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Showing results for tags 'trilobite'.
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From the album: Mahatango Formation
Very rare proetid trilobite from the centerfield fossil zone in Schykill county.-
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- basidechnella
- mahatango formation
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I found this trilobite of the Paralejurus genus and now it has been prepared and I would like to know if is possible to know the species. It was found in Ihandar formation, near Alnif. It's a lower devonian formation. The trilobite measures 7cm. I will tag you @piranha as I think you are my best hope.
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Hi! Information of this Paralejurus provided is Name: Paralejurus spatuliformis Locale: Tafilalt, Jebel oufatene, Morocco (Local information may be incorrect. I think It is P. brongniarti or P. bohemicus, not P. spatuliformis. (I referred to this paper : https://www.researchgate.net/publication/259399182_The_Devonian_styginid_trilobite_Paralejurus_with_new_data_from_Spain_and_Morocco) What do you think about???
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I found some interesting specimens today I would like a second opinion on. Thinking both of these essentially complete bugs are Eomonorachus intermedius, but I'm not certain as they are both exposed ventrally. #1 After some cleaning #2- the second ventral specimen here is preserved hiding underneath an Isotelus pygidium and is very tiny! After some cleaning I think both of these partials are Eomonorachus as well. Almost exposed pygidium Half exposed cephalon showing good eye facet detail. Thanks for any feedback. -Jay
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- decorah formation
- missouri
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Hi! I purchased this trilobite on ebay. Information of this asaphus provided is name: Asaphus kowalewskii Locality: Volkhov river, St. Petersburg region, Russia. Age: Aseri Horizon, Middle Ordovician But i think it's eye is less evolved than kowalewskii So, i think it is Asaphus popovi which is intermediate of cornutus and kowalewskii.(But i don't have accurate information of popovi) what do you think about it???
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From the album: Mississippian fossils
Here is a cute little Comptonaspis pygidium I found on my last hike.-
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- boone county
- mississippian
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Hi, I think this trilobite looks like Phacops smoothops, it's eye facet similar Phacops smoothops eye fomula. But I think the smoothops genal angle is more rounded. So I'm not sure that it is smoothops. Is it smoothops? And, in Phacopidae, if the eye facet is correct, can i specify it, if other features are little different?
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A few days ago I found a nice internal & external mold of a rare Arctinurus sp. This is something I've been looking for over 5 years. I was beginning to give up hope having never even found a pygidium in these rocks. Anyway, I decided it would be good to make some internal/external latex casts and molds and show progress here since I haven't seen much on this topic. I am doing this to observe any differences in the internal/external shells since with this type of preservation the skeletal shells have been dissolved during dolomitic diagenesis. The outer shells could possibly exhibit different features not observable in the internal molds ie. taphonomic or morphological, etc. From making comparisons, I don't think it is A. occidentalis as the anterior border projection is not as pronounced. A. nereus more pustulose and lacks anterior tongue. It more closely resembles A. boltoni but I don't think is reported from this area. So, I guess it is unknown...for now unless @piranha can identify it. First cleaned up with scribe and carefully removed the "tongue" from matrix and superglued in place. This appears to be very easy but actually took many hours. Also not shown is the more complicated prep of the external mold which had to be broken into three pieces and trimmed with a tile saw and then glued together. Set overnight. Aside from the Arctinurus, I also am making latex casts/molds of Dalmanites platycaudatus and a Glyptambon verrucosus cephalon. I don't have a lot of external trilobite molds as they usually break apart and lost in the field. This is also my first attempt at making internal latex molds from externals using hydrocal. I have made latex casts from internals with plaster of Paris but with mixed results as it is softer and more easily broken. For these I want high fidelity examples. Also, I am just winging it. Here, applying a very thin first layer of latex to the external Arctinurus mold. The first 4 or 5 layers need to be very thin and dry between applications. I decided to attach the cephalon /pygidium to the dalmanites with clay and aluminum foil to hold both parts together. to be continued...
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I decided to take a break from house work and the Hadrosaur pubis I'm working on, and prep my first trilobite. It comes from the Wheeler Shale. I'm pretty sure it's an Elrathia kinglii it's missing it's cheeks and some of its head. Here's how it started : And here is how it ended: All in all I'm pretty pleased with how it turned out. I used my Dremel to get close and then my blaster to take the rest of the matrix off. The only hiccup I had was right at the edge of the rock - some of the head blew off and was gone in the blink of an eye. After I was done I was looking at it under my scope, and lo and behold, there was another trilobite I'd totally missed near the cheek! It looks like a little 3mm agnostid trilobite. Luckily I didn't blow it off during prep. I have loads more bones and trilobites to just through, and look forward to showing you guys when I'm done.
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HI! I think this is Reedops pembertoni. Is this right? Pygidium is looks like Reedops, and eye facet is similar Reedops pembertoni. But I'm not sure..
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So I haven't posted for awhile. It is not due to me not going out. But less of a needful thing to post I guess. Anyhow. I figured I would toss some photos in here as I sit and wait, hahaha! Many of these are purchases of some very cool fossils! I hope you enjoy!
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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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Is this Drotops armatus real?
A.Passero posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hey everyone, I just wanted to see what you guys thought of this Drotops. I know they are commonly faked and the lacquer job on this specimen isn't the best. Let me know what you think, I can take more pictures if you want.
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Isotelus trilobite
Georgemckenzie posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hiya everyone someone’s selling a trilobite, but hasn’t got a name or locality, normally I can tell straight away if a trilobite is real but the pictures aren’t the best and it’s like no trilobite I’ve seen, not sure if it’s a replica or a fake made to look like a isotelus.
