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Showing results for tags 'cast'.
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Which would you prefer to find a mold or a cast?
OregonFossil posted a topic in General Fossil Discussion
Which do you prefer to Mold or Cast - Why? Secondary question is have you ever used a vice to break shale or sandstone? I started do this and seem to get good results. -
Good Morning, I came across this interesting piece about 3' below-grade in Live Oak County, Texas. I've managed to dissolve some of the 'caliche' with 5% vinegar to clean this up a bit. There is pet wood and the occasional Columbian Mammoth molar in the same vicinity as this piece was found. It is relatively light for it's size, compared to pet wood. Looking for anyone who can offer an opinion/advice on this piece.
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So I have found a significant "load" of mostly bivalves in a very deep water mudstone. This mudstone is very hard, when it fractures it is a lot like obsidian, extremely sharp and extremely hard. The specimen in this image is 3 x 5mm. The calcium shell has very little identifiable structures, yet the cast part seems "fair" crisp. If the shell was removed perhaps shell parts would be shown in the cast for ID. Would you remove the shell (if so how? acidic acid?). Any ideas on how to soften this mudstone, it is as hard but not as brittle as any shale I have seen. G picks don't see to do anything
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No images (yet, they are coming), yesterday in celebration of my Stereo Microscope (3.5 to 90x with camera port) shipping I decided to go fossil hunting. @71 I have to be careful when I go hunting (my wife it turns out is a fair weather digger) by myself. I have spent the last months working on my collections from the summer in two Keasey Formation locations (deep and shallow marine) with good manual tools and a dremel, but with sup-optimal hand optics (one is actually a very nice 8x optic but just to hard to use). So my wife said why don't you get a reasonable scope (would be my first since h
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- keasey formation
- snails
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I was able to get an exact ID on this American Museum of Natural History cast...which I promptly forgot on a Post-it on my desk at work... so posting now as this is the next attempt at museum quality display prep. will update the ID in an edit...can remember it’s a cast of the type specimen from the Sharps formation. Porcine. for this one I plan extensive reconstruction to make it better than found!
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Will follow up with current stage photos shortly! Here is what I started with: Unidentified Provenance Unknown Really bad mold mismatch/ thick seam
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Whew. Last one with identifying marks to identify. Is a museum cast. UNSM 4616 Sure, I could email the collections curator at Morril Hall, but I’m afraid to wear out my welcome. As of yet have been unable to find data on this one on my own. Figure I’ll give yinze a crack at it before I bother the museum for the twentieth time. My research shows this to be a camel of some sort. It is likely Nebraska or South Dakota in origin for the original due to the provenance of the other casts yinze have seen me dealing with the last few weeks.
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Fast and dirty: Found this cast a day or two back in the stock room- someone made an attempt...so I’m going to fix it since it uses similar colors to the lion and peccary projects.
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I went camping today. ok, not really camping. just picnicking at a campsite in the woods. we didn't stay over night because it is far too cold. so I found this rock with these cool indentions and want to know what it is. at first I thought it was by a tool but it's not. thanks, dorky
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Part 2 of my Fathers basement I have 2 crocodile skulls and one turtle. I believe they are Replicas? but the teeth on the crocodile are Fossils? once again I believe these are out of Morocco in the 70s or 80s? Thank you
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New to geology, so excuse my paltry terminology. Description: Tubes, many branching, between 1-3cm in diameter, in places as thick as a forest root system, material very sandstone-y, surrounding material clay. from my research these seem like burrow casts of... worms? tetrapods? do burrow casts form in such abundance?
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What species of Tyrannosaur did this tooth replica come from?
dinosaur man posted a topic in Fossil ID
Hi I found this with the rest of my fossil replicas and was wondering if it could be a Rex tooth or another type of Tyrannosaur tooth. I don’t know if I can post this here or get an ID on it since it’s a replica but I got it at the Royal Tyrell Museum in Drumheller, Canada it’s a replica of one of there specimens. And I just wanted to know what it could be since it seemed strange to me on how skinny and long it is, Thank you!! -
I know it’s a internal cast of something but I can’t remember what.
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For those that don't live and breathe fossils like we do, horn corals are often mistaken for horns, claws, etc. I knew someone who even swore the horn coral he had found was a fossil carrot, despite my insistence to the contrary. So after finding my best horn coral specimen ever (the largest one in this trio is about 9 inches long), I decided to make a cast of the specimen and "reconstruct" it to show people what they may have looked like when living. I know @caldigger will be very happy that there is now a horn coral action figure - complete with bioluminescence! Fossil next t
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Possibly a burrow? Found beneath the Chinle formation on US89 in northern Arizona. 4 inches long, 2.5 inches tall, with a slight curve and a flatter bottom side. The rock looks like limestone, but was found on a flat wash without similar rock in the nearby area.
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Here's a strange one. I found plentiful piles of what I thought were casts and internal molds in the iron-rich St. Mary's clay of Virginia last year. Loose clam fossils riddled blocks of talus. I was able to wiggle some out of their ancient resting places without s much as scratching the matrix. Generally that's because the shell disintegrated, leaving a void between the mold and the cast. If you look closely, however, what looks here like an internal mold isn't. The sculpture on the surface is clearly the outside of the shell. If it were the inside, you would see round protrusions where the
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My last inquiry, as found in clay stone/mudstone @ Savannah River
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I found these two today, looking for identification
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Hello evereybody, I dont know if this is the right place to post this but I would be interested to learn more about mosasaur skull three-dimensional anatomy. Do someone know where it is possible to buy accurate mosasaur's skull cast? I am looking for something more educational than decorative and ideally not too big. I know that there are plenty of interesting stuffs on the web but from my experience in human medecine nothing is as good as a three-dimentional model to understand complex anatomical structure like the skull. Thanks for helping!
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I recently bought a Do It Yourself Psittacosaurus skeleton cast. And I thought it would be fun to share the process of mounting the skeleton. I already had a skeleton cast of a juvenile Psittacosaurus but now I also have an adult version! As it came painted, I could just have mounted it as is. But I wanted to give it a more interesting post rather than a a straight spine and tail. Since the spine and tail come in bundled segments of vertebrae. I thought I would cut them apart so that I could create curves better. And as I was modifying it anyway, I might as well improve
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Commonly faked, hard to tell 100%
DevonianDigger posted a topic in Is It Real? How to Recognize Fossil Fabrications
So, I found this guy on the auction site, really only this one representative photo. These are often fake or frakenfossils, but I didn't see anything that screamed fake to me in this one photo. Just wanted to put it out to the room for other people's input. It doesn't matter as I basically stole it for 9$, so even if it's fake, I don't much care. Just curious what everyone thinks. (I don't have more photos, I just bought it this morning, this is just the provided photo. I'll be able to tell if it's fake when it arrives this weekend for sure, but the suspense is just too much, lol.) Also, it's -
While I was out cracking that last rock I found this in the drive is this a clam cast??? found in my drive from a gravel load west oh Houston Texas from Brazos river
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This supposed real Cretaceous croc from Khourigba, Morocco is up for auction and, uh, isn't this just a painted cast with some real croc teeth thrown in?
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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 d
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I picked this bit of oyster shell up because it has pretty barnacles on it. I started cleaning mud out and a chunk fell off revealing this. I thought maybe a gastropod cast that's settled in, but it looks attached? It's also not evenly spiraled. It doesn't show in the pictures, but the fatter section has an undulation to it. Worm cast? Anyone know what it is? (Sw Florida)
