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Showing results for tags 'bryozoan'.
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Hello there! I took advantage of the nice weather we've been having to visit Mimico Creek in Toronto, Ontario (Georgian Bay Formation, Upper Ordovician) yesterday afternoon. Here are some photos of specimens that I'd like help identifying - perhaps @Tidgy's Dad would like to have a look? Firstly - the whole rock which contains the bryozoans and the unknown black objects: Specimen #1: a nice branching bryozoan - perhaps Homotrypa? Specimen #2: a nice encrusting bryozoan (there are actually two of them) - perhaps Mesotrypa? More to come...
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Age is Miocene-Pliocene. Bryozoan is an immediate thought, but I'm pretty sure that they're quite rare post Paleozoic, and this kind of encrustation is very common in the locality where the specimen was found. Here is a picture: Bonus thanks if anyone knows with some certainty what the bivalve itself might be from the photo, though I doubt it.
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Today I was able to get out to the outcrop along Rickard Hill in Schoharie, New York. I didn’t find a ton of interesting things because I was looking in a more crystalline layer of the Kalkberg formation that had less abundant fossils. I found a handful of nice orthid, spiriferid, and atrypid brachiopods and one fenestellid bryozoan. Next time I go I’m going to try and get into a different, more fossiliferous layer because the crystalline rock is hard to break and when it does it breaks randomly, often damaging the fossils.
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Today on a hunt in the lower devonian of new york, I found on of the most unusual piece and I can't decide if its bryzoan or possible placoderm.
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Could someone identify if these are bryozoans attached to this bivalve from the Faringdon sponge gravels UK please. Scale bar millimetres.
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With all of your help, I am learning to better identify fossils in the rocks I pick up in my yard - mostly bryozoan and crinoids. Boring to most folks, but still fun for me, LOL! I picked this rock up assuming it was a non native one, but then decided to get my macro lens after it to make sure. I need your help! Do you see any bryozoan or crinoid fossils in these macro photos? I didn't think so at first, but then I started wondering about some tiny things I was seeing. So, if no one sees any fossils, I will just go back to my original idea - that it is a non native rock to our yard. I would also love to understand a bit about how a rock like this is formed! It is a gorgeous rock and I would be happy to post a photo of the whole thing if anyone is interested. Thanks! Ramona
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I've got this segment of ammonite chamber apparently nicknamed a "cats claw" due to its appearance. It's from the Faringdon sponge gravels. I'm interested to find out what it is attached to the ammonite chamber. Information I've read regarding the Faringdon sponge gravels is quoted below if it's helps. "The sediments of the Cretaceous, Lower Greensand Formation were deposited in a tidal strait some 114 million years ago (Aptian Age). The palaeo-channel of this constrained seaway was scoured from the Jurassic bedrock and quickly colonised by bryozoa, sponges, brachiopods, bivalves and echinoids. Storm surges are thought to have periodically ripped the biota and regolith, mixing the sponges and bryozoans with Jurassic rock and fossil material to form the sponge gravels." The sediments of the Cretaceous, Lower Greensand Formation were deposited in a tidal strait some 114 million years ago (Aptian Age). The palaeo-channel of this constrained seaway was scoured from the Jurassic bedrock and quickly colonised by bryozoa, sponges, brachiopods, bivalves and echinoids. Storm surges are thought to have periodically ripped the biota and regolith, mixing the sponges and bryozoans with Jurassic rock and fossil material to form the sponge gravels.
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I have so many rocks that I often like to take one and remove as much matrix as I can, to learn more about it. This rock was very interesting! The limestone was very soft and I know for a fact that I removed plenty of small fossils along the way, but I thought I was digging a geode out of the rock (the "original" thing was the dark area). After cleaning thoroughly with vinegar and a toothbrush, I started removing all soft matrix with a dental pick. I was surprised to "break through" to a totally different geode than the one I thought I was digging out! Part of this new geode broke off later, but I was able to see the inside well! :-) I also discovered what seems to be a nice bryozoan fossil? I never did figure out what the original item was - it may still be a geode, but I have stopped for now. I may have seen this before, but just though it was interesting to see the geode and fossil in the same rock. Found in Huntsville, Alabama.
