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Showing results for tags 'Bryozoa'.
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This is an odd little rock that I found at my son's land in Franklin County today, near Lost Creek (Alabama). I am seeing what I think is an area of bryozoan fossils of some sort on it, but then I saw this tiny little shape that is encased inside of something else. I thought it was a brachiopod at first until I looked up closed with my trusty macro lens and saw teensy dots along the edges. Is this another type of bryozoa? And, if so, why is it encased inside of something? Thanks!! Ramona
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A few months back I won an auction from @sixgill pete and part of the lot was a bag of matrix from the Waccamaw Formation in Columbus County North Carolina. The Waccamaw Fm. is a marine sand and shell hash that has been correlated numerous different ways with a varying range of ages applied to it in the past, but as it is currently interpreted, it is Pleistocene in age (Gelasian and Calabrian Stages or Upper Blancan to Irvingtonian if you prefer the NA names) and found in South Carolina and southeastern North Carolina. The bag was chock full of molluscan goodies and I am steadily working through the identification of those. One thing that caught my eye amongst all the shells were these little saucer shaped bryozoans similar to Lunulites except that most had a little grain of sand at their center. They are small (generally 2-3 mm in diameter, largest one is 7 mm across), but there were several hundred of them. After staring at them under the microscope for long enough, I recognized that there were at least two different types in here. Here is a shot of my sorting tray with all of them in there. A quick check of the two great publications I have from the North Carolina Fossil Club gave me some excellent pictures but three different names. A check of WORMS showed me that only one of those names was currently accepted so I began my search to see what was what knowing full well that bryozoan identification can be difficult and involves a lot of terminology that I am not well versed in (I have to admit, when ID’ing my collections, I am prone to lump the Paleozoic bryozoans from a given locality in one container and just be satisfied with that). A search of threads on the Fossil Forum led me to a couple where they were mentioned, but no defining pictures or ID’s. Here are a few pictures of what we are dealing with and I will apologize right from the start for the poor quality pictures. I really have to get a better setup for taking microfossil pictures since I tend to deal with small stuff a lot. I have decent microscope where I can look at them, but it is not set up for pictures. These are the two more easily identifiable forms, the picture on the right shows two of the same species but in one you can see the sand grain that is the starting point for the bryozoan, it sometimes gets covered or lost in growth and/or fossilization. So, after gathering and reading through a bunch of references from the early 1900’s onward I think I have the correct ID and most current name, but am open to any suggestions from those familiar with these little creatures. At the very least, hopefully this can serve as a helpful guide to someone who may have come across these, but struggled to put a name to them. There is a great publication by Canu and Bassler (1923) called North American Later Tertiary and Quaternary Bryozoa which provides lots of information, plenty of descriptions and enough illustrations to find both of the forms I had recognized. Specifically, they identified a species called Cupularia denticulata from the Waccamaw Fm and its description matched the form on the right above (just to make things interesting, there was another genus of similar bryozoa called Cupuladria, yes, just one letter different – ugh!). From this publication I had a potential name for the two types, could see where the names in the NCFC publications were coming from, and just had to track down what had changed in the intervening almost 100 years.
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- reussirella
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I am looking for the following document which I can't find online through any of my usual sources (JSTOR, BHL, etc), any help would be appreciated. Thanks in advance COOK, P.L. and CHIMONIDES, P.J. (1994), Notes on the family Cupuladriidae (Bryozoa), and on Cupuladria remota sp. n. from the Marquesas Islands. Zoologica Scripta, 23: 251-268.
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Hello folks! In Kaliningrad dark and cold time. Even colder on beach. So this last trip report in this season. For first it's search places. This is Svetlogorsk.
