Search the Community
Showing results for tags 'cast'.
-
Would you leave this as is or remove the casts?
OregonFossil posted a topic in General Fossil Discussion
I was lucky the last time out and found a 36" piece of a near shore sea floor. Most of it looks like this, a mixture of shells, shell fragments, and casts. Would you remove the good stuff or leave it as is? -
A few days ago I found a nice internal & external mold of a rare Arctinurus sp. This is something I've been looking for over 5 years. I was beginning to give up hope having never even found a pygidium in these rocks. Anyway, I decided it would be good to make some internal/external latex casts and molds and show progress here since I haven't seen much on this topic. I am doing this to observe any differences in the internal/external shells since with this type of preservation the skeletal shells have been dissolved during dolomitic diagenesis. The outer shells could possibly exhibit diffe
-
Found in the Lee Creek spoils pile. Is this some sort of coral or a cast of a burrow? The item is tubular and was hollow at one point and filled with something that looks like obsidian or flint. Or maybe it was the other way around and the "filling" was covered by the material surrounding it? Maybe something geologic and not even a fossil?
-
This is unlike the calcite I usually collect, it looks compressed, and like it was part of something, the shape looks too unusual to be natural. Hoping someone might recognize the shape. The part of the creek it came from was Eagle Ford but downstream from Alluvial deposits.
-
I need to make some molds, best (cheap) source of molding material?
OregonFossil posted a topic in Fossil Preparation
Mostly small fossils (think less than 20mm, many 2 to 3 mm). Maybe a pound or two. Brands on Amazon, other sources? The molds would be used to photograph for fine internal and external detail from casts. I am clueless when it comes to this. -
I believe this is petrified wood. I Found this and a larger piece, but the larger one is a different texture. It's more smooth with dimples and I was able to figure out identification of that one, but I'm not so sure about this one. Any information?
-
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.
-
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
-
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
- 4 replies
-
- 2
-
-
- keasey formation
- snails
- (and 2 more)
-
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!
- 12 replies
-
- 2
-
-
- type specimen
- cast
- (and 1 more)
-
Will follow up with current stage photos shortly! Here is what I started with: Unidentified Provenance Unknown Really bad mold mismatch/ thick seam
- 23 replies
-
- 1
-
-
- museum
- university
- (and 2 more)
-
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.
-
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.
- 15 replies
-
- 1
-
-
- reproduction
- cast
- (and 2 more)
-
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
-
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
-
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?
-
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.
-
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
- 26 replies
-
- 23
-
-
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.
-
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
-
My last inquiry, as found in clay stone/mudstone @ Savannah River
-
I found these two today, looking for identification
-
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!
