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Showing results for tags 'pygidium'.
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This trilobite tail I found today is confusing me, and I can't identify it. Perhaps someone here might? I didn't notice the trilobite pygidium at first, but glimpsed it after getting a better angle in the daylight. The pygidium is exposed sunkin about 4 inches deep within a block of chert. I oddly found one other example yesterday as well, but it isn't near as nice as the specimen I found today for comparison. The second example is also ventral side of the pygidium exposed. These Mississippian pygidia are not like others I have collected, even from Burlington Formation chert. I do not believe Exochops is a good match here. Perhaps I am wrong, but I couldn't find anything like it in my resources. These pygidia are covered in ornamentation/ pustules, and the flange almost resembles like what one would see in Ameura or Sevillia. I am uncertain what the best fit would be.
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- burlington formation
- henry county
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From the album: Miscellaneous
Krasnoufimsk, Sverdlovsk Oblast. Kungurian of Permian. A gift from the Museum of Karst and Speleology in Kungur. -
From the album: Kaliningrad Oblast
Silurian. Found near Svetlogorsk. -
From the album: Fossildude's Middle Devonian Fossils
Possible Bellacartwrightia pygidium. North Evans, NY. Windom Shale.© © 2013 Tim Jones
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Hi, I got this Trilobite pygidium from my neighbour. He found it on one of his vacations in South America on a hike in 1999. It is from the south of Peru but from where excactly, he does'nt remember. He remembers walking to Machu Picchu but could'nt remember if he had found it there. I did not see that the picture was that bad. I will try to make a better one tommorow. Can anybody help me with the ID and or possible location? Greetings Walter
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From the album: Lower Carboniferous Ireland
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- Bollandia globiceps
- dublin ireland
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From the album: Lower Carboniferous Ireland
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- Bollandia globiceps trilobite pygidium
- dublin ireland
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This was found in the Carboniferous limestone of the Malahide Formation , east coast Dublin Ireland, looks different to my other pygidiums which are all Phillipsia.
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- dublin ireland
- lower carboniferous limestone
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From the album: Lower Carboniferous Ireland
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- dublin ireland
- lower carboniferous limestone
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Hi everyone! I visited an exposure of the Milwaukee formation within Milwaukee city, Wisconsin this weekend. Found lots of brachiopods, corals and bryozoans, and brought some rocks home. Then today I decided to smack some of them with a hammer - and this trilobite pygidium emerged out of nowhere. I don’t know a lot about inverts - can anyone help with the ID please, if it’s identifiable at all? I’m pretty sure it is from the Lindwurm member of the Milwaukee formation (Givetian - Middle Devonian). Thanks!
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Found this today after work, believe it is an isotelus pygidium. Is that correct?
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Each square is one centimeter. What is this mould of? Thank you!
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From the album: Fossildude's Silurian New York Finds.
Calymene niagarensis pygidium. Rochester Shale, Lewiston Member. Lockport, NY.© 2023 T. Jones
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- calymene niagarensis
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Back again in need of a Devonian diagnosis. A Devonagnosis. Whose butt is this? First thought was Kettneraspis except that it has those three vertical spines lined up at the anterior edge, broken off in the mold when the rock was opened. Also the multitude of tiny spines around the edge appear to be intact and much shorter. It’s maybe 5mm across, not very big. Needmore formation of West Virginia, middle Devonian. First photos are interior mold, last few are exterior mold. As always, thanks for you times.
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- needmore formation
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The Presence or Absence of Lateral Denticulations on the Pygidium of Acastella tiro
Isotelus2883 posted a topic in Fossil ID
In connection to a school project, I asked my dad if he could buy me this representative trilobite of Ukraine, as I wrote a little bit on the trilobites of the Silurian-Devonian boundary there. The problem is that the label is probably wrong as Acastella is not found in the Lower Silurian, and searches of the locality in which the trilobite was supposedly found had no results. I think it is much more likely that the trilobite was found in the Borschiv Horizon, around Podolia, as the shell preservation and trilobite looks similar. The question I have though, is: does Acastella tiro have denticulations on its pygidium, or is that A. heberti? A paper on the trilobites of the Iberian Chains says that A. tiro has denticulations on its pygidium, yet a paper on the trilobites of Arctic North America says that is distinct to A. heberti. I would greatly appreciate any information. 1. Acastella tiro and A. heberti form the Iberian Chain 2. From North America 3. My own little specimen, which I am unsure of what species it is.
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Trilobite pygidium broken before fossilization?
