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Showing results for tags 'Maine'.
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These are more trilobite segments, and one cephalon, from the Leighton Formation, Maine, silurian. I believe them to be the new species of Calymene trilobite that I found earlier, but am unsure. The first pictures are of the first specimen, numbers 1 and 2 being of the cephalon, and the third of a thorax segment that was underneath the cephalon (you can see the edges of it in picture 2): The next pictures are of new specimens. Number one and two are of a cephalon. Unfortunately, I was unaware of its existence until after it came out in multiple pieces. It is about 1 cm by 1cm. Here are the pictures: Second are two different specimens. Number one is 11 mm by 5 mm, and number 2 is 6 mm by 3 mm. Here are the pictures: Any help would be appreciated. Thanks!
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This is my first almost complete internal mold of an orthocone nautiloid. It is from the Leighton Fm, Maine. From the little I can see of the external mold, I believe it to have the same grooves as in the Possible Fossil Coral post, but I am unsure. Help on the general id of it would be greatly appreciated. Here are some pictures of it:
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Chonetes bastini was first described from the Leighton Fm, also called the Pembroke Fm. It is differentiated from other species by the number of spines and its finer more numerous striae. Most specimens are missing the hinge spines. The above pictures show the pedicle valve. A poorly preserved original or cast of the shell exterior is in the left side photo. Some of the exterior of the shell may be missing since there is a horizontal groove above the shell where shell may have once filled it. The right photo shows an exterior impression or mold. Williams, Henry Shaler (1985). "New species of Silurian fossils from the Edmunds and Pembroke Formations of Washington County, Maine." Proceedings U.S. National Museum, 45, 319-358. https://repository.si.edu/bitstream/handle/10088/14399/1/USNMP-45_1985_1913.pdf
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- brachiopod
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Actinopteria bella is a species of bivalve found in the Leighton/Pembroke Fm, and first described by Henry S. Williams. It is differentiated from A. fornicata by less convexity in its shell and a wider beak. It is differentiated from A. dispar by its shorter shell. The above pictures are of the left valve. A poorly preserved original or cast of the shell exterior is on the left side. Some of the exterior of the shell may be missing since the exterior ribs have less than normal height. The right photo is an exterior impression or mold. Some of the shell may be present on the right side of the photo. Williams, Henry Shaler (1913). "New species of Silurian fossils from the Edmunds and Pembroke Formations of Washington County, Maine." Proceedings U.S. National Museum, 45, 319-358. https://repository.si.edu/bitstream/handle/10088/14399/1/USNMP-45_1985_1913.pdf Maine Geological Survey (2009). Virtual Tour of Maine's Fossils. https://digitalmaine.com/cgi/viewcontent.cgi?article=1575&context=mgs_publications
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This is another fossil from the Leighton Fm, Maine. It is an Actinopteria bella, a bivalve that was first described at this formation (here, https://repository.si.edu/bitstream/handle/10088/14399/1/USNMP-45_1985_1913.pdf). I have had multiple specimens of it, but this is the first one that came out in one piece. The pictures below are of the internal and external mold (top to bottom).
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- actinopteria bella
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Fossil Forum, I have recently uncovered the external mold of a gastropod. I am thinking that it is Platyschisma helicites, but am unsure. The main problem is that I am unaware of the formation it is from. I found it right next to an outcrop of the Leighton Formation, but the fauna and the matrix does not match it. It might be from the Edmunds Formation, but I am unsure of this too. Either way, they are both Silurian. Any help on its ID would be appreciated. Here are some pictures of it:
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Fossil forum, I have just finished uncovering a gnathasome fish scale. It is from the Leighton Fm, Maine. I believe it to be in the genus Gomphoncus, maybe even Gomphoncus sandelenis, which was described as being in the Eastport Formation (https://www.erudit.org/fr/revues/ageo/2018-v54-ageo04224/1055415ar.pdf). I am unsure of this id though, mainly because of the pit in the largest end of the scale. It is approximately 200 microns long by 250 microns wide by 200 microns deep. Any help on the id of the genus, or maybe even the species, would be greatly appreciated. Here are some pictures of it:
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Fossil forum, This is another fossil from the Leighton Fm. I just finished recovering it from some fossiliferous rock I brought back with me. It is about 575 microns long. Any help on its id would be appreciated. Here is a picture of it:
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Fossil forum, I just uncovered this possible fossil. It is from the Leighton Fm. To be honest, I am not sure it is actually a fossil, but I wanted to check. I was thinking that it could be a conodont element, but am unsure. Any help on its id would be helpful. Here are some pictures of it:
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Fossil forum, This is another fossil from the Leighton fm. I have just uncovered it, and at first thought it was a trilobite cheek. On closer inspection I realized that the external and internal mold are not smooth, but appear slightly porous. As well as this, the ridge appears too high in both molds. Any help on its id would be appreciated. Here are some pictures of it (internal mold on the left, external on the right):
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Fossil forum, This is another fossil from the Leighton formation. It is a completely undamaged orthocone nautiloid. I think it is the same species that I showed earlier in the possible fossil coral post, but I am not sure. The external mold has the same grooves, but the internal mold is divided into two sides, each with bumps. Is this normal for a nautiloid fossil? Any help would be appreciated. Here are some pictures of it (internal mold on the left, external mold on the right):
