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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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On Tuesday this week, myself and some of my family spontaneously decided to get out and drive to some interesting places in New York state to enjoy the day. We visited some beautiful locations like these two waterfalls: On our journey, we ended up around Gilboa, which is the location where one of the earliest known fossil forests was discovered with amazing plant and animal life, some of these fossils are exhibited outside near the town hall. This, being one of the many locations I had wanted to visit for years, was an opportunity I could not pass up, so while driving through the town we stopped by to take a look at these amazing pieces of history and get a few pictures: These are just some of the fossils displayed there, I have also really wanted to get to fossil hunt for some of the plant remains from this formation in Schohaire creek nearby, but unfortunately due to the very spontaneous nature of all of this I was not ready with the locations I had noted down where we could have done so and I did not get to collect anything from there on that day. We did, however, still have a little bit of time before it would get dark and I made the suggestion that we go collect some fossils at another, familiar location as it isn't often that I get to be around these places. So that is what we did, setting out for a quick hunt in the lower Devonian Kalkberg formation at a site only around 30 minutes away. Overall we probably got to hunt for around an hour, but it was a surprisingly productive time. Last time I visited here, I wasn't able to find that many of certain organisms I was interested in like the beautiful Leptaena sp. but this time, we found an abundance of these fossils, along with many other nice specimens. Here are some of my favorite finds from the trip: A few of those Leptaena sp. I wanted to get This one was my favorite, not the most complete but quite large and has very nice surface detail. A small but detailed spiriferid with some nice bryozoa: The largest spiriferid I've found here, needs some prep but a very nice fossil still: This one was a big surprise for me, I kept it because of the nice spiriferid on there but upon getting home I noticed a shiny dark patch below, turns out it was a Linguliform brachiopod, something I had never seen from the formation before. It's not complete, I wish we had noticed while we were there and potentially found the other side, but this is still a find I am very excited about. This also made me wonder something, most brachiopods preserve with a matte, sometimes slightly shiny texture to their shell, while all of the Linguliforms I have seen have a very glossy surface to them. Is this difference caused by differing shell composition? It is quite interesting and something that seems to occur throughout geological time, in many formations with varying preservation. @Tidgy's Dad maybe you know something about this? Some pretty nice orthids: This one was quite big, and appears pretty complete, I would like to get it prepped some day, I think it may turn out quite nice: Another strophomenid similar to Leptaena but with much shallower rippling along its surface, I was wondering if this may be another genus, looking in my field guide I see that Strophonella and Rystistrophia both also have concentric wrinkles, although I am not sure which if any of them this one may be: A coral? not really sure what this branching fossil is, but it seems quite interesting, not anything I've seen here before. A pair of nice solitary rugose corals: This one doesn't show up too well on camera but it's a pretty large platyceratid gastropod, I have a few from this location but this one has some very interesting wrinkles to the shell, quite different from all my other ones. This is another large fossil, I think it may be a gastropod also? it has a similar dark shell to most of the gastropods I've found here, plus it seems like it may be curving in a helical pattern out of the matrix slightly, but I may be wrong. And to finish, here are some nice hashplates I collected from the site: Thanks for looking!
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Hello everyone! I have been recently going over some of the matrix I collected over the summer, more specifically, stuff from the Lower Devonian Kalkberg Formation in NY. I have found many nice new brachiopods which is what I was looking for, like a fairly nice preserved Leptaena which I was really excited about as I didn't get any initially and they are really beautiful. While cleaning out that brachiopod this fossil also popped out of the rock, I saw its cross-section and initially didn't think much of it but when I got it in hand it appeared to be a trilobite cephalon, it is tiny and unfortunately due to the nature of this matrix as I was trying to save it parts crumbled away. I am now left with what you see in the pictures, to me, it looks like a proetid cephalon but I have no knowledge of whether this group is present in this formation and what it could be. Any help in identification would be greatly appreciated, Thank you.
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Hello everyone! This trip report is a bit late but I have been trying to identify and get better photos of some fossils before posting this, First some pictures at the actual site:
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Hello all, I have a few fossils that do not fit into the ID categories of topics I have already created so I will post them here. This first one I have no idea what it is, it has an asymmetrical shape with a beak-like portion to the shell that curves to one side. It is somewhat similar to a modern slipper limpet. I don't know if this is a gastropod, pelycopod, or something else. I am not expecting to get a genus or species for this thing since all of the shell is missing but being able to identify it to some extent would be great.
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I just remembered this object that I found in the Kalkberg formation. Upon first seeing it I thought it might be a concretion, but after washing it up my opinions have changed. Now I can see many other fossils alongside it and after comparing to other Kalkberg fossils I believe it may be Hindia sphaeroidalis, Is this ID accurate? I appreciate any help.