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I hope this is allowed in the Fossil ID portion of the forum. I have learned so much here that I just want to "give back" for a moment. I am a photographer by trade and I want to share a few photos that show the beauty of bryozoa - trepostome bryozoan fossils in this case (thanks to the help from folks on this forum!) These are not huge and monumental discoveries, but the more I study them, the more I am fascinated by them. The more I learn, the more I NEED to learn. These creatures are beautiful in form, color, and substance. I have no questions in this post - just wanted to say THANKS in the way I know best - through my photographs! These are macro photographs - up close and personal with a very large, bryozoan loaded rock from Pulaski, TN. I am not reducing the resolution as much this time, so this will take a few posts. Blessings! Ramona
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I am on a mission to determine if I have different types of fossils in the bottom of our creek bed than I do in the rocks in our yard. This is the first rock I have photographed and I saw a bryozoan fossil I didn't recognize! At least I think it is bryozoan... I have learned not to make assumptions... I recognize the fossils on the right of the photo as fenestellate bryozoans. The portion on the left is what I am not sure about - the honeycomb like part. It has some of the characteristics that I am used to finding in the fenestellate bryozoan fossil rocks, but it also reminds me of the trepostome bryozoan, since it has the appearance of being encrusted. I also read about Monticulipora bryozoa and lamellar cyclostome but I don't have the depth of knowledge to know the difference. And then there is coral? Honeycomb coral? Seems like this is too small? The small rock on top was part of the rock at first but it fell off when I was cleaning it. with a toothbrush and water. Also, as a bonus question - I get those, right?!! - what might the two types of lines on the side of the rock be? There is one type that is a single dashed line but the other one is a pair of dashed gray lines that separate and then come back together. There are quite a few of each of these on the rock - I can provide better photos if needed for identification. For those who have not been bored by my bryozoan posts yet, LOL, this rock was found in Huntsville, AL. Thanks!! Ramona
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For the Columbus Day weekend my girlfriend planned a three-day trip down to Southwestern Virginia as a birthday present to me. The plan was to do a little sightseeing, go on some hikes, enjoy the fall foliage, and, most importantly, collect some fossils. Unfortunately Hurricane Delta had other plans for us. As the weekend approached it looked like the entire weekend would be soaked with rain. We tried to change our reservations, but we were not allowed to postpone. Not knowing what to expect for the weekend, we made our trip. Sunday was to be my big day of fossil collecting. It was also the day that Hurricane Delta was expected to pass through Southwestern Virginia... Lucky for me, luck turned out to be on my side (at least in part). I had an all-day fossil trip planned, but due to the weather, I had to cut the trip in half. After a later start to the day than I had hoped for, we headed towards two sites that I had identified for the day. Both were exposures of the Middle Ordovician Benbolt Formation. A few showers on the drive but for the most part the rain held off while we collected. Our first stop was a large, open road cut. The limestone there is just covered with brachiopods, trilobite pieces and bryozoa I thought the number and orientation of all of the bryozoa in this hash plate were very cool There were a lot of bryozoa at this site. Some small and some large, like these pieces of Mesotrypa sp. and Batostoma sevieri My favorite bryozoan found here though was Ceramoporella sp. This piece of Corynotrypa inflata comes in a close second. This bryozoan is encrusting and was often found on the inside of loose valves of Strophomena sp. I am still trying to identify all of the brachiopods. I believe the left and bottom center ones in the second photo are Rafinesquina champlainensis while the right most one is Multicostella platys Another really interesting fossil was this undetermined sponge One of the unfortunate things about this site is that because it is so exposed, the fossils there weather very quickly. This is most apparent on all of the trilobite pieces. Here are two cephalons and a pygidium of Illaenus fieldi I think this is a right cheek and eye of Eoharpes sp. Here is an additional mystery trilobite piece
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From the album Aurora/Lee Creek Mine Micro Matrix
Discoporella ? Pliocene/Pleistocene from Aurora Fossil Museum micro matrix Aurora, North Carolina Thanks to @Al Dente for the ID -
Recently I have taken interest in fossil hunting after discovering a plethora of fossils from some farmland in Southern Indiana. It is my understanding the fossils are from the Devonian period. My grandsons (5 and 6 years old) and I have collected several specimens I’ve the last couple of months. I have been searching the Internet for weeks trying to correctly identify our finds and just when I think I have something identified —I find other possibilities. I would like to make displays for the grandkids and label our other collections appropriately. I am in hopes this community would help identify the specimens, and provide advice on how best to label the fossils. I appreciate any assistance that can be provided. Thanks. —Bill Shingleton PS: All the fossils depicted are from Jeffersonville, IN.
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Hello, FFers: I'm wondering if anyone can tell me anything about these filamental fossils from the U. Ord of Kenton County, Kentucky. Given the structure under the mike, I'm guessing bryozoan, but I'd never seen anything quite like this before. Can anyone tell me more? Including, maybe, an ID? (Or a different direction, if I'm wrong about their being bryozoa.) The scale in the first pic is in mm. Thanks!
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From the album Lower Devonian Helderberg Group in Eastern NY
Fenestella crebipora from the New Scotland Formation. -
From the album Lower Devonian Helderberg Group in Eastern NY
Cerampora maculata from the Kalkberg Formation. -
Last weekend I got a chance to do some fossil hunting in a creek in Greene, New York. I am a unsure if the exact formation I was in but I know it was upper Devonian. Brachiopods were quite abundant, especially spiriferid ones. I also found a couple nice bivalves and some bryozoans/corals.
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I was able to get some much needed "me time" yesterday. With all the worries of the world I have been in a foul mood lately, but I am happy to report that my mood has brightened significantly. . There is nothing like crawling around on a road cut, and hunting fossils, to really lift one's spirits! I spent a couple of hours at an upper Ordovician road cut that has been on my list to check out. It is an exposure of the Grant Lake Limestone. Shortly after I arrived, I realized that I was in for a real treat! This particular exposure is more fossil than limestone. Brachiopods are everywhere! Vinlandostrophia dominate the exposure; with Hebertella coming in a close second. Other brachs are also found, but less abundant. Orthoconic nautiloid fragments are frequently found and bryozoan encrusting is a common sight. I also found a few gastropods, and one trilobite piece that I am excited about. Unfortunately I did not take pictures in the field. It was a conscious decision. I just wanted to enjoy my time, relax, and focus on the hunt. I'll get some next time as I will definitely be going back. I did take a few pics of my better finds at home. Enjoy! First up are the Brachiopods. I found some nice whole Vinlandostrophia, and Hebertella, and what I think is Rafinesquina ( @Tidgy's Dad ) . I also took home a few single valves for study of the internal structure. I think with a little bit of clean up these will look great! I was happy to find some orthoconic nautiloids. They have been sorely lacking in my collection. I will have to research what species are found in this formation to come up with an ID. I have a few ideas, but need to confirm. Here are a few gastropods and bryozoans. I can't resist the alluring whirls of a gastropod. They seem to be uncommon in the areas that I hunt so I grab them whenever I see them. I believe these are new species of bryozoa that I will be adding to my collection. Which is exciting! Here is a tril-o-bit that I found. I'm very happy with it. Typical trilobite fragments from this area are not usually identifiable. Except to say they are possible trilobite pieces. This is a cephalic doublure of an Isotelus. Thanks to @piranha for help with the ID. All in all it was a great time. I got to relax a bit, forget my troubles, and brighten my mood. I also added some nice pieces to my collection. It was a good day!
