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Showing results for tags 'middle devonian'.
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Hello all. This is a cephalopod that was found by Darktooth Dave on our last outing at Deep Springs Road. (Middle Devonian, Moscow Formation, Hamilton Group, Lebanon, NY. ) He kindly gifted me the slab this was in. While trying to break down the slab, as it was quite huge, (2ft by 2ft, by 3" thick) the darn thing popped out. No other pieces to remove, just the one. This is the first slightly coiled cephalopod of this type that I've seen from there, so I'm struggling with an ID. Not only that, but it has an encrusting example of Hederella filiformis on it. Ultra cool specimen! Thanks again, @Darktooth! I'm guessing this is either a Gomphoceras, or a Cyrtoceras? Anyone have any other thoughts, on genus/species? Thanks for any help, and for looking.
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Another great hunt in Paulding, OH. Weather was windy, rainy, and cold, but neither the fossils nor the avid fossil hunter seemed to mind. Here are some of the finds. I have also begun a working species list for the site in the Ohio fossil sites subforum linked here: Paulding Species List
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Here is a large brachiopod I found recently at Paulding, OH. Distinguishing Megastrophia from Stropheodonta titan can be difficult, but I think this one is S. titan due to its low profile. The side shown here is largely exposed, but the other side was covered in matrix. Unfortunately, this field photo is the only "before" photo I took. I decided to leave this one on a pedestal of matrix. The matrix was really sticky. The bulk would pop off with the scribe, but a thin layer clinged to the shell. So rather than scratch up the shell with a pin vice or take hours blasting it, I prepped this one chemically with KOH flakes. About 80% of the "prep" was done chemically. The Silica Shale is rich in organics, and the KOH turns the shale into mud. I made several applications on the thick areas of matrix. Final procedure included reversal of the base by a quick dip in 5% glacial acetic acid and then a good soak in water. Here's the result.
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Hi. I've spent the winter reviewing my finds from 2017. Here are two images. Initially I thought the radiating arms were those of a brachiopod, but I'm now having my doubts. Could they be crinoid arms? (The specimen in the top image is on the upper left corner.) I failed to include a measurement scale, but the top specimen would be covered by a penny, and the bottom by a nickel. They're tiny. Thoughts? (Paulding, Ohio; Middle Devonian; Silica Shale)
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This might be a job for @piranha This trilobit looks a little different to me than the typical Eldredgeops. Maybe Dechenella lucasensis? I didn't realize how poor the photo quality was until I cropped it. I can take more photos under the scope if necessary. Silica Shale, middle Devonian (Givetian), Paulding, Ohio. Scale in cm/mm. This one seemed different as well.
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Is this what I think it is? A camera steinkern of an orthoconic nautiloid? This is from the middle-Devonian Silica Shale of Paulding, Ohio (although because it is quarry spoil, there is a possibility it could be the underlying Dundee Limestone). I don't think I've ever found an orthocone in the Silica Shale, let alone one this large. I hope this is not something that has been intentionally or unintentionally salted in from another site... That really burns me up.
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From the album: Fossildude's Middle Devonian Fossils
Lingula delia imprint. Middle Devonian, Moscow Formation, Hamilton Group. Deep Springs Road, Lebanon, NY.© © 2014 Tim Jones.
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It sometimes pays to look over favosite corals , I found this scolecodont jaw attached to the bottom of a large one , it's roughly 1mm in size, middle Devonian,Hungry Hollow mb, Arkona,Ontario. I donated it to the Arkona Lions Museum And Information Centre In Arkona, Ontario -
From the album: Hungry Hollow Fossil Pictures
Hyolithes aclis (Hall) Size 12.8 mm Length X 3.08 mm Width Mid Devonian Arkona formation in the South Pit at Hungry Hollow . Arkona,Ontario I collected this on a CCFMS club sanctioned field trip last year . -
From the album: Hungry Hollow Fossil Pictures
I found this jaw with several teeth on it, on a hash plate with an Icriodus michiganus n sp conodont plus an ostracod, there both less than 1mm in size, 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 . -
From the album: MY FOSSIL Collection - Dpaul7
Phacops Trilobite Fossil Morocco Middle Devonian 393-383 million years ago Phacops is a genus of trilobites in the order Phacopida, family Phacopidae, that lived in Europe, northwestern Africa, North and South America and China from the Early until the very end of the Devonian, with a broader time range described from the Late Ordovician. It was a rounded animal, with a globose head and large eyes, and probably fed on detritus. Phacops is often found rolled up, a biological defense mechanism that is widespread among smaller trilobites but further perfected in this genus. Like in all sighted Phacopina, the eyes of Phacops are compounded of very large, separately set lenses without a common cornea (so called schizochroal eyes), and like almost all other Phacopina, the articulate mid-length part of the body (or thorax) in Phacops has 11 segments. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Phacopida Family: †Phacopidae Genus: †Phacops -
