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Showing results for tags 'ordovician'.
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This past Saturday was cold and windy in middle Tennessee, with occasional sleet and snow showers. I decided to do something other than hunt fossils due to the weather. However, by late in the day, the wind had died down and skies were clearing, so I decided to stop at a road cut on the way home. This cut exposes about 25 ft of the lower Lebanon Limestone, Ordovician. The Lebanon is rich in fossils, often with excellent detail, but the thin limestone layers can be extremely hard. This usually results in the fossils weathering faster than the rock, so the best way to find something nice, is if it's inverted. As always, I'm looking for trilobites, and the Lebanon has a diverse assemblage, but finding complete, articulated specimens is very rare. After several years of sporadic hunting, I have never found a single complete trilobite in the Lebanon, but I have seen a few, so they do exist. The sun was was getting low, and the light was not great, but I had at least 30 minutes to check out the cut. I had checked this same cut a few years ago, but only briefly, late in the day, after hunting other cuts nearby, so my tired eyes had not seen much. I recently learned that some rare trilobites had been found at this same cut, so I really wanted to give it a better look. Just 10 minutes into my hunt, and only 50 ft from the car, I glanced up at the top of the talus pile and immediately spotted this Gabriceraurus! I appears to be complete, although the pygidium is not visible.
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- ordovician
- tennessee
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We temporarily melted our snow enough for me to get out last week for a short fossil hunt. But yesterday, 9" of snow put further hunts on hold. I had to stick with south facing slopes due to the frost in the ground. My goal was to look for a mixed bag of cephalopods, gastropods, and trilobites. Success was had with one swing of the hammer!!!! Two cephalopods, two trilobites, six gastropods and one brachiopod all in one rock!
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From the album: Trilobites
Paraceraurus macrophthalmus Age: 463 Ma, Middle Ordovician Locality: Vilpovitsy quarry, St.Petersburg region, Russia Trilobite (cm): 9.6 x 6.0 x 1.0 Stone (cm): 17.5 x 12.5 x 6.5© Shuo Wang
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From the album: Trilobites
Paraceraurus macrophthalmus Age: 463 Ma, Middle Ordovician Locality: Vilpovitsy quarry, St.Petersburg region, Russia Trilobite (cm): 9.6 x 6.0 x 1.0 Stone (cm): 17.5 x 12.5 x 6.5© Shuo Wang
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Paraceraurus macrophthalmus. Age: 463 Ma, Middle Ordovician Locality: Vilpovitsy quarry, St. Petersburg region, Russia Trilobite (cm): 9.6 x 6.0 x 1.0 Stone (cm): 17.5 x 12.5 x 6.5
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Dear TFF members, As some of you may already know, I have been working on my science fair project concerning the Trilobite Pseudogygites latimarginatus for several months. This science fair project has been awarded a position in the Ottawa Regional Science Fair held at Carleton University this week. Your help has been instrumental in my success, and my appreciation cannot be expressed in words. As one way of thanking you all, I am inviting anyone on the forum who will be in or near Ottawa at the time to attend the fair. My project will be open to the public this Friday, April 6th, from 2:00 pm - 4:00 pm, and again this Saturday, April 7th, from 9:00 am - 11:30 am. It is titled, "The Impact of Environment on the Biodiversity of Pseudogygites latimarginatus." My project's number is 1101. I will also have some of my most prized fossils on display, as well as some edible specimens, for the Trilobite enthusiasts! I am not asking for anyone to go out of their way to see my project, this is just a simple invitation. Everyone is welcome.
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- billings formation
- billings shale
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The full name is Asaphus expansus gracilis
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From the album: Billings Shale
A P. latimarginatus pygidium from the Billings formation near St. Laurent, Ottawa. -
From the album: Billings Shale
A partially pyritized P. latimarginatus pygidium from the Billings formation near St. Laurent, Ottawa. -
Location: SE Portage County, Central Wisconsin, USA. Geology: South Western advance of Green Bay Glacial Lobe. Former Glacial Lake Oshkosh. Niagara Escarpment Debris. My land. Ordovician onward. Reminds me of Ordovician Halysites Coral-Chain Coral, but with a lot of wear. In some places, the chain is partially visible. When a light is held to the cavity edges shown on the first two photos, the walls are very translucent. Medium amber color. I saw the more solid edge and picked it up. Was very pleased when I turned it over, even though it was full of dirt. Like most of the fossils, I find, this one has received a lot of trauma. Possibly a victim of glacier which went through the Niagara Escarpment about 25,000 years ago. Most of my finds have partial or full crystal replacement for the coral stems. Size: 11 cm long by 10 cm wide by 9 cm thick at maximum points. All comments appreciated. Thank you. lace coral 1a lace coral 1c lace coral 2 lace coral 2 ud 2d
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Here's a mystery fossil from the Lower Ordovician Fillmore Formation of Utah. My initial impression is it must be a graptolite, but I've never seen any graptolites from this formation with this structure and I can't find any graptolites in my research that look like this. The other thing that's throwing me off is the "rod" running down the middle is preserved actually fairly 3d where every graptolite I've seen is preserved as just a flat film. For reference the specimen is about 2" tall including the middle section still covered in matrix. Any ideas?
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Well articulated with very minor restoration. Full name: Asaphus expansus robustus
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Hello, Is the Caid El Rami Placoparia's species (like the one at attachment) already known? Thanks in advance for your opinions.
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I chose to draw another rare Trilobite from New York. Hypodicranotus striatulus is an "alien" looking bug with streamlined features. It is Ordovician in age and hails from the Rust-Walcott quarry in mid- state New York. The picture of the real fossil is from the Harvard Museum of Comparative Zoology.
