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Showing results for tags 'paleozoic'.
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Maybe 6-7 years ago, I was at a local gem/mineral show. There was really just one dealer with a variety of fossils. it was a mix of what was left of a family collection that he had bought plus other stuff he picked up. He had lowered the price on whatever hadn't sold at the previous show. He had several Mazon Creek specimens - mostly small "ferns" in nodules plus a weird arthropod-looking thing. I had hardly any Mazon Creek stuff other than what I think is a Paleoxyris so I asked him what he would take for the group. It was super-cheap so I bought the pile. I thought it was cool that I got both halves as it makes it a more interesting display piece. The nodule is about 2 1/2 inches (58mm) long It was labelled simply as "Will County, IL cone" so I was left to assume it's a Mazon Creek piece just out of what it looks like. is it a cone? If so, what plant?. If not, what is it? I have an older reference for the plants of the deposit, "Guide to Pennsylvanian Fossil Plants of Illinois" by james R. Jennings but it's buried in a box somewhere and may be outdated. I'll still try to dig that out just to see what it says. I request the opinions of the "Mazon Creek regulars," the names I see pop up when the subject of the fauna and flora comes up, plus anyone else with an interest. @RCFossils @Nimravis, @deutscheben, @connorp Thanks, Jess
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- carboniferous
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States (in the U.S.) Where Trilobites Have and have not been Found
Top Trilo posted a topic in General Fossil Discussion
I did lots of online searching on which states trilobites have and haven't been found in, and compiled this. Its not as straight forward as you might think. Green means trilobites have been found in that state on the surface and are native to that area. Yellow means technically a trilobite has been found there but was found below the surface or the rocks are not native to the state. Red means no trilobite has ever been found in the state except for when humans have transported them there. Green: Alaska, Alabama, Alaska, Arizona, Arkansas, California, Colorado, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming Yellow: Florida, Louisiana, North Dakota Red: Connecticut, Delaware, Hawaii. No trilobites have been found in these states. The only trilobites in Florida and North Dakota came from cores that came from very far below the surface. Louisiana has trilobites from gravel that were transported via rivers from the Tennessee region. I have found very little references on trilobites coming from Oregon and Mississippi but have heard they exist. As far as Washington DC goes, I haven't seen anything that has said a trilobite has been found there but there are Paleozoic rocks at the surface according to macrostrat and trilobites have been found not too far away so I left it grey. Does anyone see anything incorrect with the above information? Before I undertook this task I knew trilobites were widespread but not this widespread. Trilobites are everywhere. I thought I'd share with the group.- 28 replies
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The 1st few may be the strangest rocks I have found. Appreciate any input. Thanks! Rock 5Rock 6 & 7: could these be fossilized tree roots?Rock 7 - external surface Rock 7 - close up of internal side (smooth) side Are the following specimens too weather worn to make a general ID? I know they are pebble-ish, but on some, there are potentially ribs (very worn), etc. I’m wondering about echinoids, ostracods, possible small brachiopods. Potential bivalve?
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- brachiopod
- echinoids
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- arthropod
- arthropoda
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Found in Crane Hill, AL (Carboniferous) Could the (presumed) burrows be part of an Asterosoma sp? Thanks for looking
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- alabama
- asterosoma
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Hello, I am hoping for some input regarding some recent rock finds in an area recently exposed after heavy rains & flooding. I will probably split them up over a couple of posts. Appreciate any help in understanding these rocks. Location: Vestavia Hills, AL Paleozoic (from Ordovician to Pennsylvanian) Rock 1: Object just left of center- Bivalve? Trilobite? Rock 1: dark areas are moss - creating a bit of an optical illusion in the photo. Rock 1: close up of area on top right of rock 1, Shiny brown with white outline with some type of inclusion. Rock 1: close up of brown shiny area with white outline on front side. Resin? Rock 2: Weathered Bivalve? Rock 2: Different viewRock 2Rock 2: Backside Rock 3: could this be part of a trilobite?Rock 3Rock 3Rock 1: sorry I can’t figure out how to move photo to the rest of the photo group
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- criniod
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Found these two fossils? In some limestone brickwork. What are they?
SilurianSalamander posted a topic in Fossil ID
One is pyritized and I have no clue what it is. The other I’m thinking is a plant? Found alongside loads of crinoids -
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- armored fish
- bone
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I’m legitimately lost as to what this could be. Devonian, Milwaukee formation. Fish tooth plate?
SilurianSalamander posted a topic in Fossil ID
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- acid prep
- armored fish
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Not just teeth and shells: my fossil collection also includes trilobites, the real protagonists of the Palaeozoic era. The first is a beautiful specimen of Morocops ovatus. Detail of the cephalon area:
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- assemblage
- brachipod
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Hi! Looking for help with IDs & also What is this type of fossil called (counter-impression? cast?). Specimen from Crane Hill, Alabama. Thanks for looking Pics 1-plate overview- several potential invertebrates? 2- Potential invertebrate? Some of my newbie guesses: Trilobite (side view) Eurypterid- can’t find definitive info about if locale only had the giant type Crinoid (eg saggital view) Bryzoan Gooseneck barnacle- not sure when these appeared 3- same critter, different angle 4-other invertebrates? 5-stellate shaped imprint? 6-another area of plate showing black ‘spots’ 7-black ‘spots’ look angular, maybe cubic) on high power. No idea if or how this helps, but I wanted to see if it was mold (seems less likely). Included pic for fun (apologies for the quality).
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- echinoderm
- echonoid
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Found last week in small stream in my yard south of Bham, AL which contains mainly early/mid Paleozoic era and potentially some late. This specimen resembles a crab fossil specimen from AL, but the time period doesn’t match up. Encyclopedia of AL Thus, what could it be? IMO, does not resemble the pics I find for Eurypterus pinchers. Another possibility is that it could have been mixed in with landscape river rocks rocks uphill from the stream?
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- claw id
- eurypterus
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I saw this chunk on a sales table at the recent Rendezvous of BC rockhound clubs here on the Island. Had to have it, though I keep telling myself to avoid fossils with no provenance. Anyone recognize it or have any hunches as to ID and especially location of origin? I guess somewhere on the eastern half of the continent... It appears to be a mix of cherty and crystallized composition. Whoever owned it before didn't treat it very kindly (lapidary types)... Apparently there once was a label of some sort glued to the top, and the rough saw cut which I hope to flatten better and polish someday.
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Found in yard after heavy rain storm. The last photo is prior to cleaning off thick clay -like coating. I may have overdone it. Thanks for looking:)
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Did I find my first cephalopod(s)? Last one could be a crinoid
SilurianSalamander posted a topic in Fossil ID
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- cephalopod?
- cephalpod
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Found this fossil in an agate of unknown age from a gravel pit ...
SilurianSalamander posted a topic in Fossil ID
I think it looks shockingly similar to charnia. Maybe a cephalopod, snail, or plant? What could it be? -
Went to the local gravel pit. Walked away with this gorgeous gastropod and a beautiful bryozoan in jasper. Will be returning
SilurianSalamander posted a topic in Fossil Hunting Trips