From the album: MY FOSSIL Collection - Dpaul7
Gerastos granulosus Trilobite SITE LOCATION: Morocco, probably Djebel Issoumour area , Atlas Mts. TIME PERIOD: Middle Devonian (395 million years ago) Proetida is an order of trilobite that lived from the Ordovician to the Permian. It was the last order of trilobite to go extinct, finally dying out in the Permian extinction. These typically small trilobites resemble those of the order Ptychopariida, from which the new order Proetida was only recently separated in 1975 by Fortey and Owens. Like the order Phacopida, the proetids have exoskeletons that sometime have pits or small tubercles, especially on the glabella (middle portion of the head). Because of their resemblance to the Ptychopariida in some features, the proetids are included in the subclass Librostoma. Unlike the trilobites of the Phacopid suborder Phacopina, whose eyes are schizochroal, the proetids have the more common holochroal eyes. These eyes are characterized by close packing of biconvex lenses beneath a single corneal layer that covers all of the lenses. Each lens is generally hexagonal in outline and in direct contact with the others. They range in number from one to more than 15,000 per eye. Eyes are usually large, and because the individual lenses are hard to make out, they look smooth and sometimes bead-like. The thorax of proetids was made up of anywhere between 8–22 segments, but most commonly 10. Many also extend the backcorners of the headshield into so-called genal spines. These two features can aid in distinguishing proetids from some Phacopid trilobites in the suborder Phacopina, to which they can be very similar. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Proetida Family: †Proetidae Genus: †Gerastos Species: †granulosus -
From the album: MY FOSSIL Collection - Dpaul7
Gerastos granulosus Trilobite SITE LOCATION: Morocco, probably Djebel Issoumour area , Atlas Mts. TIME PERIOD: Middle Devonian (395 million years ago) Proetida is an order of trilobite that lived from the Ordovician to the Permian. It was the last order of trilobite to go extinct, finally dying out in the Permian extinction. These typically small trilobites resemble those of the order Ptychopariida, from which the new order Proetida was only recently separated in 1975 by Fortey and Owens. Like the order Phacopida, the proetids have exoskeletons that sometime have pits or small tubercles, especially on the glabella (middle portion of the head). Because of their resemblance to the Ptychopariida in some features, the proetids are included in the subclass Librostoma. Unlike the trilobites of the Phacopid suborder Phacopina, whose eyes are schizochroal, the proetids have the more common holochroal eyes. These eyes are characterized by close packing of biconvex lenses beneath a single corneal layer that covers all of the lenses. Each lens is generally hexagonal in outline and in direct contact with the others. They range in number from one to more than 15,000 per eye. Eyes are usually large, and because the individual lenses are hard to make out, they look smooth and sometimes bead-like. The thorax of proetids was made up of anywhere between 8–22 segments, but most commonly 10. Many also extend the backcorners of the headshield into so-called genal spines. These two features can aid in distinguishing proetids from some Phacopid trilobites in the suborder Phacopina, to which they can be very similar. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Proetida Family: †Proetidae Genus: †Gerastos Species: †granulosus -
From the album: MY FOSSIL Collection - Dpaul7
Gerastos granulosus Trilobite SITE LOCATION: Morocco, probably Djebel Issoumour area , Atlas Mts. TIME PERIOD: Middle Devonian (395 million years ago) Proetida is an order of trilobite that lived from the Ordovician to the Permian. It was the last order of trilobite to go extinct, finally dying out in the Permian extinction. These typically small trilobites resemble those of the order Ptychopariida, from which the new order Proetida was only recently separated in 1975 by Fortey and Owens. Like the order Phacopida, the proetids have exoskeletons that sometime have pits or small tubercles, especially on the glabella (middle portion of the head). Because of their resemblance to the Ptychopariida in some features, the proetids are included in the subclass Librostoma. Unlike the trilobites of the Phacopid suborder Phacopina, whose eyes are schizochroal, the proetids have the more common holochroal eyes. These eyes are characterized by close packing of biconvex lenses beneath a single corneal layer that covers all of the lenses. Each lens is generally hexagonal in outline and in direct contact with the others. They range in number from one to more than 15,000 per eye. Eyes are usually large, and because the individual lenses are hard to make out, they look smooth and sometimes bead-like. The thorax of proetids was made up of anywhere between 8–22 segments, but most commonly 10. Many also extend the backcorners of the headshield into so-called genal spines. These two features can aid in distinguishing proetids from some Phacopid trilobites in the suborder Phacopina, to which they can be very similar. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Proetida Family: †Proetidae Genus: †Gerastos Species: †granulosus -
