinoids identified to genus or species with a scale bar/ruler present in the image as well as the collection/locality info. I can't guarantee that I will use every image posted, but if I use your image, then I will acknowledge you in my acknowledgements and give you credit for the image. Thank you for your time & assistance! -Elasmohunter
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Crinoid Calyx Base from the Glenerie Limestone, N.Y.
Jeffrey P posted a gallery image in Members Gallery
From the album Lower Devonian
Edriocrinus pocilliformis Crinoid Calyx Base Lower Devonian Glenerie Limestone Tristates Group Route 9W Glenerie, N.Y. -
Back in January I bought a new 15 drawer cabinet and have slowly been transferring my collection to it. Going through my old finds, some of which have been boxed and/or bagged away I haven't seen for years has been a pleasure and some new gems have turned up that I had overlooked the first time around. There was this Actinodesma erectum, a pteriomorph bivalve which had broken when it was excavated last summer at Cole Hill.
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Jurassic Megaraft Crinoid (Seirocrinus) Colonies, Posidonia Shale, Germany
Oxytropidoceras posted a topic in Fossil News
Hunter, A.W., Mitchell, E.G., Casenove, D. and Mayers, C., 2019. Reconstructing the ecology of a Jurassic pseudoplanktonic megaraft colony. bioRxiv, p.566844. https://www.biorxiv.org/content/10.1101/566844v1.abstract https://www.biorxiv.org/content/biorxiv/early/2019/03/04/566844.full.pdf Hess, H. 2011, Treatise Online, no. 16, Part T, Revised, Volume 1, Chapter 19: Paleoecology of pelagic crinoids https://www.researchgate.net/publication/272640982_Treatise_Online_no_16_Part_T_Revised_Volume_1_Chapter_19_Paleoecology_of_pelagic_crinoids Other papers are: Röhl, H.J., Schmid-Röhl, A., Oschmann, W., Frimmel, A. and Schwark, L., 2001. The Posidonia Shale (Lower Toarcian) of SW-Germany: an oxygen-depleted ecosystem controlled by sea level and palaeoclimate. Palaeogeography, Palaeoclimatology, Palaeoecology, 165(1-2), pp.27-52. https://www.researchgate.net/publication/229329097_Erratum_to_The_Posidonia_Shale_Lower_Toarcian_of_SW-Germany_an_oxygen-depleted_ecosystem_controlled_by_sea_level_and_palaeoclimate https://www.researchgate.net/profile/Annette_Schmid-Roehl Schmid-Röhl, A., Röhl, H.J., Oschmann, W., Frimmel, A. and Schwark, L., 2002. Palaeoenvironmental reconstruction of Lower Toarcian epicontinental black shales (Posidonia Shale, SW Germany): global versus regional control. Geobios, 35(1), pp.13-20. https://www.researchgate.net/publication/251729450_Palaeoenvironmental_reconstruction_of_Lower_Toarcian_epicontinental_black_shales_Posidonia_Shale_SW_Germany_Global_versus_regional_control https://www.researchgate.net/profile/Annette_Schmid-Roehl Yours, Paul H.-
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Sorry I haven’t been around the forum as much for a couple months now but I’m starting to get some more free time recently. Here’s a quick trip @Earth Chemistry and I did a little bit ago. Let’s start out with what stratigraphy we’re looking at here. I’ve been visiting multiple locations of what is locally known as the Gardison Limestone. Source: http://utahgeology.com/utah-stratigraphic-columns/?var=strat_27 It is from the early Mississippian or Early Carboniferous for our international members.
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