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A couple of recent finds from Easten North Carolina, Castle Hayne Formation. Scale divisions on all pix are 1 mm. The first specimen is brachiopod, I have it ID'd as Eucalathis sp. Can one of our experts confirm or correct? Second specimen(s) I really have no idea, other than possibly bryozoan, but I can't see any surface apertures. The first pic is of two nearly identical specimens and the remaining pix are of just one. The specimens are not domed, the top surface is a pebble-like texture and the opposite side is a sandy texture. The dark "object' in the center is actually a hole that goes completely through. (Last pic is a profile of it mounted in a pc of putty - sorry for the poor quality picture(s)!) What do you folks think?
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Back in April 2017 I posted pics of what I thought was a unique bryozoan encrusted horn coral.... Since then I have come across more while collecting in SW Ohio that I'd like to share. And, yes, the prep can be extensive. The first one, there is no real top/bottom or side view. It is 7 cm across x 10 cm "tall" This one is 4.5 cm across x 4.5 cm "tall". I believe the bryozoan on the following is Constellaria florida This one is 5.5 cm across and 6 cm "tall" This last one is my favorite. I finished prepping it in early March. I think the layering of the bryozoan is amazing. It is 7 cm across x 9 cm "tall" x 4 cm "deep". The horn coral is broken.
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Hi everyone this is matthew again in the creek today I was fossil hunting and found a very nice bryozoan fossil here is a photo
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I spent yesterday trying out a location along the southwest corner of Tug Hill Plateau in Oswego County NY. There is a road cut exposure that is very weathered. Lots of crumbly mud- and silt-stone, interspersed with sandstone. I couldn’t get very low on the exposure because the river that the highway crosses was high, no shelf or margin of error to climb down. On the Rockd app, this is supposed to be late Ordovician Pulaski and Whetstone gulf, and I wanted to find trilobites. I think I found one fragile flexicalymene, Prasopora (chocolate drop bryozoan), and a big orthocone. Very few trilobite remains in any layer I examined. I hope to return this summer when the water of the river is low...
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I'm not sure if folks would like to do this or not, but I thought it might be fun to have a run of "I Spy" with a large fossil-rich rock that I recently found in our yard. Experts and newbies both welcome! This rock weighs 4 pounds and measures about 6 inches by 5 inches. These are macro images - all from the same rock. Check them out and see what you can "Spy" in each image! Look closely - very closely! And think in 3-D format! ;-) A bit of background - this rock was found in Huntsville, Alabama and is likely mostly limestone. I mostly find fenestellan bryozoan, crinoid, and coral fossils, with a few bivalves. So, surprise me with what YOU see in these photos!
