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Showing results for tags 'septarian'.
Found 15 results
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I need some assistance identifying this one please. It looks very peculiar. The shape is not like anything else I have found in this area before. It is smoothly shaped with some very small bumps and one main protrusion. Perhaps the most interesting feature is on the underside. There is some material in the center surrounded by calcite. Brings to mind the way a mushroom looks and imagining the inside part filled with calcite surrounding the stem. location of find is within the Santa Ana Mountain range of Southern California, along the Santiago creek near a mixture of fossilferous mudstone and micaceous sandy shale. The area is full of Gastropods, shells, and ammonite.
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It is probably not a fossil but just in case … The images are microscopic. Here is the video
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Hi i found these both in se ohio. I am wondering if this is some sort of fossil. or a septarian concretion of some sort. i am curious bc i found the little one first and then later in another creek this bigger one. i found it curious that they both appear to be the exact same shape. any ideas?
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Is this a septarian nodule? If not, what else could it be? Found in Germany. 4 centimeters.
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Hi - we have another curious find, hoping someone here can give us some insight on what this is. We initially picked it up thinking it was a small piece of petrified wood. But upon closer inspection it looks to maybe be bone or septarian or ? The dark outer layer has a reptile-like pattern on the top side, and a smoother (more weathered?) appearance on the underside. I’ve attached a bunch of photos hoping they will help. This was found on a beach in southern Oregon. It’s about 3cm x 5 cm. Thanks…
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In my favorite creek with water levels so low there is a facinating little stretch exposed that is unlike any other part of the creek I've seen. There's about 100 ft of this grey marl in lower bank going into water, it's gritty, some still soft some like cement, loaded with gastropods, bivalves, and coalified wood. Running through it are the biggest calcite veins I've ever seen, some 10-15 ft long and almost pink, have no idea how far down they go. I was barely able to break a section off, this is part of one the smaller veins. Wondering if anyone has seen something similar. The other odd part is above that, there is a layer about 3ft deep of what I call cobblestone clay, it's hues of yellow and orange layered and rounded easily falls apart. Found shark teeth in it but I've never seen anything like it in Eagle Ford. Is there an association between the layers or do they even belong together?
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- creek bank
- cretaceous
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Pretty confidant this is some kinda septarian-something-or-other. Got it out of a bargain bin, unlabeled. I doubt its a fossil.
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From FB Trilobites courtesy of Gilberto Juárez Huarachi. Asaphidae indet., preserved in septaria, Floian of Bolivia:
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- ordovician bolivia
- septarian
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New here! I started collecting fossils on the Great Lakes two years ago. Spring turns up the best fossils and minerals. This looks like a Trilobite, can anyone lend me any more information?
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Septarian Nodule
DPS Ammonite posted a fossil in *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)
Septarian nodules sometimes are misidentified as turtles, coprolites and other fossils. Septarian nodules are hardened mudballs that dehydrate, crack and fill with minerals. The cracks in this one filled with fluorescent calcite. The ribs that stick out are the calcite that filled the cracks in the mudball. This nodule was found in calcareous shale from the Late Cretaceous Arcadia Park Formation. The exact age of its formation is unknown but probably occured in the Late Cretaceous. Septarian nodules from the Arcadia Park Formation are common in north Texas. Some contain spectacular calcite crystals when cracked open.- 2 comments
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- celina
- eagle ford
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More ludicrous "Dinosaur eggs"
Aurelius posted a topic in Is It Real? How to Recognize Fossil Fabrications
I saw these beauties on a popular auction site a few days ago. They are described as authentic dinosaur eggs. Clearly, they are anything but, and they appear to be simple septarian nodules. Anybody interested in how to determine whether a dinosaur egg is fake or not should do a forum search, since the subject has been comprehensively covered. This first one, you'll be fascinated to know, actually shows the preserved embryo. They have a couple of hundred watchers, and are already at a remarkable price for ordinary rocks. I informed the seller that they were not dinosaur eggs, in the interest of giving them the benefit of the doubt. They thanked me, but a day later they are still online, so I know what I think about that..thumb.jpg.d4558c94a8368c790bc087c7b712938f.jpg)
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- dinosaur eggs
- fake
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Hello everyone, I'm a collector of all sorts of things, I use to love hunting for shells and fossils near the ocean as a kid. I was going through my old collection and I found this interesting rock that I hope someone can help me ID. The specimen was found on a beach on an Island in Greece over 20+ years ago. It's got some naturally occurring shapes and letters, almost like an abstract painting on the one side and a signature on the other side. Nothing has been done to it, as found. My guesses......ancient ball of clay with some sort of plant life in it? Septarian Nodule? A little stumped so hoping someone can help out.
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Found this on a desert walk southwest of Tucson, Az. Cool find.....is it possibly some kind of fossil, perhaps a fossilized structure similar to septarian formations, or just a cool looking little rock? Thanks for any and all help.
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I find a lot of these Michigan Lightning Stone (septarian/concretions) here locally. Often times there is a visible line, where one part is the clay part and the bottom (i'm guessing) is this material that has tubes and odd shapes. Sometimes fossil is clearly visible like the worm looking one below (2nd pic). Can anyone tell me more about these types of stones? I'm very interested in their formation but have been unable to find much information. The top pic shows the darker clay on top and the line where it appears to be fossil. The material is still clay like but has a lot going on. It looks similar to the crinoidal limestone death floor stone I find, but without the obvious fossils.
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Gotcha! But seriously, this is one of the nicest "turtle shell" septarian nodules I have found. It's from the Mississippian of Kentucky. It's 5" across (13 cm). I think it's being eaten by a starfish.
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