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Microtrilobites and Other Microfossils of the Pooleville Member
Isotelus2883 posted a topic in Micro-paleontology
Recently I acquired some microfossil matrix from the Bromide Formation, in Oklahoma. They were of the Pooleville and Mountain Lake Members, containing a very diverse fauna, mostly bryozoans and crinoid arm fragments. While searching through the matrix, my main aim was to find some of the small and young trilobites that are often found here. Also, I had bought a trilobite meraspis previously, from the same locality. It is an enrolled meraspis of a Lonchodomas mcgeheei, from the Pooleville member. Views of the Cephalon and pygidium.  Now, here are the finds. A Cyclospira parva, these were very common and found in all samples of the Pooleville Mbr. These are the trilobites of the Lower Pooleville. What may be a partial Lonchodomas mcgeheei pygidium. It is more likely a brachiopod fragment, however. A proetid free cheek, I think. This one is more likely to be a Homotelus bromidensis cheek. I'm not sure for this cheek. Eoceraurus? Here are the trilobites of the Middle Pooleville Member. Calliops armatus partial pygidium.It is rather fragmented, as sadly most of the microfossils in this material are. This may be a trilobite pygidium, but it seems now that I look at it, it may be a brachiopod. Now here is one of my better finds from the matrix. It is a partial trilobite, with the hypostome in place, unusually. Because the dorsal side is not preserved, I don't know what species it is. Here are the fossils of the Upper Pooleville Member. A picture of some of what I found in the sample. A healthy sized proetid free cheek. Two partial cephalons of Frencrinurus capitonis. Though partial, they still show exquisite detail, including several sharp spines. Last, there is this specimen. I am hoping it is a protaspis of some trilobite, but... Yeah. Doesn't look like it. These samples gave a clear picture of the Bromide Formation, and they were rich with fossil fragments, an excellent test for my microscope.
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- brachiopod
- bromide formation
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From the album: Trilobites
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From the album: My trilobites
this is an Isotelus maximus From Mt Orab, Ohio Arnheim Fm. Part of the head shield has been restored. -
UPDATE: Consolidated all my loose preparation threads into one topic. Four hours so far into this big bug, and maybe another two to go. Found at Penn Dixie this past weekend, the visible area measures 6 cm. With the pygidium, it likely measured about 8+ cm. Judging by its size and pustular sculpture, this was likely a long-lived specimen prior to burial. This is how it looked fresh in the field:
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Trilobite Fossil real or fake?
Toast123 posted a topic in Is It Real? How to Recognize Fossil Fabrications
It was collected from Bou Dib Formation near Mrakib. Im wondering if they are authentic or fake. Why is the stone they’re on a different color than the rest of the rock?
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I was hoping to put together a little display of the stages of a trilobite. I needed help being sure of the earlier stages. I have found drawing of the earliest stages but not photos. There have been many circles bits found but they have been bigger then the mini trilobites I've find. As well the ones I've found that are little circles with center parts, can be hard to tell if its just 1 segment of a Peronopsis Interstricta. Had a few photos. See if they maybe right for the early stages. Thanks for any help. #1 #2 #2(closer)
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Hello everyone! I'm typically a Cretaceous collector but spent the last month in Long Beach Island (LBI) New Jersey so I figured while I'm there, I would do some serious collecting. These fossils are glacier deposited Paleozoic specimens. Overall, I probably spent around 30 hours collecting. My biggest surprise was the trilobite imprint (picture 1) however, I was also pleasantly surprised by the number of crystalized/geode specimens. Here my my favorites from the trip.
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From the album: My trilobites
This is a Dalmanites limulurus From the Rochester shale Middleport NY. I bought this one from a friend it is probably my best trilobite.- 1 comment
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- dalmanites
- middle
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The Devonian period is known as "The Age of Fish", but could also be known as "The Age of Brachiopods." In the Early / Lower Devonian, brachiopods reached the height of their diversity towards its end in the Emsian. We see the ancestral groups occurring, lingulids, craniids, orthids, protorthids, pentamerids, rhynchonellids and strophomenids, as well as the later successful groups we have seen before such as atrypids, athyrids and orthotetids, plus the rise of spiriferids, spiriferinids and productids and the beginning of the terebratulids. By the end of the Devonian , several of these groups are extinct or severely reduced in importance and brachiopods never quite recover. Also, the Devonian is the last time we see trilobites with such variation, large sizes and numbers and orthocerids too are much more uncommon after the rise of the goniatites. The massive tabulate coral reefs also disappear after the Devonian. Fascinating period and I hope to share some of its wonders with you. Equally, a lot of this is rather new to me, so I would be very grateful for any assistance, corrections or further information on my specimens. Thank you. The Early Devonian epoch is split into three stages, so let's start with the first of those, the Lochkovian, that began about 419 mya and finished roughly 411 mya. I have been sent a nice selection of brachiopods from the Kalkberg Formation, Helderberg Group by the Mighty @Misha, mostly. But the kind gentleperson also sent me this fascinating little bryozoan hash : It is dominated by fenestellids, which is usually the case in the Devonian, but other orders sill occur. These ones, I think, are Fenestella, but there are so many species in the formation that I wont take a guess as to species : Not sure what this one is ;
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- aguion formation
- area de bonar
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I've stumbled upon several hundreds of these fossils of I believe limestone formation. I really don't know a whole lot about fossils. Just what I've been reading online. Can I get a time period of what y'all think these may be from. Found in East Texas.
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- east texas
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From the album: My trilobites
A stacked Eldredgeops milleri from Sylvania Ohio. This one was prepped with RockQuat as well as normal means which made the rock softer and that's why it looks different.-
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- eldredgeops
- milleri
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