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Along with being a newly avid fossil student, I am also a stock photographer. I would like to submit these images for stock images, but I want to make sure that I am identifying them correctly. You guys have helped me learn EVERYTHING you see here! All of the names and labels, I learned here! Please let me know if I am missing any thing or have mislabeled any of these? I have numbered them to help with the identification. Thanks so much! Ramona
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My grandson and I found this chunk of fossiliferous limestone in our yard today and I cleaned it with vinegar, but it is very crumbly. I can tell that it contains mostly fenestellan bryzoa and crinoids, which is what we find most of in our yard. What is the best way to preserve this fossil to keep it from crumbling? I am hesitant to clean it anymore due to the fragility of it! Thanks! Ramona
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I continue to be amazed at the plethora of fossils in our yard, so I tried an experiment. I raked up some rocks that were around a tree in our front yard and half filled a five gallon bucket with them. I figure that some of them were brought in as decorative rocks, but to test that theory I grabbed two from the top at random. I cleaned them with vinegar and water and then photographed them with my macro lens. They are at least a different type of rock than I am used to seeing (not all of these are different, but those two were). I mostly see limestone, but I will post photos of these in the comments. They look like quartz to me? Or are they a different type of limestone? And maybe I am imaging it, but I think I am seeing some crinoids and bryozoans in them? If no one else sees them I will circle what I THINK are fossils for further verification. Is it odd to find an area so rich in fossils? Or am I odd in that I am looking so closely for them, LOL? I guess since this area was once covered in water, it is likely "normal" to find bryozoans and crinoids everywhere I look, right? Thanks for all input! I learn so much here! (And I won't be surprised to hear that the following photos really ARE rocks that were likely brought in as decorative, LOL!) Ramona
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In my continuing adventure in our yard, I decided to scoop up a few tiny rocks today and examine them. This one was not much of a surprise. Am I correct in stating that it is a tiny bit of fenestella bryozoan? (measurements are in mm). Found in Huntsville, AL - I have found lots of fossiliferous limestone in our yard to date. It's the next one that puzzles me most... Thanks!| Ramona
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From other examples I have seen, I think these are bryozoans (sp?). Is that correct? The first example in question is the one exhibiting pencil-like structure in the center of the rock. In the second picture (of the same specimen), there seems to be a porous structure shown. The shadows may look like the mold is raised from the rock, but it is not. The fossil is an imprint (concave into the matrix). I think these are from the Upper Devonian Mahantango Formation. Thanks
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I have been able to identify (with your help) a few of the fossils we found while hunting at Beltzville state park. This is something that may be something. I tried to get the six-sided pics as recommended. What might this be (if anything)? Beltzville State Park in Pennsylvania, USA. I believe these come the Upper Devonian Mahantango Formation. Thank you.
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I didn't take part in the Secret Santa this year but it almost feels like I did, as I received a package from @Nimravis the other day (not a surprise, I knew it was coming, but the timing was right for Christmas) - Edrio's from the Bobcaygen formation. Thanks again Ralph! I could us a bit of help with IDs. I guess they could use a bit of prepping to make them easier to see, but maybe someone can recognize them the way they are. I figure #3 is Belochthus orthokalus, and #4 is Cryptogoleus chapmani, but not sure of the other two. Is #1 a smaller Belochthus? It looks like there are two there but the 2nd one is even more buried so it may not be identifiable. And is #2 a larger Cryptogoleus, or something else? Also, what is the small discoidal bryozoan?
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It's me again! And I promise that this is NOT a piece of concrete! ;-) (Joke from previous post.) This is the bottom of a limestone rock that has a lot of bryozoan fossils in it, found in our yard in Huntsville, AL. Do the holes look like trace wormholes? Or could they be from the digestive systems of the fenestalla bryozoans? I can get a closer photo tomorrow, plus photos of the rest of the rock if that would help. I left this one in the yard, but I know where it is! Thanks! Ramona
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I occasionally pick up a few bryozoan when hunting for "fossils", but they must have something about them that are intriguing. These two specimens caught my eye and were collected from a road cut in southern Indiana. There is Kope overlain by Belleview, Ordovician. After studying possible bryozoan that match, I am not sure of an ID. So let me know your thoughts. Mike First: Second:
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Hello again, I found these 2 rocks this morning on my property. Redwall limestone, Mooney falls member, Arizona, Mississippian. I think the tiny branch looking thing might be bryozoan and I don't know if the bumpy rock is anything at all. What do you guys think, are these just weathered rocks?
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This is from the southwest side of the York river a short way upstream from the bridge in Yorktown, VA. And I do mean up, stream. The bank is rip rap ! Something appears to have settled on this bryozoan while it was alive ? Scale is in mm.
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Sorry I haven't been on the forum in a while since I've been working like crazy. After a 71 hour week last week I took a day off. My new job is a driving job around my local area so I make notes of places to revisit to rockhound ( I also do some while on layover time but its hard not to get dirty!). I went back to one today, It is a Bralier Shale (Devonian) exposure. Here's where I need some help. Are the tube things #3 corals or bryozoans? Any id's on the other things would be appreciated. Scale on all is centimeter.
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