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Showing results for tags 'trilobite'.
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I found some time this past weekend while passing through to take a look at a small stream cut exposing cyclothem layers of marine limestone and swamp coal in east central Illinois. Here are some fossils I found from the marine rocks. Bond formation. Offshore sediments, deep water. Ditomopyge sp. UV Lophophyllidium Not sure what these are. These are magnified. Each one about the size of a grain of sand. Assuming they are crinoidal. Any help with ID appreciated. Very tiny tooth measures <.5mm. The acrodin cap is characteristic of an actinopterygian, but I don't know if it can be identified any further than that. Thanks for looking.
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- carboniferous
- fish
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From the album: Fossildude's Lower Devonian Fossils
Most likely Synphoria stemmata. Thanks to @piranha for the ID. Lower Devonian, Glenerie Limestone Tristates Group Route 9W road cut, Glenerie, NY.© 2022 T. Jones
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- glenerie limestone
- glenerie ny
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From the album: Fossildude's Lower Devonian Fossils
Likely Synphoria stemmata. Lower Devonian, Glenerie Limestone Tristates Group Route 9W road cut, Glenerie, NY.© 2022 T. Jones
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are these olenellus/walliserops fossils authentic?
Rh_4m posted a topic in Is It Real? How to Recognize Fossil Fabrications
So eh, not much to say about the Olenellus fossil.
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A ogyginus trilobite or a Fake?
nala posted a topic in Is It Real? How to Recognize Fossil Fabrications
I could have this very nice looking Trilobite ID "ogyginus corndensis (murchison 1839) from gilwern hill, powys, wales. lower llanvirn, darwilian, ordovician"but i have a doubt,the sample seems for me too perfect to be real,the matrix is very light brown,could it be a fake?I only have this picture ,an Opinion? The prodactylioceras davoie Ammonite lower Pliensbachien carixien Cote d'Or - France on the side looks good for me but the trilobite is too perfect to be real,isn't it?Museum shop trilo resine cast?
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A couple months ago I took a trip to collect in the Middle Devonian of Iowa. It was a pretty good trip. I found some nice stuff and chatted with some very nice folks. Here are a couple of my finds. A partial ptyctodont tooth plate A neat sponge. I believe the genus is Astraeospongia but please correct me if I'm wrong. I was told these are rare from this area. A partial nautiloid And a partial Eldredgeops norwoodensis
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- 5
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- cephalopod
- devonian
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Harpes trilobite real?
Fissiletag posted a topic in Is It Real? How to Recognize Fossil Fabrications
Is this harpes trilobite real from China. Its from Yunnan. Also, if anyone knows the formation this could have come from it would be nice.
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From the album: Nautiloid’s Trilobite Collection
This is the largest Gravicalymene I’ve collected so far at over 1.25” wide. It required quite a lot of gluing but it should turn out pretty nice when all is said and done! Collected 11/04/2022© Owen Yonkin 2022
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- gravicalymene
- ordovician
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Recently I went fossil hunting along a road cut revealing some of the Coburn Formation, latest Ordovician. I was stunned to find that so much of the ecosystem was made up of only Trilobites and Cephalopods. I found trilobites such as Isotelus and Cryptolithus (First picture). My find of the day was a large, very heavy plate of rock that preserves different parts of large Isotelus gigas from multiple individuals, and the circular cross-section of a small cephalopod (Second picture). However, I'm having trouble identifying these cephalopods. In the very few that preserve the outer sell, faint striae can be observed. The septa, when visible, are close together. On some of the smaller specimens, which may be a different species or the same, the uncrushed cross-section reveals what appears to be a small, eccentric siphuncle (Sixth picture). Most specimens, because of their size, are crushed flat. Only much smaller individuals sometimes retain their original shape. Arrows indicate septa unless stated otherwise. The large cephalopods appear similar to both "Michelinoceras" and Geisonoceras tenuistriatum, but this species is restricted to the Whitby formation in Ontario. Could anyone help?
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this is a strange one, coming from devonian deposits from morocco. I have seen this long time ago, but forgot the name. And could not find it in the LEBRUN-Book Size is approx. 3 cm Found it in a box today and think, it will be necessary to do a little work on it next winter. For my opinion everything is original
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Show Us Your Rarest Or Most Incredible Partial Fossils!
