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Showing results for tags 'horn coral'.
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Hi folks, I ventured out today and found these in a creek in Monroe County, IN. I've seen (what I think were) geodized fossils at a local show in the past, so I was keen on trying to find some of my own. Attached are some photos. I think one is a geodized horn coral, while the other appears to be a crinoid calyx or blastoid. There is a small horn coral in some of the photos as a reference. These were somewhat common in the creek. I'm not really concerned about species here as they are fairly distorted, just interested in hearing if you think these are, in fact, geodized fossils. Thanks! Jim
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Here's a find from last summer. I originally classified this as a nautiloid, though I think it could be a horn coral too. Unfortunately I'm not very familiar with the inner workings of either and I can't see much that could point one way or another. I do think it's a nautiloid judging by how straight it is, but I would appreciate feedback from anyone with more experience.
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Day Two ; Locality One (or Six if you include Day One) Black Sahara, South of Erfoud 20th February 2019 Well this is where things really get interesting, so stick with this thread as there are dozens of photos of fossils coming up. Looks at the tags if you want clues. I was up bright and early and wandered out at about 7 am to watch the sun rise over the still mighty Erg Chebbi dunes. And as night's candles were burnt out and jocund day stood tiptoe over the misty duney tops, the chaps came to join me and managed lots of photos. Here's one, if you would like to see more, I'm busy posting a kazillion of 'em under the Nature Photography thread.
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This one was found about 1 meter under the soil in Hidalgo County NM while digging for irrigation piping. The area is from the Maastrichtian epoch as far as my research has lead me. It was found directly beneath the soil where my " ocean dwellers" post was found. It's very heavy for it's size, maybe 40 lbs or more. I have spent many hours with this monster perched on my lap and with small tools and nylon brushes (very very carefully)trying to reveal as much as it shows.
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I drive 8 hours with a friend to a location he remembers from his childhood as yielding a lot. Oh boy it did. 100% worth the drive. Lake Huron, among the agates, pyrite, yooperlite, has some extraordinary Devonian fossils. All fossils were collected from the beach of his family’s property except for the fenestelid bryozoan, which was found at a gas station on the way there. please enjoy this collection of gastropods, petoskey stones, various tabulate corals, crinoids, stromatoporoids, bivalves, Brachiopods, tenteculites, horn corals, an unidentified agatized fossil in jasper matrix, and a pudding stone I felt like showing off too. Thanks! I highly recommend the area.
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Found in landscaping gravel at a gas station on a 6.5 hour drive to Lake Huron for some fossil hunting. This is probably Devonian. Instinct tells me horn coral but it looks rougher than that and lacks visible septa at the top. Bryozoan colony? That’s my next best guess. Thanks! Love you guys.
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Impressions in Large Rocks + Coral and Imprint Fossils | New Member
AmuroRay posted a topic in Fossil ID
Hello all – Stumbled across this great site/forum after rekindling an interest in fossils and minerals from my youth. I was able to visit a spot I spent a lot of time in summers as a child with my own children and looking to get them interested as well. Location: Southern Ontario on Lake Erie After doing a little research, according to this map (https://www.geologyontario.mndmf.gov.on.ca/mndmfiles/pub/data/imaging/M2544/M2544.pdf) from the Province of Ontario’s Ministry of Northern Development and Mines, the bedrock is Middle Devonian (from the Detroit River Gp.; Onondaga Fm. – I assume these are the formations?). Though with the glacial activity I don’t know if the rocks below are consistent with that and how that impacts things. 1) Does someone know what the spherical depressions/imprints in the large rocks are? As a young child, I always pretended they were dinosaur egg impressions. I understand now that isn’t the case but they still strike me as interesting I am curious if they are imprints or some sort of naturally occurring phenomenon in the rocks. Given the size and location of some - it would seem they are not strictly erosion activity but no expert here :-) 2) Relatedly, I am curious what the black sections of the one rock might be (red arrows in the picture below) - just another type of rock that settled when the surrounding rock was forming? To my recollection (and other pictures I have) these black "inserts" were not in other similar rocks nearby. These are large rocks 2-3 ft wide x 2-3 ft long or larger – sorry but took them before learning the ways to try to provide scale on the forum and sorry there are not more/closer pictures - I didn't know a community like this existed when I took the picture. I have included some pictures of fossils found nearby. I think they are fossilized corals and a horn coral. The imprint fossil I think is a leaf? I understand that this area was likely a tropical climate 400 million years ago so that would make sense I think. Many thanks in advance! While I don’t have much to share knowledge wise – I do have much to learn and appreciate the community!
