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Showing results for tags 'crustacean'.
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From the album: 1925 Body & Trace Fossil Collection - Ocean
2.83 mm long shell-
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- antennae
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What I believe to be a carpus of the major chela of a ghost shrimp. Not an unusual find for me, but this was found near an exposure of Pittsburgh Bluff formation where previously I have only found them in Astoria formation.
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ID help. Crustacean, mollusk, or something else? Upper carboniferous.
Gramps posted a topic in Fossil ID
I have found several of these in an outcropping of shale and limestone in the Iola Formation in Northeastern Oklahoma (middle Pennsylvanian). The longest dimension is about 15 mm (≈ 5/8 inch). Some of the other specimens are slightly larger, but all have the same pattern of bumps. (I photographed this one because it shows the least wear.) I’m wondering it might be the carapace of a phyllocarid or some other crustacean. Alternatively, it might be a bivalve or other mollusk. Any help with ID would be appreciated. Focus and exposure were difficult, so there are several images. Best wishes.
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Long time ago we dug near Osnabrück (NW-Germany) in a small short-time pit called "Am Danebrock". It was full of ammonites (Androgynoceras was the most common), we got rare vertebrate-parts from there, shells, snails and and and. Fossils were preserved in nodules. One of these contained a lobster, it was the first one of this typus ever found in northern Germany. I gave it to the Museum in Stuttgart and wrote with famous Günther Schweigert a small paper about it (I did the geological setting, what was only 5% of this paper) First_record_of_a_polychelid_lobster_Crustacea_Dec.pdf
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- crustacean
- velpe
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From the album: C&D Canal Micro Fossils
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Strange Finds from the Austin Ozan. A Test for the Ozan Experts.
Mikrogeophagus posted a topic in Fossil ID
I decided to take a trip to an Ozan spot after some rain a couple weeks ago. The gravel finds were sparse, but I fortunately remembered to bring some of my trusty excavating tools with me from Dallas to Austin. After the trek to the main exposure at this site, I got to scouring the shaly creek bed. In previous trips, I usually didn't spend much time doing this as I had limited tools for digging. With some newly acquired technology by my side, I encountered a facet of this location I hadn't experienced before. A lot of the fossils that preserve in this formation are too fragile to survive once exposed to the elements. I was surprised to see the wide array of species I had been missing out on in the past. Some things were easy to recognize. I came across a chunk of matrix filled with fragments of heart urchins. Not much of it was worth keeping even after I poked and pried my way through it. In the end, I only decided to keep what I think is a long urchin spine (B) with some echinoid bits on the underside. I also found some crustacean parts for the first time in the Ozan (C). I believe I managed to find the scattered remains of what once was a decently sized crab. It's extremely fragile and there appear to be limbs scattered every which way. I got to this ID by spotting a couple of spiny shelled projections poking out at various points. Later cleaning revealed some more. The thing is so destroyed, however, I might give up on it. I also came across what looks like a piece of a crab claw. My most enigmatic find was something I almost overlooked completely. Here and there throughout the exposure were these broad, dark patches of shale (A). I assumed they were flat, but when I accidentally kicked one, a section popped right out of the matrix and revealed its 3D nature. After working out the others parts by it, I noticed that these things had some regularity to them and perhaps were the remnants of an animal or plant or whatever. On both sides of the specimens, there appears to be a darkened indention running down the midline. I also noticed curved lines running across the pieces in a pattern reminding me of the banding found on the shells of baculites. The cross section of these finds appear to just be shale and do not present much information. The pieces start off wide and gradually thin themselves towards one side before ending in a point. I wish I took pictures of them in situ, but I unfortunately only have pics from my room. One specimen had pyritic inclusions which are typical for fossils from this exposure (I've seen pyrite in bones, crustaceans, urchins, oysters, etc.). When I look at them, I start thinking of cephalopods, but that's a big jump. They could be some sort of trace fossil, but that doesn't quite feel right. I don't know if any Ozan experts on here will recognize these, but I am really curious to try and pin down some ID if there is one to be found. To round off the trip, I also came across a horn-shaped coral (D) that I suppose washed down from the Austin Chalk up stream. Some more typical finds (E) were also to be had. It was nice to get back out and enjoy the cool waters of an Austin creek. I won't be sticking around long, however, as I am about to make a couple of trips across Texas for school interview stuff in the near future, so look forward to future posts outside of my usual grounds. Picture: A). Main Enigmatic Finds. This is the bigger piece. It continued under the shale below the unstable wall of the creek. Decided it was dangerous to dig to the end of it. Second piece I brought back. Much smaller, has pyrite, and still partially in the matrix B). Urchin Spine? C). Crustaceans. The top shows the pyritic scattered one. The bottom shows the claw. D). Coral I think washed from the Austin Chalk. E). Typical finds (Goblin Shark teeth on the left and enchodus tooth on the right. Small mosasaur vert on the bottom I think from the Austin Chalk) Thanks for reading!
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Found in some Paleozoic chalk and limestone gravel along with crinoids and brachiopods.
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Crab Claw Pagurus banderensis Glen Rose Formation
JamieLynn posted a gallery image in Member Collections
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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From the album: Texas Cretaceous Fossils: Crustaceans
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Do Tadpole shrimp fuel the imagination of trilobite behavior?
Biotalker posted a topic in General Fossil Discussion
I recently watched these short videos on Nostraca tadpole shrimp/ shield shrimp. I'm sure it has been observed a million times before, but I wondered how similar the behavior of these extant critters might be to trilobites, given their convergent anatomy. Eyes on top, mouths on the underside of a shield like head, multiple similar legs/gills along its ventral surface. So to see these crustaceans maneuver, eat and remarkably molt (middle of second video), I just imagine similar behavior from trilobites, those stony motionless objects of our endless fascination.- 3 replies
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Found what looks like to me like a tail of some crustacean in Saltwick Bay a few years ago. It's about 3 inches long, and the surface detail is incredibly well preserved. Was wondering if anyone has found anything similar, or knows what kind of crustacean it could have come from?
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Oxford clay, Peterborough Member, Jurassic, Callovian, near Yaxley in Cambridgeshire. I spent the morning getting muddy in wet clay, and found this. I think it might be part of a hybodont spine, or other ornate fish spine. I've collected a fragment of hybodont spine from this site before. The surface does seem to be enamel, and the shape is slightly curved. Any assistance greatly appreciated.
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I run across these guys frequently in the Mississippian Redwall Limestones around Arizona's Verde Valley. They are generally accompanied by lots of Crinoids and solitary Rugose Corals. They're always this oval shape with segmented structure. They look like an isopod, to me, but could be some other crustacean. Any help out there for the identification of these "bugs?"
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Hello all, one of ny early 2022 trips has yielded these little beauties. With some help on the IDs a ghost shrimp claw (Mesostylus sp.) And partial Anomoeodus plate.
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- anomoeodus
- cretaceous
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