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According to the seller, this is Hexagonaria from Manchester, Iowa. I can only find pictures of two of the ten Hexagonaria species H. percarinata (aka Petoskey stone) and H. mirabilis. It looks more like H. mirabilis than H percarinata, but the picture isn't great. My fossil also looks like Lithostrotionella and Acrocyathus floriformis. Any way to be sure what I have?
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I purchased this from a shop in Iowa that said it was a glacial erratic. Does anyone have any idea on what type of coral it is?
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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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- amplexopora
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I’m about to head out. I should be there in about 90 minutes. This should be a good trip because it’s the very beginning of the fossil hunting season in this area., there have been a number of snows and thaws during the winter, very few people have probably picked over what’s been exposed over the winter yet, not too much weedy overgrowth, and the weather in the mid 60s, can’t get much better than that
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- fossil hunting
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This is an Iowa sand bar find. The (large) molars seem to be more rectangular than other more square equus teeth images I have seen. Also, there are only four teeth with one not yet emerged. I believe this indicates that this jaw is from a young animal with only having the deciduous "milk" teeth. Any help zeroing in on a specific species would be appreciated!
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Hello Folks! I have an Iowa river find. I am fairly certain this is a wolf vertebrae fossil. This was found in an area rich in Pleistocene Era fossils. What I do not know is how to distinguish between a Gray Wolf and Dire Wolf vertebrae. The Dire Wolf vertebrae should be a bit larger than a Gray Wolf vertebrae but I cannot find a source for actual dimensions. Thank for looking.
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Hello to all of you fellow rock lovers it's nice to be here and thank you for allowing me to partake in this forum
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- iowa
- newbie here
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I have recently discovered my interest in rock hounding. From my small/moderate amount of research, I am guessing that this is Stromatolite. I found it in a yard bordering a graveyard in Maquoketa, IA. I would love to know a little more about it,. It weighs right around 4 lbs. At the one end, it appears that some form of fossil had burrowed in.
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Hey Gang, Happy New Year! I'm not sure this is exactly a fossil prep question but it relates to Identifying an unknown supposed Pleistocene fossil from Iowa so here goes. I'm trying to put together a comparative collection of extant/extinct mammal inner ear bones. I've got a number of fossil fragments from a number of critters and about to work on removing a couple of petrous bones/bulla (highlighted with red arrows) from a couple of extant skulls. Ive got to cut them out of 2 extant bovid skulls/cap--see photo below: The smaller example on the left is from a sheep and the other a much larger bovid I'm assuming a cow/Bos. I am thinking I can take my dremel with a cutting bit and remove the sheep petrous bone fairly easily by removing a surrounding section thru the skull cap along the blue line i've drawn. The larger skull on the right is more stout so I'm looking for any easy/cheap ideas from Harbour freight, hacksaw ideas or other to cut the ear bones free. Perhaps the dremel will have no problem cutting thru it as well. i've seen some pretty cool dissection equipment but I'm doing this on the cheap to satisfy the curiousity of how these bones are positioned/attached and identify their components and take some photos along the way. Any simple solutions for removal are welcomed. I'm ok with up/experimenting one side as I can always work on the opposite petrosal of each. Here's an unknown petrosal that I have that I want to compare against to compare the two extant bones too. I was told it might be possibly bison from the Pleistocene of Iowa. That ID has not been confirmed Thanks! Regards, Chris
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I brought out a bag of Devonian brachiopods from the Cerro Gordo to clean up this week when I noticed this unknown in amongst the shells. At first I thought geologic but if you look close, it appears to have six sided symmetry. So is this some sort of echinoderm??
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As I went through the rocks I had collected in October from the Ordovician's Galena, likely Stewartville Formation, a SMALL gastropod popped out of a piece of matrix that was split open. After looking thorough my references, I could not place this fossil. Hence the need of your help.
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I have found a few of these mis identified fossils from the Galena/ Ordovician. A request for identification was made awhile back and I labeled them Asgadaspira evolvens based on a response given to me. Having just exposed another one, I searched for it on line and nothing came up. Did I misspell it or am I just out in left field? By the way the first one measures 8cm by 5cm.
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As the title says, this is my kind of town, excited to have collectors come and find fossils. Most of the country is neutral or negative to this hobby of mine. So it is worth putting the word out supporting a community like this. The Fossil & Prairie Park Preserve is located 1 mile west of Rockford on County Road B47. It is a fun and easy place to collect in the Cerro Gordo Member of the Lime Creek Formation, Devonian. If other cities exist that promote fossil collecting, please show us by adding to this thread.
