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Showing results for tags 'mid devonian'.
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I am fortunate enough to have such a huge amount of Middle Devonian Givetian material that I thought it best to put the older Middle Devonian stage, the Eifelian, in its own thread. There are some spectacular fossils here as well though! I thought a good place to start would be in the Formosa Reef, which I believe is quite early Eifelian. This tabulate coral and stromatoporoid reef continues similar complexes found from the Middle Silurian, see my: https://www.thefossilforum.com/topic/84678-adams-silurian/page/3/ thread from page three onwards for details. All these Formosa Reef specimens come from a delightful gift from my good friend @Monica who is a tad busy with life at the moment but is fine and still thinking of the forum. This outcrop can be found on Route 12 near Formosa/Amherstburg, Bruce County, Ontario, Canada. This beautiful-looking specimen came to me with only a third of it revealed but I managed to get it this far after nine days of painful pin prepping. Monica found another one and posted it for ID here: https://www.thefossilforum.com/topic/105528-weird-circular-imprints-formosa-reef-lower-devonian/#comment-1172285 The specimen was identified by another Canny Canadian @Kane to be the little stromatoporoid sponge Syringostroma cylindricum. Hardly a reef-builder, but gorgeous nonetheless. It does have a little thickness to it, but not much. Beautiful! Pretty thin, actually. I love this Monica, thank you!
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- acanthopyge
- acanthopyge contusa
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These are each less than a millimeter long and I have no guesses. Needmore formation outside of Winchester VA. Shale containing several trilobite species, brachiopods, crinoids, typical mid Devonian marine stuff. Seem vaguely porous but they’re tiiiiiny so it’s hard for me to say.
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Working in the needmore formation outside of Winchester VA, mid Devonian gray shales where I find mostly trilobites, crinoid, brachiopods and some shelled cephalopods. These two little bits caught my eye. First, bifurcated spine (or looks like a spine? It’s preserved the way trilobite spines do in this formation). About 4 mm long. I’ve never noticed a species of trilobite out here that has bifurcated spines and now I’m curious. Second, cephalon next to a separate (I assume not associated?) pygidium. The pygidium I figure is a long shot on pinning down, but the cephalon looked interesting to me. Seems like something from the order odontopleurida? About 2 or 3mm wide
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From the album: Fossildude's Middle Devonian Fossils
Small plate with an Eldredgeops rana cephalon, crinoid stem/columnals, ostracods, and a Platyceras sp gastropod. Middle Devonian Hamilton Group, Smoke Creek, near West Seneca, NY.- 2 comments
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- crinoids
- eldredgeops
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Split this slab of needmore shale I found near Winchester Virginia and found this. I am by absolutely no means an expert, but I’ve worked in this formation a lot and I’ve never seen anything shaped/sized quite like this. The way the rock split, it seems to have laterally bisected the specimen. The fossil itself is 3 dimensional and the shell of either side of whatever this is was left on both sides of the split, along with some interior matter. As to the shell, it LOOKS like it’s segmented into quarter inch segments, also has the impression of what LOOK like eyes but can’t be sure. As to the interior matter, the most striking of it is the white chalky material, located on only one side of the specimen. I’ve never seen rock of that consistency anywhere in this formation myself, so again, no clue. Lastly there’s the smaller fossils immediately surrounding the largest fossil. They look to me (at least a couple of them) to be trilobites that just got preserved next to whatever this is, but again...
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- mid devonian
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I noticed this in my garage recently, and was diverted from the task at hand by the need to blow the dust out of it and have a look. About all I know is that it's from Maine. Most of the rocks are mid Devonian or lower marine formations. There is a chance it's from up in the county (Aroostook) where I've collected terrestrial plants. Scale in mm
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Just cleaning up a few finds from the Hungry Hollow Member (Mid-Devonian, Arkona, Ontario). I am awful at discerning between proetids based on certain fragments, so was hoping for an assist as to whether it is a Pseudodechenella or Crassiproetus. If memory serves, one has a bigger anterior cephalic brim. I can usually tell them apart if I have the pygidium (Crassiproetus has a more rounded, effaced one). I’m leaning more toward Pseudodechenella. Once the genus can be nailed down, I have a question about size ranges that I haven't come across in the literature. When measured around the curve of the glabella, I get 2.5 cm. That seems fairly large for examples I've seen elsewhere. That would have made this trilobite, whole, about 7+ cm (sag.). That seems a bit too big for most proetids I've encountered.
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Hi everyone, My sons found these in the back yard. I know they are some kind of clam, but not sure about specifics. They have pretty amazing details on them. Thanks in advance for any info.
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From the album: Fossildude's Middle Devonian Fossils
Dipleura dekayi, cephalon, and thorax/pygidium from separate individuals. Middle Devonian, Moscow Formation, Hamilton Group. Deep Springs Road, Lebanon, NY© © 2014 Tim Jones
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From the album: Hungry Hollow Fossil Pictures
I found this Icriodus michiganus n sp conodont plus an ostracod on a hash plate , there was also a jaw with teeth on it on the same hash plate , it's from the Arkona formation,Hungry Hollow, South Pit, its mid Devonian. I collected it last year on a CCFMS club sanctioned field trip .
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