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Hello everyone, I am looking to get some more definitive IDs for these finds from the Lower Devonian Kalkberg Formation in NY. I have some idea for what these guys might be but I would like to see other opinions from the forum before I start labeling them. I will post more brachiopods as I take and process pictures, but here are the first few: 1. I believe these are three might be Rhipidomella
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Another fossil from the Kalkberg, With this one, I have absolutely no idea what the ID could be or even which grouping of animals it belonged to. Coral? Gastropod? Something else? Here is the object in question: It is similar to a cone although compressed, and that widest part of the fossil is around 6cm in width. This is the view from that wide section. Here is also a picture of it wet as that shows the surface texture better: My best guess is a gastropod due to there not being any internal structure that would be expected from a coral, but I have not seen any this big so I am not sure. Any help is appreciated.
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Hello everyone, Yesterday I was able to go to an exposure of the Kalkberg formation to do some fossil hunting. It was a great trip and I was able to bring back some neat fossils. Most I have been able to ID, although I will post them later for confirmation. But I cannot say the same thing for a few of them as I am really confused as to what they may be. Here is the first, after looking through the Linsley PDF the only thing I found that was somewhat similar is the trilobite Oinochoe pustulosus but I am not sure that this is it. As always, any help is appreciated. Thank you.
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From the album: Lower Devonian Helderberg Group in Eastern NY
Kosovopeltis pompilius Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20-
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Rhynchonellid brachiopod from the Kalkberg Formation
Nautiloid posted a gallery image in Member Collections
From the album: Lower Devonian Helderberg Group in Eastern NY
Ancillotoechia acutiplicata Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20-
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Spiriferid brachiopod from the Kalkberg Formation
Nautiloid posted a gallery image in Member Collections
From the album: Lower Devonian Helderberg Group in Eastern NY
Howellella cycloptera Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20-
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From the album: Lower Devonian Helderberg Group in Eastern NY
Meristella princeps Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20-
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Orthid brachiopod from the Kalkberg Formation
Nautiloid posted a gallery image in Member Collections
From the album: Lower Devonian Helderberg Group in Eastern NY
Discomyorthis oblata Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20-
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From the album: Lower Devonian Helderberg Group in Eastern NY
Platyceras spirale Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20 -
Gastropods: Diaphorostoma depressum Platyceras spirale? Tremanotus profundus (very flattened specimen).
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I know this trip happened a while ago, but I’ve been pretty busy as of late finishing up the school year and such and haven’t had a chance to make a trip report. Hopefully y’all find this interesting.
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I’m almost done prepping this gastropod I found a couple weeks ago at the roadcut along Rickard Hill Rd. in Schoharie, NY, but I am unsure of the species. It is from the Lower Devonian Kalkberg formation.
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Pyritized brachiopod from the Kalkberg Formation
Nautiloid posted a gallery image in Member Collections
From the album: Lower Devonian Helderberg Group in Eastern NY
Leptaena rhomboidalis Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20-
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Uncommon trilobite from the Kalkberg Formation
Nautiloid posted a gallery image in Member Collections
From the album: Lower Devonian Helderberg Group in Eastern NY
Kosovopeltis pompilius pygidium Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20-
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I recently broke open a few slabs of rock I took home with me from Rickard Hill Road in Schoharie the last time I was there. The rock was very crystalline and hard to break and there weren’t a ton of fossils inside. I did manage to find a couple of trilo-bits that were very well preserved and very detailed. One of these bits I’m having a bit of trouble identifying. I’m almost certain it’s a trilobite pygidium but it looks like nothing I’ve ever seen before. The great preservation makes the details of the shell stand out. It is around 1cm long and wide.
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Brachiopod and bryozoan hash plate from the Kalkberg Formation
Nautiloid posted a gallery image in Member Collections
From the album: Lower Devonian Helderberg Group in Eastern NY
Plate of brachiopods including Howellella cycloptera, and bryozoans including Fenestella crebipora. Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20-
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From the album: Lower Devonian Helderberg Group in Eastern NY
Favosites helderbergiae Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/31/20-
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From the album: Lower Devonian Helderberg Group in Eastern NY
Actinopteria textilis Lower Devonian Helderberg Gr. Kalkberg Fm. Rickard Hill Roadcut Schoharie, New York Collected 5/20/20-
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I found this fossil last weekend at the road cut along Rickard Hill Road in Schoharie, New York. It is from the Lower Devonian Kalkberg formation. The surface has no texture at all. The fossil has a thickness of about 1mm. Originally I thought it was less than 2 inches long and wide but I was able to prep out the rest of the fossil due to the softness of the matrix. It is about 3 inches wide and long.
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