Improved.thumb.JPG.3d1ba2ae6f86d5c8cb04c38aa8d693f8.JPG)
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- hypodicranotus
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Additional images show detail of holochroal eyes, pleurae, and pygidium. Specimen is fully prone.
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- asaphid
- ordovician
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I found this in an old quarry at the foot of the Old Man of Coniston, Cumbria, England about 30 years back. It's from the Ashgill Shales, so is very uppermost Hirnantian, Upper Ordovician. It was a dome shape but broke during extraction,to reveal a smaller dome within the dome and so on, but is built up of layers and layers though the 'tubes' running through it also continue upwards and outwards from the base. Is it Fisherites ? It's about 3.5 cm in diameter but was a little bit bigger. Thanks for any help. Top : Side : Side and base : Base :
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Location: SE Portage County, Central Wisconsin, USA. Geology: South Western advance of Green Bay Glacial Lobe. Former Glacial Lake Oshkosh. Niagara Escarpment Debris. My land. Ordovician onward. Trying to learn, but am confused. I tentatively identified the below specimen as a Honeycomb coral, based on info from the below and input from local “experts”. None are Paleontologists, but one is a Natural History Museum Director. Begin quote: Favositid tabulates: Honeycomb corals The favositid corals are quite common. They usually formed large colonies. The corallite is prismatic in shape, resembling honeycombs. Favositids have mural pores, tiny holes in the wall of the skeleton, which connect different corallites. These pores are distributed in characteristic patterns and numbers, which are useful for distinguishing the various types of favositids. Favositids lived from the Ordovician to the Permian, at which time they became extinct. They are most abundant in middle Silurian to lower Devonian rock. Favosites is the most common fossil coral in Wisconsin. https://wgnhs.uwex.edu/wisconsin-geology/fossils-of-wisconsin/coral-gallery/corals/ Wisconsin Geological and Natural History Survey, UW Extension The confusing part is that some surfaces of this specimen show no pattern or regular form. Just like most of my finds. Are there any clues to indicate a rock of this structure may be a coral? Other than cutting it open? I have about 50 like this, but only two others show the typical pattern. The rest just have the “circles” on all sides. All are basically the same composition of material, but colors vary. All have inclusions of crystals. My vision is limited, so I only know what I have found after I wash it and look under a lighted magnifier with a loop. Photographing helps a lot as well. I just go on shape and colors when picking up. Then use a small hand held magnifying glass to examine. Sometimes wash off with a little water first. My son in law, who has (almost) a geology minor from local University, is amazed at what the glaciers “dumped” on my land. Note that a large part of the classes were related to local fossils, due to the abundance of them. Please let me know if my ID is correct, and any pointers for identifying specimens which do not show the structure, only the “circles” or “cavities”. Thank you. 1 2 3 4 5 6 7
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Stopped by a road cut this past Sunday to pick up some hash plates I found the previous weekend, but had to leave behind. The cut exposes a large section of the upper Carter's limestone and the Curdsville limestone member of the Hermitage formation, middle Ordovician. This is not far from where I found the nice 3D Isotelus a few weeks back. Within 5 minutes after I arrived, I looked down and spotted this huge enrolled, but very weathered Isotelus. Most of the lower portions were missing or very damaged. It is 5.5 inches (14 cm) wide, so if stretched out prone, it would have been 8-9 inches! While it's not in very good condition, it still shows the potential of this strata in the area. That's a big honking trilobite!
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Attention TFF members! I'm posting this to bring you an extremely important announcement! (For Me) For the past few months, I have been posting topics regarding Ottawa fossils and the Trilobite Pseudogygites latimarginatus. I have been doing this for research and information for my grade 8 science fair project. This experiment involved the relationship between Ordovician sedimentation and the average lengths of Pseudogygites latimarginatus. The title was, "The impact of Environment on the Biodiversity of Pseudogygites latimarginatus." Though, other possible titles included, "Another one Trilo-Bites the Dust," "Trilo-Bite Sized Science," "Don't Trilo-Bite the Hand that Feeds You," and "Trilo-Bite Me!" Last week, I fully assembled the presentation board and all other related displays. I presented my project to three judges (including professors and students from Carleton University) in addition to many other people who passed by. The following day, my school held an assembly which would announce the top 5 winners of the grade 8 science fair. After much delay and suspense on my part, it was announced that I had won first place in my grade! This means that I will get the opportunity to compete in the Ontario regional science fair this April! It turns out that one of the reasons why I won first place was because the teachers who were doing research on my project's nature (name pronunciation) stumbled upon my many posts on this website! I will continue to make posts on the forum. I think that I should give acknowledgement to all the TFF members who helped me achieve my goal, or contributed in any way! This includes all the people who helped identify my mystery fossils and gave fossil hunting advice and locations during these past few months. These are in no particular order. Thank you all! Acknowledgements: Kane Ludwiga Tidgy's Dad Fossildude19 WhodamanHD Manticocerasman Rockwood Auspex ynot abyssunder Arizona Chris erose Herb old bones snolly50 fossilDAWG caldigger Max-fossils Bobby Rico RyanDye
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I made another score on eBay! This time I got the winning bid on a partial echinoderm plate from Simcoe County, Ontario from the Upper Bobcaygeon formation. One of the Pleurocystites has a partial Isorophusella incondita edrioasteroid on it which I'll try to take a picture soon. This is my second specimen I have ever obtained from this locality.
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Found this in Grant county, WI. Partial eye stalk? Asaphus? Any ideas, Thanks
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From the album: Trilobites
Taxonomy: Declivolithus titan Age: Ordovician Location: Morocco Source: Purchased -
From the album: Northern's inverts
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