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Found 14 results

  1. What made this impression?

    Thanks to you guys, I think I recognize an endocast/steinkern when I see one. But if I'm right and this is one, I can't for the life of me figure out what would have made this kind of impression. Does this form look familiar to anyone? At first I thought it looked a lot like the rim of a queen helmet shell, but there isn't an opening there to fill with anything that would form a fossil. Found on Myrtle Beach. Thanks! --Paula
  2. IMG_2944.JPG

    From the album Daw85

    Turtle head
  3. rapp creek hunting

    Howling wind and deep ice cold water, but figured the creek bed would protect me from the wind (it did) and cold (not so much). Less hunters out. Don't usually post casts/steinkerns but this gastropod(?) has two small fossilized worm like things on it (probably need to get a better photo than the scan). All the rain has washed shells everywhere (lots of 5" to 7" scallops/ pectans everywhere; didn't see any whole ecphora, the only shells I usually pick up. Frilly oysters were everywhere as well; top half is neat). Most of the teeth I found was small or broken or both; three cow shark, one decent with root. Four(?) angelshark and several others, lots of spikes most missing their cusps, small triangular most with faint serrations, and a bunch of glossy drum teeth (photo is of the other side). Broken verts. When other stuff dries, may find something else interesting.
  4. Bryozoan Archimedes? Tooth?

    I’ve got 4 fossils, or steinkerns, I’m needing help identifying, all on the same rock. Found in a creek bed in Boone County, MO. I believe it to be from the Mississippian Era. I believe those labeled one and two are Bryozoan Archimedes. Number one (the biggest of the two) measures at a little over 1/4th of an inch. Number two measures at almost exactly (slightly over) 1/4th of an inch. Number three I’m thinking is part of a stem of a Crinoid? Can anyone confirm or deny this for me? The fourth is, what I believe to be, a steinkern of a possible tooth? Like, a tooth laid there at one point, and the impression was left behind? It measures at exactly 1/2 inch. (Due to file restrictions on pix, I will upload some pix in the comments.)
  5. Maybe clam steinkern

    Is this possibly a small clam steinkern or just an ordinary concretion? Or maybe a tiny, ancient UFO? 4.5 cm wide x 3.5 cm deep x 2 cm thick. Some of the openings go in a ways, pic 2, left side goes in about a 1/4 inch, same with left opening in pic 3. Pic 2 just looks like some 1950's movie UFO.
  6. These are all in the same stone. Wondering if it's 3 different preservation types of the same species. Found in Sw fl, in the sand. Trying to learn to recognize familiar players in their various forms and stages of erosion. Couldn't get the tape measure next to two of them, but they're both 2.5 inches long on the nose. The one that looks like a unicorn horn(w/ tape measure) was what caught my eye, rimmed with grass it really stood out! Its shimmery and beautiful. Is it ok to chip it out? Far from its margins, of course. 3rd pic following...
  7. Hardouinia Echinoid Steinkerns

    I had a couple Hardouinia beginning to exfoliate. Perhaps sacrilege, but I peeled ‘em. While ammonite steinkerns are quite common, it is cool to get an “inside perspective” on echinoids.
  8. Hi all, I was wondering: would the steinkern of for example a Turritella be considered a fossil or an ichnofossil? Because in fact, the shell itself didn’t become a fossil, and what we are looking at is just sediment that filled in the shell and then solidified. But then again I’ve never heard of a steinkern being referred as an ichnofossil... So what do you guys think: really a fossil, or just a trace fossil? I am curious to see everyone’s opinion Best regards, Max
  9. Rappahannock Creek find

    I have no idea what these things are but I keep picking them up. I think someone thought they might be steinkerns (casts) or maybe had other suggestions (getting old, senile, maybe I forgot). Almost flat on one side, kidney-shaped where there are characteristic radial bands or striations; rounded on the other side (second picture). Almost always have the black glossy enamel of fossils. The more rounded side on this specimen is chipped and you can see the same radial banding within, but with no shiny black. Generally all are about an inch or so long. Thanks for your help?
  10. Hi all, I acquired this piece, did not find on site. It seems to be basalt but the outer matrix is packed with sand and shell fragments. The brachiopods (I am assuming from the research I have done) are rather large, and appear in a cluster. Some of the fragments I have observed appear to be from the devonian era. I am assuming this is a steinkern vs true fossil. But the matrix is so fragile to clean it is destroying it. I am more of a rock hound than true fossil student. I have learned from some of my earlier posts last year that if the structure has been replaced by silica than it is not a true fossil ie steinkern, I believe. The matrix includes so much sand and shell fragments that it makes me question how silification works? Some of the shells, brachiopods, became irridescent as the stone absorbed moisture. Looks more like stone when it is dry.. . One of the pics that looks like brushing its teeth, has an opal in the background that I believe is the actual metamorphic process from this exact type of matrix and brachiopod by water and silica ooze. Interestingly as I have been cleaning the opal up also, it has the same structure as the outer pieces of the shell from the brachiopod, feather like. The striations in the opal also seem to be where the brachiopod foot would be... and also the richest mineral and most beautiful layer... Any ideas of what I should do with this piece to clean it or leave it alone I would love. If you have knowledge about brachiopods and opals I would love to hear that as well!! Thanks Kim
  11. Another bivalve steinkern from France

    Hi all, Anyone know what species/genus this gastropod is? Never seen anything like this one before... It's from Rivière-sur-Tarn, a location in France that yields fossils from the Toarcian stage of the early Jurassic (approx 180 mya). Best regards, Max
  12. Bivalve steinkern from France

    Hi all, Anyone know what species/genus this bivalve steinkern is? It's from Rivière-sur-Tarn, a location in France that yields fossils from the Toarcian stage of the early Jurassic (approx 180 mya). Best regards, Max
  13. Hi all, I just acquired this interesting specimen that was identified by the seller as Helicodromites mobilis. However, when trying to verify this, the images and description I've been able to find really don't seem to match. The whorls on this are flat and attached to the core. To me, it looks more like a cast of a shark egg case. Are any of you familiar with H. mobilis? Thoughts? Thanks for taking a look!
  14. Here is one that has me stumped. It was purchased as a possible coprolite. However, unless the critter ate a lot of dirt, I'm thinking it is some sort of steinkern. It has a smooth texture on the outside (like it was coating in a thin layer of iron-rich silt, but is very gritty on the inside. It was found near turtle remains. I will post a microscopic image in the next window. I have come across similar configurations (on a much smaller scale) in the Rattlesnake Creek micro matrix, but I don't know what those are either. I apologize in advance for the quality of this photo. I would happily retake it at a better resolution if anyone thinks it would help. Thanks for looking!
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