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Showing results for tags 'Hamilton Group'.
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I recently went to Penn Dixie for the first time and was not disappointed. Our tour guide first showed us the youngest rocks, then the pyrite. Here I found a tiny juvenile Tornoceras, Bactrites, and out guide showed us that individual septum can be found (see this post). I also found a fragment of a non-pyritized tiny Eldredgeops thorax. I found what HynerpetonHunter says is worm coprolites, and a few tiny brachiopods. Then, we went to the place where phosphate can be found. After that, we stayed a little at the place where fossils from the oldest layer were deposited in the soil, and I found a Naticonema gastropod, among the rarest fossils at the site! There were lots of brachiopods, crinoids, and rugose corals here. We then found some more corals, brachiopods, and trilobites at the most recent Dig with the Experts piles that were turned up for collecting. We walked towards the stream and on the other side found many bryozoans and coral (this time Favosites). I dropped my bucket of fossils but was able to find most of its contents again. We went to a place nicknamed "Crinoid Heaven", because of the sheer amount of crinoid columnals that can be found there. after that, we went to the original Dig with the Experts that was unearthed in 1993 (there wasn't much). After this, we went to where some trilobites are, but not as much as the recent Dig with the Experts site, so we went back. By this time our tour was over and we simply filled bucket after bucket of fossils. I found some Bellacartwrightia, Greenops, too many corals, and many, many Eldredgeops. I agree with Clary and Wandersee's (2011) rating of Penn Dixie as the top fossil park in the U.S. Below are some pictures of some of my favorite finds. First, some Eldredgeops. I prepped the top right cephalon with some dental tools. These can be found abundantly, but here are some of my best. ======================================= Some Bellacartwrightia. These are uncommon Asteropygines that are sometimes confused with Greenops. To prove that this cephalon belongs to Bellacartwrightia, look at its cephalon posterior border furrow - it continues down the genal spine, while it ends at the base of Greenops's. Directly above it is a juvenile's pygidium. Some more Bellacartwrightia pygidiums - on the same rock but on different sides. =================================================== A Greenops cephalon - the cephalon posterior border furrow ends at the base of the genal spine and does not deflect backwards. An enrolled Greenops in the matrix. Since Asteropygines have such this cuticles, I am going to wait to prep this one. Note: the scale bar is equivalent to 2 mm, not 1. ============================================= Now for the Gastropod! This is Naticonema, dorsal and ventral. ============================================ Mucrospirifer. ======================================= Placoderm bone? I am not that good with bones and any help would be appreciated on this one. I know more of these have been turning up lately, or at least being recognized. Penn Dixie was certainly worth the long drive and I very highly recommend it!
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From the album: Nautiloid’s phyllocarid collection
This is a nice 3D example of a Rhinocaris carapace, which was found by me on May 14 at a Middle Devonian site in Central NY© Owen Yonkin 2022
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Other side of the complete Rhinocaris carapace
Nautiloid posted a gallery image in Member Collections
From the album: Nautiloid’s phyllocarid collection
© Owen Yonkin 2022
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From the album: Nautiloid’s phyllocarid collection
This is a great specimen of Rhinocaris columbina which I collected a couple summers ago. Both sides of the carapace are there as well as the majority of the telson, which is tucked around the underside of the rock.© Owen Yonkin 2022
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From the album: Nautiloid’s phyllocarid collection
© Owen Yonkin 2022
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From the album: Nautiloid’s phyllocarid collection
This beautiful near-complete specimen was collected by me a couple summers ago at an exposure of the Middle Devonian hamilton group in Central NY.© Owen Yonkin 2022
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From the album: Nautiloid’s phyllocarid collection
This specimen is a partial valve and a partial telson. It was collected by me on May 14 at an exposure of the Middle Devonian Hamilton Group in Central NY.© Owen Yonkin 2022
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From the album: Nautiloid’s Trilobite Collection
Another view of the same Dipleura showing the head tilted over the front of the rock.© Owen Yonkin 2022
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From the album: Nautiloid’s Trilobite Collection
Collected on 5/13/2022 in Central New York Probably Moscow Formation Hamilton Group, Middle Devonian© Owen Yonkin 2022
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From the album: Fossildude's Middle Devonian Fossils
Phestia brevirostra bivalve. Windom Shale Member of the Moscow Formation, Hamilton Group, Middle Devonian (Givetian) Deep Springs Road Quarry, Earlsville, NY.© 2022 T. Jones
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From the album: Fossildude's Middle Devonian Fossils
Retispira leda gastropod with Paleschara incrustans encrusting bryozoan attached. Plate also has a Cypricardella bellistrata bivalve and Craniops hamiltonae brachiopod nearby. Windom Shale Member of the Moscow Formation, Hamilton Group, Middle Devonian (Givetian) Deep Springs Road Quarry, Earlsville, NY.© 2022 T. Jones
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I've been looking at these for sometime and am stumped as to what they may be. Found in Lansing NY. First up, photo's labeled #1 and #2 (hourglass shapes). I believe the matrix to be Tully Limestone. I have the scale written on one photo as 1.5 cm x 7 cm. They are of similar size. I wondered if they could be orthocone or crinoid but am unable to find any information or photos to compare them to as they are weathered. Both have the same somewhat zig zagging cross hatching patterns. Lastly, (#3) Believed to also be in Tully Limestone. I found what appears to be some type of a shell (2 cm x 3 cm) but it's shape doesn't resemble any of the gastropods, brachiopods, or bivalves in my area and I can't see any hinge. It appears that the outer shell has worn off and I think I'm looking at the internal mold? I don't want to try and prep it to reveal what may be hiding without any clue as to what it is. Thank you in advance
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Tiny Strophomenid Brachiopod Preserved in Pyrite from DSR
Jeffrey P posted a gallery image in Member Collections
From the album: Middle Devonian
Rhyssochonetes aurora Strophomenid Brachiopod Preserved in Pyrite (just over 1/4 inch in width) Middle Devonian Moscow Formation Windom Shale Hamilton Group Deep Springs Road Quarry Earlville, N.Y.- 2 comments
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Hi all! Please tell me this is more than a concretion! Edit to add location: Found in Lansing, NY. The matrix is a dark grey/black shale that breaks under it's own weight when I lift pieces and it breaks off into big chunks unlike thinner layered shale also in the area. I think I see crinoid stems and wonder if there are other fossils (Hallotheca acils ?) under a shallow layer of sediment making the cone shape appear to have rounded sides or is this something completely different (I think I've been finding nice molds of Hallotheca acils in close proximity to where I found this guy today). I hope to return tomorrow and find the other half to try and glean more information from the molded half. It was the only fossil in this piece of stone but I found two species of Rugosa and multiple species of Brachiopods in similar stones lying within a foot of it. It's delicate and I've wrapped it in wet paper towels and placed in a shallow dish with water. The entire item measures 2cm wide x 8 cm long. Thank you for your time
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HELP! How do I stabilize this coral? Found hours ago and it's falling apart!
