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Showing results for tags 'matrix'.
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I have some Devonian era fossils i'd like to clean up a bit, i was wondering about good tools or methods of removing limestone matrix without damaging delicate fossils
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Hi, JP. I saw your comment on another thread, and decided I would try it out on some White River micro matrix I have been working on, and it works pretty well! Much faster and easier! Just thought I would share some pics of the teeth I have found so far: My brother actually found a small lizard jaw sitting on top of the micro matrix. The lizard jaw is near the center of the container. I have searched through probably less than one gallon of sifted micro matrix. And to me, that seems pretty good! Cheers and Shalom, -Micah
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Attention all microfossil fanciers! I have, on a first come first served basis, many samples of microfossil matrix available. From the recent to the Devonian. If you would like a sample(s), PM me with a name and address and I will send it to you, gratis: Mississippian- Leitchfield, KY Paleocene- Gosport Form- Monroeville, AL. Plio-Pleisto- Venice Beach, FL Miocene - 10 Mile Creek (Chipola) - Althea, FL. Oligocene - Astrup, Germany Eocene - Chipola - Whiskey Bridge, TX. Recent - Talofofo Beach, Guam Recent - Asan Beach - Guam Recent - Pogo Beach, Guam U.Cretaceous - Lagerdorf, Germany M.Devonian - Silica Shale Form - Toledo, IH. Eocene - Orangeburg Form - Harleyville, S.C. Cretaceous - Toolebuc Form - Queensland, Australia U. Cretaceous - Ripley Form/Coon Creek member - Tupelo, MS Initial limit of 2 per person.
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I think these are fish teeth. Can that be confirmed and can any of them be identified further? Happy to provide additional view of any, if that would help. Grid lines are 1mm spaced. • Is T11 Chondrichthyan? • Could T12 actually be a stingray dermal denticle?
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- fish teeth
- florida
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Is this a dasyatid tooth? It seems different from the others I'm finding in this micro matrix. Grid lines 1mm spaced.
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Here's a drum fish tooth lodged in a curiously shaped piece of host matrix. Smooth, cylindrical with a potential spiral groove. What do y'all think? Grid lines are 1mm spaced.
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In 2lbs of Peace River micro matrix, I found 415 shark teeth, of which 90 seem potentially identifiable. Here they are in different categories. Grid lines are spaced 1mm apart. I can get additional views of any teeth as warranted. A: Based on my experience with larger teeth, would call A1 as hammerhead. A2-A5 share many shape characteristics, but are they Rhizoprionodon? B1-B14 Carcharhinus, I believe. C1-C21 seem like lemon, Negaprion. D1, D2: posterior Galeocerdo tiger shark? E1-E5: These may all just be mostly-root fragments of Carcharhinus, and reflect a common pattern of breakage? But they were a "type" that emerged in the sorting. F1, F2: Snaggletooth G: This group contains a very common morphology I found, a blade with a single cusplet on the posterior side of the tooth. Most have roots that look broken. So maybe we're dealing with a lot of Carcharhinus that all broke in a similar way? Most of the blades show little or no sign of serrations, but maybe that's weathering (or juvenile teeth?). I am pretty unsure about these. G8 and G9 seem somewhat sand tiger like. Are many of these G teeth Rhizoprionodon? H: the odd singleton teeth. Some of these may be too weathered to ID. H1, H6 have similarities to some thresher teeth I have found. H2 seems potentially sympheseal H3 contortus? H7,8,9? lemon? too weathered to ID? H4 interesting cusplets, but I have little sense of ID H5 seems like it could be a sand tiger H10 lemon? H11 Carcharhinus with no serrations on the blade? H12 interesting, but ?? H13 interesting, but ?? H14 sand tiger? H15 thresher? H16 interesting, but ?? And for the sake of completeness, here are all the teeth I deemed not worth trying to ID: If you see anything worth closer inspection in there, I'll grab photos:
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In two lbs of Peace River micro matrix, I identified these 8 items as fish vertebrae (+1 discovered in the "coral" pile). Grid lines are 1mm apart. Are the bottom and right pieces on the lower row eroded shark (or ray) verts? I also sorted the item below into the vert pile, but upon photographing it, I became less sure. Instead of having a half-round profile when viewed end on, it was more linear, like a cannoli shell. Unfortunately, it popped out of my forceps before I could take photos of other orientations, and now it's lost forever. But on the off chance these two photos are enough for an ID, here you go:
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Are these solitary corals? Grid lines are 1mm.
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[edit: TLDR: DD1-DD13 are denticles. Everything else is likely not.] Here are the candidate shark dermal denticles from my Peace River micro matrix sort (grid lines are 1mm): • DD1-DD13: quite certain in the ID, but can the species be identified? • DD14-DD19: Less confident about these more idiosyncratic specimens. DD16 might just be very worn, or possibly just a lookalike piece of phosphate. might DD17 be a steinkern? Its ridges seem shaped like the other denticles, but the material appears different. Additional idiosyncratic specimens, two orientations each. I am uncertain if they are denticles: • DD20 seems to have ridges, but texture is rough • DD24 has a promising profile, but ridges aren't obvious • DD23 has a rough "base," visible in the lower shot, and overall conical form. What do y'all think?