From the album: MY FOSSIL Collection - Dpaul7
Phacops Trilobite Fossil Morocco Middle Devonian 393-383 million years ago Phacops is a genus of trilobites in the order Phacopida, family Phacopidae, that lived in Europe, northwestern Africa, North and South America and China from the Early until the very end of the Devonian, with a broader time range described from the Late Ordovician. It was a rounded animal, with a globose head and large eyes, and probably fed on detritus. Phacops is often found rolled up, a biological defense mechanism that is widespread among smaller trilobites but further perfected in this genus. Like in all sighted Phacopina, the eyes of Phacops are compounded of very large, separately set lenses without a common cornea (so called schizochroal eyes), and like almost all other Phacopina, the articulate mid-length part of the body (or thorax) in Phacops has 11 segments. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Phacopida Family: †Phacopidae Genus: †Phacops -
From the album: Fossildude's Middle Devonian Fossils
Greenops sp. trilobite partial. More prep may reveal more if the cephalon is there. Middle Devonian Windom Shale. Moscow Formation, Hamilton Group. Deep Springs Road Quarry, Lebanon, NY. Found on 11/30/2017, in the presence of JeffreyP.© 2017 Tim Jones
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From the album: Fossildude's Middle Devonian Fossils
Almost complete Greenops sp. trilobite. Middle Devonian Windom Shale, Near Buffalo, NY.© © 2011 Tim Jones
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Found as surface float on the scree pile at the Kashong exposure. Originally assigned to Delthyris, reassigned to Spirifer, Acrospirifer, and Patriaspirifer. Alternate spellings: P. duodenaris, P. duodenaria, P. duodenarius. Does not appear in Fossilworks or Wilson’s “Field Guide to the Devonian Fossils of New York”. Classification information from Fossilworks entry for Patriaspirifer genus. Reference: Linsley, D. M. Devonian Paleontology of New York. (1994) Paleontological Research Institution Special Publication 21. Hall, J. Palaeontology of New York v. 4. (1867) Fossilworks. http://fossilworks.org Yale Peabody Museum Collections website (http://peabody.yale.edu/collections/invertebrate-paleontology)
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Found as surface float at the bottom of the Windom exposure. Reference: Wilson, K. A. “Field Guide to the Devonian Fossils of New York” (2014). Paleontological Research Institution Special Publication No. 44.
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Last week i enjoyed my holiday in Belgium in the Ardennes. Too bad that the weather was sometimes not that good but all in all it was a nice and successful holiday. I spent one complete day in an old quarry near Resteigne, where you can find many different fossils. The layers belong to the Eifelium, Middle Devon. For example I found brachiopods, corals and some trilobite parts. I will post them in a few days. But I also found an interesting item which I cant identify ! Its about 2 cm long and in my eyes it looks strange Maybe a kind of crinoid?? Any help is welcome ! Thanks !
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More rocks I split (again thank you to @Rocky Stoner for them) and I found a few of the first one, a type of bryzoan? Next I have two things I notice do on a rock that has a trilo cephalon on it. . The thinner bar I'm guessing is a burrow, but I don't know what the thick bar could be. Lastly a bivalve? Any ideas on its identity? I have a few of them.
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From the album: Canandaigua trilobites
Lots of trilobite parts, a few mediospirifer sp's. Very busy. Fragile mudstone, difficult to split or remove matrix without destroying specimens. -
From the album: Canandaigua trilobites
Several thoraces, two cephalons of Eldregeops Rana from what is probably the Smoke Creek Trilobite Bed of the Windom Shale. This sample comes from a creek on private land on the West shore of Canandaigua Lake in New York State Finger Lakes region -
Some finds from my Spring 2017 collecting season. Pictured specimens were collected in situ from the Hungry Hollow Mbr. of the Widder Formation (Middle Devonian, Hamilton Group, Southwestern Ontario). Due to file size restrictions I'll split the posts by phylum. Prone Eldredgeops (unprepped). Specimen consolidated with 6:1 water to PVA solution in field. Reverse side later coated with Acryloid (Paraloid) B-72 to stabilize matrix. Prone Basidechenella (unprepped). Consolidated as above. Missing lateral border and genal spine on one side of cephalon. This genus' exoskeleton preserves painfully thin making it a pain in the pygidium to collect.
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Some finds from my Spring 2017 collecting season. Pictured specimens were collected in situ from the Hungry Hollow Mbr. of the Widder Fm. (Middle Devonian, Hamilton Group, Southwestern Ontario). Due to file size restrictions I'll split the posts by phylum. Graptolites (unprepped). These enigmatic creatures are undescribed from the Hungry Hollow Member.
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