Kurufossils posted a topic in Member Collections
Here is a thread to share some of your rarest partials that if whole would've been incredible specimens, but you know how it is sometimes... Yet they still amazing to own a piece of. I will start off by sharing a piece of the tail of a Probolichas Kristiae, an incredibly unique looking rare lichid trilobite from Oklahoma that would've of been incredible if whole of course yet this piece still has amazing detail and I am more that happy to own
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From the album: Nautiloid’s Trilobite Collection
This bug is in rough shape but I still kept it due to its massive size. It would’ve been 10.5-11.5 inches long if the bottom half of the pygidium wasn’t MIA. As you can see, the left half was exposed to the elements and is heavily weathered, but the right half is still relatively salvageable. This is by far the largest trilobite I’ve ever collected! Collected 11/04/2022© Owen Yonkin 2022
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- isotelus
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From the album: Nautiloid’s Trilobite Collection
This bug is exactly 6 inches long. It’s not super inflated, and a small piece of the pygidium is missing. Other than that it’s pretty much perfect! From the Trenton Group of New York. Collected 11/04/2022© Owen Yonkin 2022
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- isotelus
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From the album: Trilobites from Morocco and Rest of the world
nice and small (2 cm) Foulonia sp., Ordovizium, Fezouata-Biota, Morocco -
I love to show a really really nice fossil from our collection. Small stone (8 cm long) with two rare Acantharges mbareki from morocco / l´Ougnate, Devonian. Very special is to see both side. One is from the top, the other from the bottom, showing the hypostom (I think its the Hypostom, round but position fits) both are approx. 1.5 cm long enjoy
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From the album: Trilobites from Morocco and Rest of the world
another Acantharges mbareki from l´Ougnate, Devonian. Rare to see the bottom side with special hypostom, size is approx. 1.5 cm -
From the album: Trilobites from Morocco and Rest of the world
A nice and rare devonian Trilobite is the first one in this Album. It is Acantharges mbareki from l´Ougnate, size is approx. 1.5 cm, small but fine one -
Been on a bit of a bug hunt lately. After a lot of effort, I found a layer with trilobites. After some research, it seems the 3 types of trilobite genus available in Pennsylvanian aged rocks around this area are Ameura, Anisopyge, and Ditomopyge. Ameura missouriensis is reported from the Deer Creek Formation and looks like the closest match. I just wanted to get some second opinions and see what others thought as well. Enrolled, but missing cheeks Isolated cephalon
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- deer creek formation
- missouri
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Paleozoic rock. I found this looking back through some scrap rocks. I think this is a stone I found some crinoids, brachiopods, horn corals, and a trilobite in before. .75 inches long (sorry for not including a scale in the picture) thanks!
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- arthropod
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Fossil hunting trip in Utica, Illinois October/29/2022
Joseph Fossil posted a topic in Fossil Hunting Trips
On Saturday, I went on a fossil hunting trip with @Tales From the Shale in the area of Utica, LaSalle County, Illinois. After some time driving and looking for roadcuts, we discovered an abandoned clay bed/outcrop not too far away from the town itself. There, we discovered an absolutely massive amount of shark spines and teeth! I would like to know if anyone could properly ID some of the specimens we found!! \ This is one of the best shark spines I found at the site!!! It does look somewhat like the spine of Listracanthus, but I'm not 100% sure!! Possible Crusher plate tooth or maybe the bottom part of a large cladodont? Likely fish teeth or denticles, but I'm don't yet know what species/genus this could belong to? I really don't know what this could be? Maybe some sort of mineral or a fish head? Truly beautiful chondricthyian tooth in a clay matrix!!! However, I still don't know what specific group it could belong to? Maybe it could be a large crusher plate?
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- brachipod
- carboniferous
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Found a real nice exposure of the Glen Dean Formation in central Kentucky recently. Oh man did it not dissapoint. So here is some of the best crinoid material I have ever found. A calyx with partial arms, pictured with some stems and ossicles. A single ossicle, with crinoid spins, that are still sharp. Both of which are as common as gravel here. A small peculiarcalyx and crinoid cup. This massive gorgeous Pentremites sp. I found this one on my first trip, so unfortunately no scale but I will upload more of it later. More large blastoids this time around as well. It may not be as diverse, but I have only seen this quality of blastoids in the Thunder Bay of Michigan. An uncrushed Composita sp. A nice spirifid of some variety. I want to say Neospirifir but that is likely incorrect as it does not fit the range. The partial pygidium of a Kaskia chesterensis? Mm mm mm! These delicously preserved Zaphrentis spinulosum. I have some monsters of these, but again they're from a previous trip so I will post them later. I did find some gastropods and tons upon tons of crinoid stems and bryozoans as well, here is one image of them with various other pieces. The Glen Dean of Illinois occurs nearly on the same Latitude as this locality does. However it does not compare with the sheer quality and quantity to be found here in Kentucky.
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- blastoid
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From the album: ECHINOIDS & OTHER INVERTEBRATES
A trilobite, Family Asaphidae, Homotelus bromidensis, from the Ordovician of Carter County, Oklahoma.© ©Harry Pristis 2015
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Muskogee, Ok USA While expanding a pond came across this. It reminds me of a trilobite. It is still in the bottom, hoping to get some help with ID. Thank you.
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This partial cephalon is on a block of lower Devonian Birdsong shale from Parsons. Tennessee USA. There are several types of Dalmanites in this shale and two other partials are on this same block. The problem is that none of the species that I am familiar with have an anterior margin that wraps around the glabella the way this one does. Even with the margin being broken along a suture, it still doesn't provide a match with anything I am familiar with from this formation, and I can only find a few types that would have this effect if a suture is followed. The lenses are missing from the eyes where they seem to have evenly broken at a suture. Even with it being distressed, the eye position is a bit odd. The closest I can find is Malladaia and it is not a perfect fit. I yield to sharper minds than mine.
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- dalmanites
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Trilobites- poorly prepared or fake
Kribensis posted a topic in Is It Real? How to Recognize Fossil Fabrications
These fossils I purchased prior to 2005. At the time I thought I was buying poorly prepared trilobite fossils. I wanted some trilobites and didn’t want to pay a lot as they weren’t a central part of my collection. Recently, I saw a website, that also sold trilobites, stating that trilobites that looked similar to these were clearly fake. So fake or poorly prepared? Appreciate your help
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