Plantgrogu posted a topic in Fossil Preparation
I have an urgent request! I found this beautiful coral today (my very first of this type!) in ice cold water. It was stable and not flaking when I picked it up. After a couple hours of drying at room temperature, it's become extremely brittle and is falling apart. I've placed it in cold, filtered water, and placed it in the refrigerator hoping to stabilize it until I can find out how to possibly treat it. Is what I've done the right thing? I have no idea what the matrix is, I suspect a type of shale, maybe limestone but can't handle it at all right now. Thank you! Sorry about the bad photos, I'm freaking out and was in a hurry
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Found near Cayuga Lake on the bank of a tributary. The raised spherical type shapes measure 3 - 4 mm in diameter and can be seen on several sides of the stone. I'm not sure what the matrix is but think it's a type of shale. There are so many types of shale in my area and I have yet to learn how to discern between them. This stone is very hard, dark grey (not quite black) and cannot be fragmented/chipped easily like others I find that can be crumbled in my bare hands. Could this be a coral? My field guide for this area doesn't show any corals that resemble this. I love this one!
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I don't know where to start to ID this one. Fossil or something else?
Plantgrogu posted a topic in Fossil ID
I've come across several similar shapes in pieces of shale and could use some help with ID. All have a rounded end and in one specimen I see a lot of tiny round indentations to evenly spaced to be random or weathering, in the bulbous round end. Found in the Finger Lakes Region, NY. Matrix is shale in the Hamilton group and in natural light the fossils have a silver sheen to them. (Quite striking) When I uncovered one sample, shown in pictures 2 - 4, a dark red solution drained from around the fossil when it came in contact with water. Can you point me in the right direction? Picture one is a different sample than in pictures 2 - 4.
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From the album: Fossildude's Middle Devonian Fossils
Crushed cephalon of what I am assuming is a Pseudodechenella trilobite. Found in July, 2020. Smoke Creek, West Seneca, NY. Hamilton Group Middle Devonian© 2021 Tim Jones
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From the album: Nautiloid’s Trilobite Collection
Asteropygine sp. Middle Devonian Hamilton Group Upper Ludlowville Formation? Madison County, NY I am unsure about what to classify this specimen as. It has eyes more similar to a Bellacartwrightia (7 lenses in some of the columns), yet its body is more like that of a Greenops (no axial nodes and shorter, more rounded pygidial lappets).© Owen Yonkin 2021
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From the album: Nautiloid’s Trilobite Collection
Greenops sp. Middle Devonian Hamilton Group Upper Ludlowville Formation? Madison County, NY© Owen Yonkin 2021
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From the album: Nautiloid’s Trilobite Collection
Eldredgeops rana Middle Devonian Hamilton Group Moscow Formation Penn Dixie Quarry Blasdell, NY© Owen Yonkin 2021
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Goniophora from Geer Road Quarry, Madison County, N.Y.
Jeffrey P posted a gallery image in Member Collections
From the album: Middle Devonian
Goniophora hamiltonensis Paleoheterodont Bivalve Middle Devonian Upper Ludlowville Formation Hamilton Group Geer Road Quarry Eaton, N.Y. -
Middle Devonian Crinoid Crown from Morrisville, N.Y.
Jeffrey P posted a gallery image in Member Collections
From the album: Middle Devonian
Arthacantha carpenteri Crinoid Crown Middle Devonian Oatkacreek Formation Mottville Member Hamilton Group Morrisville, N.Y. Prepared by Ptychodus04. Thanks Kris. -
I found this in a creek...near Cayuga Lake, Middle Devonian, Hamilton Group, Limestone. It really doesn't look like a Coral...so, am not sure. It seems like I've seen this on one of the other forums. Each are "ringed" and those rings follow down through the rock...you can see this in the large one. Any help as always is greatly appreciated. Thanks Greg
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From the album: Fossildude's Middle Devonian Fossils
Greenops sp. Middle Devonian, Hamilton Group, Upper Ludlowville Formation . Geer Road Quarry, Lebanon, NY.© 2021 Tim Jones
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