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Fossil forum, This is another brachiopod from the Leighton Fm. It is a rhychonellid, but I am unable to identify it to the genus. I originally thought it was Rhychonella, but I see problems with this id. Any help would be appreciated. Here are some pictures of it (1-4 are internal molds, 5 is a separate specimen same species external mold) :
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Fossil forum, These are specimens from the Leighton Fm. They are all located on the same block. I believe that the specimens I have taken pictures of are of the same species, but don't know what species. All the available literature I have looked at has not identified the genus. Any help with the genus, and maybe even the species, would be greatly appreciated. Here are some pictures of them (internal molds on the left, external on the right):
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Fossil forum, This is another fossil from the Leighton Fm haul. I was thinking coral, because of the external mold of it, but the internal mold has interesting segments. Unfortunately, the internal mold is missing a piece. Here are some pictures (internal mold on the left, external on the right):
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Fossil forum, This is another specimen from the Leighton Fm. I had two possibilities, Lingula scobina and L. lewisii, which I found mentioned in this paper https://repository.si.edu/bitstream/handle/10088/14399/1/USNMP-45_1985_1913.pdf, and which I further researched. The main problems I have with these two species are that L. scobina has different surface sculpture, and L. lewisii is an English species. Any further guidance or suggestions? Here are some pictures of it (internal mold on the left, external on the right):
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Fossil forum, This is yet another fossil from the Leighton Fm, Maine, which is Silurian. I have found multiple specimens of this species, but none with such exceptionally preserved hinge spines. I think that it is in the genus Chonetes, maybe even Chonetes bastini, which is known from this formation, but I am not sure. Here are some pictures of it (internal molds on the left, external on the right):
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Fossil forum, Good morning. I recently found an interesting fossil invertebrate. It was found at the Leighton formation, Maine. I was thinking possible coral, but the segments on it were perplexing. Trilobite didn't seem to fit because of the size and the shape of the segments. Any help would be appreciated. Here are some pictures of it (the internal mold is on the left, external on the right):
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Fossil Forum, I recently found multiple brachiopods that I believe are in the genus Salopina, moved from Orthis, and of the same species. I found them in the Leighton Fm, Maine, which is Silurian. I was wondering if anyone could tell me what the species was, and also if anyone had any literature on this genus. Here are some pictures of them (internal molds are on the left, external on the right):
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- brachiopod
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Fossil Forum, I recently found a single ostracod in a fossiliferous rock I collected from the Leighton Fm. The formation is Silurian. I was thinking there was a possibility that it was Zygobeyrichia devonica, which I saw mentioned as being in the Chapman Sandstone at this website https://pubs.usgs.gov/pp/0089/report.pdf, but the valves did not match, and the formation was not Silurian. Here are some pictures of it:
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I have two fossil rocks like this one, around the same size. I find these in the Telos Lake to Frost Pond range in Northern Maine, around the Chesuncook Dome. Brachiopods everywhere, but this one is odd. Coral or something? It has a little depth to it, and graduates deeper towards the center.
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Found this on my last trip to the quarry just northeast of Rockwood. Barring an unexpected snow melt it will be the last for the season at least. It's thought (by me) to represent a marine delta environment. The quarry is likely to be in the Tomhegan formation. Seeing the photos makes me think the shapes are probably all trace fossils. But what would explain all the variation ?
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I am the president of the Oxford County Mineral and Gem Association, but I am at least as interested in fossils as minerals. Maine is of course not known for fossils but there are some in the north. After living here nearly eight years, my wife and I finally ventured in that direction to see what we could find. The attached file was prepared for the OCM&GA newsletter. Hope you enjoy. Tom Hoffelder A FALL FOSSIL TRIP TO THE RIP.pdf
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- maine
- ripogenus formation
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Found in a gravel pit on the west side of Moosehead lake, Maine. Likely Devonian (some lower) marine. Conularid congregation ? Concretion ?
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I have been spreading's and shaping some gravel on a road lately. This morning I noticed a few stray stones that needed to be raked away. Seeing that I had just roped down a load of brush over the rake, I decided to just pick the largest few by hand. This caught my eye as I reached for the first one. Am I crazy, or is this a piece of a mastodon tooth ?
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In a piece of suspected turbidite from a local, Moosehead Lake, Maine gravel pit, I found this small fossil. Most of the formations in the area that have this look seem to be Silurian, but there are also Devonian rocks around. There were pockets of crinoid pieces in the same rock. I guess it could be a tabulate coral, but somehow the look is just wrong. Conularid maybe ?
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