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Showing results for tags 'paleozoic'.
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Anyone know anything about Californian Helicoprion fossils? I know they’ve been found in Eastern California, but that’s about it and I’d like to learn more.
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Stromatoporids, other sponges, or not a fossil? Thanks!
SilurianSalamander posted a topic in Fossil ID
All collected in gravel and beach rocks from SW Wisconsin. Thanks so much for the help! I love this community:)
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Despite weathering, I was hoping there may be enough features for an ID. My initial impression was that it could potentially be a bivalve. However, after seeing a photo of fossil sponges from the area (see last pic), I think that is a reasonable consideration as well. Thanks for looking!
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Landscaping rocks. Paleozoic.
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3 and 4 were found in the Devonian milwaukee formation.
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Genuinely lost as to what this could be. Found in Paleozoic gravel
SilurianSalamander posted a topic in Fossil ID
any ideas?
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Found in a culvert outside of fast food place. Paleozoic limestone of unknown age. Help!
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- cephalopod?
- crinoid?
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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
- conifer
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Vestavia Hills, AL (Ordovician to Mississippian) I found these very odd rocks exposed by recent flooding. i wondered about a tree root mold or burrow for the first one, but figured low chance of identifying. Just in case, I did a vinegar soak to remove more of the mud. Today, I saw a tiny little spiral shell. Is it a fossil? (vs a modern snail that got trapped in this sediment). Any thoughts about the overall shape of the rock? Since it was found nearby, I’m including a pic of the other weird rock. I considered part of a horseshoe crab or trilobite molt, but I can think of more arguments against than for these. Thanks for looking.
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Pottsville Formation, Alabama I would like to peek under the mud on the specimen in the first pic to determine if it is a compression fossil. This film on this particular sample seems brittle so I have to be careful. I can see pigmentation under some of the mud - that is where I want to work. Ideas? I hope I’m using these terms (carbon film, compression fossil) properly. I included other pics of other specimens that have carbon film or some type of mineral imprint (not sure what the term for this is) that I am to cleaning, sorting and comparing to potential compression fossils from Carboniferous. I was initially ignoring the specimens that look like pattern could be iron staining- thinking all were Liesegang rings, but I’m not sure that explains all of them.
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I found these back in January but apparently never posted them here (can't find any thread), I'm post mostly to my FB nowadays. I found these in about 30 minutes. They are typically assigned as "Petrodus" but who really knows. Years ago at this site I found teeth from at least 3 shark species including "Edestus". These are from the "Mingus Formation" I believe.
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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.
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Found in some Paleozoic chalk and limestone gravel along with crinoids and brachiopods.
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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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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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Tiny crinoid columnals. Coming back to the same beach with a sieve tonight.
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- criniod
- echinoderm
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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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Never seen this texture on a brachiopod or bryozoan before. Found in Wisconsin gravel.
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How rare are phragmocones from cephlapods? Are they something you need to get into a quarry to find, or can you recover them out of roadcuts? This is for the Midwest, like Illinois, Wisconsin etc.
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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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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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Found in Crane Hill, AL (Carboniferous) Could the (presumed) burrows be part of an Asterosoma sp? Thanks for looking
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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).