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My first attempt here. I'm having a great time exploring the Mogollon Rim area near our home here in Arizona. The Kohl's Ranch area near Payson is famous for its Carboniferous brachiopods, but I have a piece that has obvious bryozoans. But in this photo there are two pieces that are "fern" shape. The longer of the two is about 1/2 inch long. They have me stumpred.
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New data on the intergrowth of Rugosa-Bryozoa in the Lower Devonian of North Gondwana Yves PLUSQUELLEC ,Françoise P. BIGEY Carnets Geol. 19 (18) Creative Commons License DOI 10.4267/2042/70538 PDF LINK
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Help request! I am putting together a tool for judging rock age based on very crude, whole-rock, hand-sample observations of fossil faunas/floras -- the types of observations a child or beginner could successfully make. I view this as a complement to the very fine, species-level identifications commonly employed as index fossils for individual stages, biozones, etc. Attached is what I've got so far, but I can clearly use help with corals, mollusks, plants, vertebrates, ichnofossils, and the post-Paleozoic In the attached file, vibrant orange indicates times in earth history to commonly observe the item of interest; paler orange indicates times in earth history to less commonly observe the item of interest. White indicates very little to no practical probability of observing the item of interest. Please keep in mind that the listed indicators are things like “conspicuous horn corals,” purposefully declining to address rare encounters with groups of low preservation potential, low recognizability, etc. Got additions/amendments, especially for the groups mentioned above? Toss them in the comments below! Thank you..... https://docs.google.com/spreadsheets/d/1tVm_u6v573V4NACrdebb_1OsBEAz60dS1m4pCTckgyA- 5 replies
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№1 Found this fragil formation on the right bank of the Dnieper river, Ukraine, Kherson region. Look like this Bryozoa.
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I recently purchased some Mid Devonian silica shale pieces with trilo-bits from @connorp. And by recently I mean last month... last year..(January is always confusing that way). Just several small pieces with partial molts I'm using for practice prepping. So after picking at a few all year... one of them has gone from a practice piece to an almost show piece. 1st pic is the original sales pic with the piece circled. In it you can see part of the trilo-bit, but not really anything else. I got a nose w/ a partial eye (base only), bryozoa scattered about here & there, some tiny crinoid pieces and a thing I can't decide on. Pic labeled with a 1 is an overall shot, 2 is a close up of the nose, 3 is a bryozoa (I think) & 4 is the question one. The entire stone is 7.5 cm x 6.5 cm. Nose is 1 cm wide, the small bryozoa fan thingy is 0.5 cm wide & the question one is 2.5 cm long. I'm using a needle in a pin vise, fine scribe tip in another pin vise, dental picks & a stiff(ish) nylon brush with hydrogen peroxide, 3x led magnifying lamp & 10x loupe.
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I would highly appreciate your opinion about this formation . Marine , Pliocene or Pleistocene age, Greece . Could be algae , bryozoa ?
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Show us your Devonian Epizoans & Pathological Brachiopods!
Brach3 posted a topic in General Fossil Discussion
Dear all, if Devonian Epizoans (Epibionts) & Pathological Brachiopods (all the periods) are a fascinating group of fossils for you and you want to discuss anything about their paleoecology, please post your photos (specimens) in this thread.- 107 replies
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Hi All, I picked up this rock in my back yard a couple of days ago. I picked it up because I saw a couple cross sections of rugose coral and some fenestrate bryozoan fossil pieces. When looking at it later, I noticed this feature. I haven't found anything like this before. Is this just a different type of bryozoa? These little marks also look like some tiny Platycrinite crinoid pieces. This was found in Howell County, Missouri, USA. It came from the Ordovician Period. These lines measure approximately 23mm in length and measure approximately 0.79mm wide. The individual spots are oval in shape and measure approximately 0.38x0.79mm. I don't know if it shows well in the first image, but this feature appears to be in a fracture in the host rock. There is still some rock covering the feature in the fracture. Any assistance or direction that you can give me is greatly appreciated. Thanks for your time, Doug
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Are these two samples (from northcentral IN) bryozoans? The first image is 18 cm x 12 cm; the second is egg-shaped, same dimensions but has a dome. Thanks!
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