Raistlin posted a topic in General Fossil Discussion
So while prepping this pygidium I started to notice stuff was missing. More so than the normal. This pygidium seems to have split in half. Could it possibly be predator leftovers or something similar? Adding prep pics to see what I was seeing and show I did not cause yhe damage.
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Unknown possible pygidium. Joliet formation. @piranha
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Hello again everyone, sorry for the delay between Part 1 and Part 2. I went through some more material from DSR and I've made some pretty awesome finds. I might have enough specimens for a Part 3, but I still have to go through more material. The same goes for the Penn Dixie part, I've barely touched it yet and still need to photograph the finds. To kick Part 2 off, here is my best DSR find yet! A nearly complete (unfortunately disarticulated) Echinocaris punctata!!! My kitten Indy for scale The Echinocaris has one of the spikes on its tail visible, and both valves are present. Another Phyllocarid, a Rhinocaris columbina! The reverse side shows another half, possibly from the same Rhinocaris? This cute little cephalon is one of my first Eldredgeops finds at DSR. Here's the Dipleura heads I've found so far (excluding the one from the previous trip report), This one is one of the largest I've found yet, it's 3 inches wide! This cephalon was a real heartbreaker. The other half of it was stuck under 1 1/2 - 2 feet of overburden This one is upside down I think this is a juvenile Dipleura cephalon, but I'm not 100% sure. I'll have to clean it up to be sure. Now onto the misc finds This is one of the largest Goniatites(?) I've found here, it popped out of the matrix on the way home but it should be able to be glued back. I feel like the cone shaped fossil in the center of the piece might be a Hyolith, but I don't know for sure. A lone crinoid stem, it'd be cool to see what it looks like when prepped. Not sure what kind of fossil this is, possibly a devonian putty scraper? Here's some Brachs and Bivalves from DSR, I'm not 100% sure on the ID's so if I'm wrong please correct me on it. Goniophora chemungensis? Paraspirifer acuminatus? Mucrospirifer consobrinus? Big jumble of brachs (maybe some Bivalves too?), cool golden sheen on it. I don't think it's pyritization. Assorted brachs Devonochetes coronatus? This is on the back of the possible Hyolith piece shown above. M. mucronatus? Large brachiopod and bivalve hash plate Probably the biggest Bivalve I've ever seen, let alone found. ID unknown Orthonota undulata
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From the album: Fossildude's Middle Devonian Fossils
Possibly Pseudodechenella rowii?? 18 Mile Creek, Near Hamburg, NY. Middle Devonian. Hamilton Group© © 2011 Tim Jones
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From the album: Fossildude's Middle Devonian Fossils
Pygidium of Greenops sp. Middle Devonian, Windom Shale Hamilton Group, Near Buffalo, NY.© ©2011 Tim Jones
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Used a sewing needle and acid (water and 45% vinegar mix) to prep this due to size. Never used to technique before and finished it off with Paleobond. Did it come out ok? I had no choice but to Paleobond as I loosened a part of the cheek spike while prepping. The pygidium is 8mm long and 10 mm wide. Mississippian Golconda formation.
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Hi everyone, I am very new to fossil hunting and am hoping to find some trilobites. I am located in along Lake Huron in Ontario, Canada on a rock formation from the middle Devonian period. I broke open a rock on my second trip and found this but I am not positive what it is. I think it could be a fossilized pygidium from a trilobite but i am really just guessing. I have attached to photos of the fossil, if anybody could help me identify it or steer me in the right direction that would be greatly appreciated. Thanks.
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- middle devonian
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At first I thought this was the Trochurus pygidium. I've been looking for for a few years now, but since it appears to have 6 spines instead of 4, not so sure. Maybe Ceratocephala? Sugar Run. @piranha
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Moroccan Trilobite Scabriscutellum developmentally abnormal pygidium
Biotalker posted a topic in General Fossil Discussion
Something caught my eye at the cheap table of trilobites at a Moroccan vender at a past fossil show. There were several Scabriscutellum of mediocre quality but I bought two. You can see them here. I am pretty certain these fossils are legit. One seems to have to have a clear cleft in the pygidium. There is even a small overlap of one pygidial "lobe" over the other. This is the first time I have seen such a "dramatic" mutation. I would guess that it is far more likely to be a developmental issue rather then a genetic mutation. The cleft trilobite obviously survived to its current size just fine (both approx. 4cm or 1.5 inches long). What do you think? Has anyone seen similar mutations within a species?
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This trilobite pygidium was found in a talus slope at base of Fossil Mountain in Western Utah. As you can see it is quite weathered. I found it about 25 years ago when my mom and I went back country driving in my Ford Tempo lol. That car went into a number of not car friendly areas haha. From what I know of area geology I believe it would be Ordovician in age
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