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- dermal denticle
- florida
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Thanks to a fellow forum member, I was able to get my hands on a few pounds of Peace River micro matrix material. I hope to bring a number of items from it to y'all for ID help, starting with this tooth-like conical item. Grid lines are 1mm.
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Hello. Is this matrix from Nanxiong Formation? Please tell me. Thanks in advance.
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Some of you may recall that towards the end of last year, I bought myself a usb microscope. The aim was primarily to have a closer look at my amber inclusions. Also used it to magnify my regular fossils too. After having read through some of the threads on this sub-forum, I decided to delve into the realm of micro-fossils. Had a look online. And found a good deal on that auction site. 28 x 50 gram sachets matrix. Spanning various time periods. According to the seller, it is primarily invertebrate material. Am planning on getting started on the weekend.
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- gravel
- invertibrate
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Hi. I got this random mosasaur tooth in matrix. It has this unsmooth texture, so I assume it could be an fake root. Also I see two damaged white marks. I am more interested about the crown, but I think its still good to know so I can notify about it if needed. Thank you for your answers.
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This is an Albertosaurus tooth in the matrix. Below this matrix is a hadrosaurs rib, the fossils comes from Drumheller ,Alberta, Canada There are special patterns on the enamel. Any insight on this would be greatly appreciated.
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Howdy! I found dozens of crinoid stems recently and most of them seem to have a thin layer of matrix attached. They were found in limestone, but I don't even know what mineral they've been fossilized in...calcite? Would I be able to remove the matrix with sandpaper and perhaps even polish them? Would sanding them remove visible segmentations? All help is appreciated, thank you.
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Are there any rules to follow when cutting a fossil matrix ?
Denis Arcand posted a topic in Fossil Preparation
I'm trying to reduce my fossil storage space (I have a lot of matrix taking up space in many boxes). The only option I have found is to cut the matrix using a portable water saw with a diamond blade. As I'm new in this field, I'm afraid of doing something wrong. What are the rules when cutting a matrix? How near to the fossil can I cut without damaging the fossil? How much of the matrix should I keep for presentation purposes? Rectangular shape matrix are good for storage, but that doesn't feel natural to me, any suggestions ? Here's an example of what I'm talking about Before After.thumb.JPG.0d7b99ec7a3fe77644e4149649112a1f.JPG)
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Suspect Eldregeops on Matrix
A.C. posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hey all, I have a fossil in my collection that has a fossil on matrix. I am unsure as to if this fossil was placed there unnaturally or not. Under black light no obvious signs of glue (nothing glows) Though the suspect part to me is what appears to be holes or bubbles on the rock at the base of the specimen. I guess it’s possible that the specimen was completely removed cleaned and popped back on, or it is possible that the specimen was found and later placed on this matrix. What are the chances though that this fossil and matrix go together and have never been separated?
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Good day. Recently got this mystery specimen from the owners of an extremely productive and well-known ranch in Powder River Country, Montana (please see photos). The specimen was found by the owner. Unfortunately, this specimen is not like those. Here's the only additional info: "This large piece of skull [?] was found in one piece. Weighs approximately 4 lb. 3 oz. The measurements are L 7 2/10" W 4 3/4" No repairs. Color is various shades of brown. Some of the openings actually have some matrix in them, but I left that, in order to stabilize the thin walls." I know it's particularly hard to ID a piece like this from photos, but if you have any ideas, I'd deeply appreciate them!
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From the album: Fin Lover's South Carolina Finds
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From the album: Fin Lover's South Carolina Finds
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An Honest Question: Why are Fossils in Matrix so Popular?
Rock Hound posted a topic in General Fossil Discussion
I'm curious. Why are Fossils in Matrix, so Popular? Is it the impression that they are "as found", and somehow more genuine? Inquiring minds, want to know. -
Another recent acquisition; a beetle of some flavor from Colorado. Good looking piece, both pos/neg are there, but it looks like something flaked off during prep/collection and was put back on. Can anyone tell from these photos if the annotated crack looks stable, or if not, what should I use to shore it up? It won't be handled on a regular basis, but I want to make sure it's not going to fall off on its own. Sorry about the varying lighting; one photo is from the vendor's site, the other was self-shot. I assure you that they're the same specimen. The vendor has agreed to make things right if it can't be stabilized, so at least there's that. Any suggestions/info that can be gained from these photos?
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hi folks, Im thinking of buying a cluster of Oviraptor from a seller who says he got these at a gem/fossil show over 10 years ago. He says he preps fossils and has extensive experience but has not finished prepping these particular eggs and won't get around to abrading them out of the matrix. I told him they are fake but he insists they are not, so I wanted to put it to the test here. thanks for your help.
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I have no idea the origin of this fossil. I had a couple paleontologist from a dinosaur lab look at it to no luck.
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