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Showing results for tags 'graptolite'.
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Hi all, I haven’t been here in a while, but I still wanted to share some fantastic finds from this summer. As soon as I returned from Newfoundland, I hit the ground running, and now I finally have a chance to relax with a hectic semester coming to a close. For some background, my undergraduate thesis looks at the structures and stratigraphy of a small peninsula off the western coast of Newfoundland called Cow Head. On our long trek up there, we stopped at Green Point, a global geologic benchmark for the boundary between the Cambrian and Ordovician. The geologic features here
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Locally, graptolites are very common in the Maquoketa/ Ordovician rock. They present themselves as 2 dimensional creatures on certain bedding planes. Below the Maquoketa is our Galena. It has graptolites but uncommon. Again, they present themselves as 2 dimensional. The "unknown" specimen from the Galena, presented today, is obviously 3 dimensional and I venture a guess that it is a Graptolite. But I thought I would seek opinions in that I have seen thousands of local graptolites but never one that is 3 dimensional. Could it be something else??
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Hoooooooooooorrrrrrrrrrrraaaaaaayyyyyyyyyyy!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Here we are at last, into Adam's Silurian. Thanks for looking. First up is the Lower Silurian or Llandovery and I begin with a problem. I posted this one incorrectly in Adam's Ordovician as it had got it's label muddled up with an Ordovician Favosites I had that has vanished in the move here, but is being replaced by kind forum member @Herb Anyway, this, I remember now I've found the correct label, is from the greenish Browgill Formation, part of the Stockdale Group from a cutting near Skelg
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- leptostophiidae
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A nice Dictyonema flabelliforme dendroid graptolite from Oslo Fields in Norway. It's Tremadoc, Lower Ordovician in age and is thus maybe around 480 mya. Another angle :
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Here's a rock I found on my trip yesterday. The texture looks like just another scratch, but the shaping of it likes too precise and symmetrical to be a coincidence. Is it actually something or am I seeing things?
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These are graptolites I dug out of an Athens Shale outcrop. They're fragile, so I am questioning whether it is better to leave them be, or seal them somehow? And if so, the best substance to get the job done. Thanks in advance. I have trilobites in shale too, so im hoping I can extrapolate from the answer here.
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At the end of August this year I travelled to Larvik in southern Norway to visit "Norges stein og mineralmesse". On my drive from Nässjö in Småland to Strömstad in Bohuslän i took a short detour to visit Taberg. Taberg is a huge iron ore mountain consisting of Titanomagnetite-Ovlivinite which is only found in Taberg, Sweden and Rhode island, U.S.A. The ore body was created 1.2 billion years ago and has survived both a number of ice ages as well as several attempts of mining. Today the mountain is protected by law and during winter the old mine shafts house
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This past weekend I had to cancel a collecting trip due to ominous weather, so I instead made an impromptu trip to northern Kentucky to do some Ordovician collecting for a couple days. I really love this area and would spend a week down there if I could. This trip I decided to focus on the Kope and Fairview formations, two of the older formations in the greater Cincinnati area. The first day was mostly driving and not much collecting due to rain. But I did briefly stop at a spot where I found a pocket of Ectenocrinus crinoids on my last trip. I checked to see if any more had weathe
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I’m probably getting close to my question limit for today, yet I can’t stop thinking about the pattern on the rocks. Are they trace fossils or just pretty iron staining? I’m headed back to where I collected these (Crane Hill, AL) tomorrow & it would be nice to be able to explain to my nieces. I was thinking about Graptolites, though I can’t match up the patterns to those I see in my books. Google search of pic 1/2 pulls up Stromatolites. Pic 3 is the back of pic 1/2 pic 4 includes more examples Thanks for looking.
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From the Atrasado Formation in San Diego Canyon, New Mexico. Took a couple of younger friends fossil hunting, and we found a good bed. This one's a real beauty. My photographic equipment is primitive and doesn't do it justice. Graptolites and something else. Not sure what the circular structures are; I don't have the equipment for proper microphotography. There is a very clear echinoderm plate elsewhere in the sample so I'm wondering if these are some kind of echinoderm. They're very clear under the loupe and obviously f
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- bryozoan
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A fossil buddy sent me these photos. His thought was trace fossils, but looking more closely, it seems to me these might be graptolites. I confess I've mostly hunted in beds well past the geological peak of graptolites and are not as familiar as I might like.