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I dug this out of a creek bed in eastern Iowa about 9 years ago. I saw the top sticking out of the dirt. The creek bed was probably 20' down +/- a few feet. It was near another rock I dug out the same day that was just a 20lb rock of quartz. There's a couple spots that chipped off showing the white inside making me think it's just quartz. But the shape of it looks like a mushroomed bullet like it impacted the ground. I don't know a lot about how rocks are formed but I don't think quartz is ever pliable enough to form the way this thing did. A friend of mine saw it the other day and got really excited. He asked where I got the dinosaur vertebrae. I never thought about it being a vertebrae till then. When I Googled a dinosaur vertebrae it looks like it could be. I just hope I haven't been keeping a 30lb petrified turd in my living room for 9+ years. So if anyone has any ideas on what I have please feel free to let me know.
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From the album: My trilobites
a Anataphrus vigilans from Fayette Iowa.- 2 comments
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Need help identifying these two vertebrae. The first I think is a mammoth or mastodon. I’m not sure about the second but it’s much to large to be bison or horse.
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Hey there i have more fossils from the Nishnabotna River in Iowa, i'd especially like help on this rib bone, it's probably bison but what do you think?
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Help me name the outstanding fossil deposits of the midcontinent Devonian
pefty posted a topic in Questions & Answers
Crowdsourcing / help request! I'm putting together a review article for the fossil collector community on the Devonian rocks of the American midcontinent, which I've defined as the gray area on the map below plus southwest Ontario. I'm hoping to include a section in which I highlight the midcontinent fossils of greatest renown for each of a number of taxa (list below). (I purposely leave "renown" as a somewhat squishy quality open to multiple interpretations.) I would appreciate (1) your nominations of any midcontinent Devonian fossils of great renown that I have failed to capture in the list below and (2) your assistance in filling in the blanks marked with "????" Thank you! List is below. Microbes: ???? Marine algae: ???? Sponges: Formosa Reef Limestone, SW Ontario Rockport Quarry Limestone, NE Michigan ???? Corals: Widder Formation, SW Ontario Jeffersonville Limestone, S. Indiana Petoskey Limestone, NW lower Michigan Hyolithids: Arkona Formation, SW Ontario Tentaculitids: Arkona Formation, SW Ontario Conulariids: ???? Bryozoans: ???? Brachiopods: Silica Formation, NW Ohio ???? Pelecypods: Arkona Formation, SW Ontario ???? Gastropods: Rogers City Limestone, NE Michigan ???? Non-ammonoid cephalopods: ???? Ammonoid cephalopods: Arkona Formation, SW Ontario Pelecypods: Dundee Limestone, NW Ohio Arkona Formation, SW Ontario Rostroconchs: Dundee Limestone, NW Ohio Trilobites: Silica Formation, NW Ohio Arkona Formation and Widder Formation, SW Ontario Haragan and Bois d'Arc Formations, SE Oklahoma Non-ostracode crustaceans: Chagrin Shale, NE Ohio Arkona Formation and Widder Formation, SW Ontario Silica Formation, NW Ohio Echinoderms: Arkona Formation, SW Ontario Silica Formation, NW Ohio Thunder Bay Limestone, NE Michigan Graptolites: ???? Fish: Rockport Quarry Limestone, NE Michigan Columbus Limestone, central Ohio Cleveland Shale, NE Ohio Woody plants: Ohio Shale, Ohio Herbaceous plants: Grassy Creek Shale, E Missouri -
This was found on the Missouri River. It doesn’t look like anything els in my collection. Maybe it’s a baby pronghorn or a domesticated goat?
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Can anyone tell me if these skulls are modern or ice age horses? They were both found in a river in western Iowa.
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So my kids have gotten into rocks of all kinds. I’ve done some cleaning but didn’t want to go any further till I might be able to find out what this might be. to me it looks like some kind of animal with an eyeball and possibly a tooth but I’m not sure if that’s right or if it’s just a funky looking rock. Any ideas?!?
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This is a sandy rock with what looks like a little dinosaur with scales trapped within. Thanks in advance! Any help appreciated I wet the fossil in some pics. On the back you can see clearly 3 triangle toe prints. I am thinking this animal was stepped on and trapped in the mud millions of years ago, until I dug it out after a heavy rain exposed a bit.
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