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Is this a graptolite ? It's my first one.........maybe
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Imagine working for a year in a small college science department and there was a room you vaguely knew was there but didn’t have the keys to and never saw anyone going in or out. Then one day, campus grounds workers open the door, and you inquire what is going on. You discover it is an old earth science storage room (earth science hadn’t been taught there in many years) and everything is to be discarded the next day into the dumpster to make room for some new purpose. It’s a room about 15 feet by 20feet packed with boxes on shelves filling the space up to the ceiling. It is a dusty disordered
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I wonder if this fossile in a shale is a graptolite or a nautiloid. The length is about 3cm, age middle ordovician, in the Elnes formation. The place has many graptolites. Pict. 1 Pict. 2 I also found this 1,5 cm long specimen, which seems to be a nautiloid?
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Hello guys! Initially I was thinking about roots of some plants, then I realized there are no plants during this time period. It's Ordovician. Found between Montreal and Laval, Lac du Preries. Could this be Hallucigenia ? N.2 N.4 N.6 N.7 N.8
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This graptolite is of Silurian age and is from the Rochester Shale, near Buffalo, NY. I hope someone knowledgeable about Paleozoic sea floor bric-a-brac can tell me what species this is. The main cucumber shaped colony is about 12 cm long. I'm guessing that this is in the genus Dictyonema, maybe Dictyonema crassibasale. but I'm no expert on this.
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- graptolite
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I found this small specimen in the Platteville Formation (Middle Ordovician) in Wisconsin. My first reaction was that it might be a graptolite fragment, especially as it looks to be preserved as a carbonaceous impression. However, I would appreciate a second opinion. Thanks!
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Yesterday I hunted for about 6 hours in Breckenridge Texas on my way back to Lubbock. Although I found no trilobites, I’m certainly glad I went. I found this graptolite and was wondering if anyone could help with further identifying, identified as graptolite because of the small “hieroglyphics” on the shell. Love this thing!!
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Hello all. I was wondering if anyone would perhaps known enough about graptolites to possibly be able to tell me a little bit more about the specimen pictured (if the picture allows, what species perhaps)? I found it years ago when collecting fossils on Manitoulin Island (about 1.30h from where I live in Northern Ontario) if this helps at all.
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I enjoyed an autumn drive through the rusty-red-colored oak forests that blanket the scenic mountains of northeast West Virginia. Two inactive quarries enticed me to prospect a bit. In the first quarry of Ordovician age shaly limestone was this graptolites plate .... perhaps Climacograptus? In the second quarry of early Devonian age massive limestone was this crinoid column base with the attached holdfast. Both specimen photos are as found.
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I was recently reorganizing my fossil collection and thought I would share some pieces I collected during Paleontology field trips in undergrad at Alabama. I'm glad I took thorough notes at the time! The demopolis chalk is a popular formation for finding Exogyra/ostrea/pycnodonte shells and shark teeth. We visited a site in Tupelo, MS many times for surface collecting. Some of the cool pieces I found were many fragments of a mosasaur jaw (top pic, top 2 slots), a Squalicorax kaupi tooth, a scyliorhinus(?) tooth, bony fish vertebrae, and bony fish teeth. I was told the dark fossils
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- graptolite
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These two finds are stumping me a bit. Both are from the Maquoketa Fm (Upper Ordovician) of Iowa. The first one initially struck me as a 3D graptolite, but it could be a crinoid stem. I couldn't get a good photo of the cross section, but it is rectangular.
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Last week I visited a silurian site and found this stone. I wonder which kind of animals this is? And which kind of stone, which is blue inside with a relative thin layer of white material on the surface. The animals are "printed" on the surface. Martin
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Hello Found some I believe to be Graptolites and would like to be able to ID them better in the field. Is there a guide available or even a good book anyone might recommend for this. Attached pictures are what I think are graptolites but would like to verify. Surface finds Thank you all for the help Tom
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This was found in Maine, but was likely brought in as crushed rock from Quebec by a Canadian railroad company. Dendroid graptolite is my opening guess.
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