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I found this in a small creek by my house can someone help me know what it is
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Hey fossil people... more specifically hey Arizona fossil people. I'm wondering if any of you have run across fossilized horn coral in this state? If you have, tell me about it. I'd love to see examples of what you've found. I"ve found lots of brachiopods and other marine life in Arizona but this is the first time I've found horn coral. The idea that Arizona used to be underwater is fascinating to me. Theyre not the prettiest specimens... but i found them and they're mine! Lol. For those wondering, I found these near Payson Arizona. Same place I've found byrozoans, brachiopods, and crinoids.
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From the album: Silurian Fossils - Giles County Tennessee
Stegerhynchus from the Silurian Period 443 million to 416 million years ago. The Rugosa, also called the Tetracoralla, are an extinct order of coral that were abundant in Silurian -
I went to a locale in Kentucky I'd heard about and did some hunting for blastoids, which I had never looked for before. After about an hour I came away with a bunch of crinoid pieces, some brachiopods, some random bryozoan pieces, a few horn corals, what may be a gastropod, and a bunch of blastoids of at least two different species. On to the pictures. I also included some random odds-n-ends at the bottom. A pile of fossils. Some of the more interesting crinoids. The three on top have some pyrite encrustation. The four on the bottom are interesting because they broke pre-fossilization but are still associated, have bryozoan encrustation, or have hold-fast nubs on them. Close up of pyrite encrusted pieces. Horn corals. Brachiopods. Possible gastropod. Blastoids. Largest is just over 1cm. More blastoids. Largest is just over 2cm. And finally some odds-n-ends found while drilling along the Tennessee River. Everything is from about 80'-100' bgs. Two pieces of oolitic limestone. Weird ball of something. No clue what it is. Really should acid test it at least. (Shown next to one of the pieces of oolitic limestone.) A carapace. I'm not sure if this is old material or if it is recent remains of something living in the subsurface gravel layers. And lastly a chunk of fluoride from NW Ohio.
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If it even is a horn coral? Not sure if it’s possible to tell from this. Found on Lake Erie in Erie Pa. Thank you.
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On our trip out to some Rocky Mountain states this past summer, we found red agatized horn coral in the Uinta-Cache National Forest. Back home, we polished the agate, which is jewelry-grade material and transparent--so real agate, not jasper. Here's the video we created about our trip. Lloyd
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A friend gave me this ... horn coral? collected somewhere in the vicinity of Springville, Iowa, just northeast of Cedar Rapids. Macrostrat has that entire area underlain by Silurian to Devonian marine carbonate rock. Would be nice to confirm it's a horn coral, and perhaps get a more specific identification. Ruler marks are cm. It will be difficult for me to get a deeper macro with the camera I have, unfortunately. (And, if seeing these didn't have you mentally hearing "budda budDa BUDDa budda" played by a heavy brass section, you obviously come from a different generation of geeks than mine.)
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Hello, this is my first post as I stumbled upon this forum attempting to research a fossil my Great Grandmother gave me some years ago. When I was younger, I thought they were teeth of some sort, but after some digging (no pun intended), I am thinking it may be horn coral!? Also, in the second picture I labeled part of the rock #4; it appears to be different from the rest of the rock. Some of it is like a milky matte material and beside it (hard to see in still picture) is a section that glimmers in the light. I wondered if it was some sort of crystal or just another form of a fossil/the limestone. I apologize for any errors that I have made in this description or in the pictures. I would appreciate and corrections, tips or recommendations I could use for potential future posts. If anyone could give me some more information on what I have here, I’d greatly appreciate it. Thank you and have a great day!
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So reading through some old posts and seeing @Jeffrey P finds, I decided to get out today and take a trip to the Dave Elliot outcrops. After digging through what Jeff left behind I decided to take a look around that area. I’ll post more as I get them prepped but here’s a few to get started. Largest intact Horn Coral I have ever found.
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Hello all, and thanks for being here! I am looking for an ID on these fossils for my own gratification! My focus is in archaeology, so I come across fossils often during surface collection adventures! A little about the location: These were found in Nancy, Kentucky, USA on a partially man made flood-control lake called Lake Cumberland (Cumberland river basin/Cumberland plateau). The banks are rich with small to medium chert concretions, fossiliferous sedimentary stones, and small to medium iron inclusions. Preservation of these specimens are, generally, fair to good. I found this piece along with horn corals, only a couple of brachiopods, and a wealth of crinoid stem pieces in less than 20 minutes! I thank you all in advance for any information you can give me! -Skelly B. Specimen 1- Specimen 2 - Specimen 3 -
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Found along the shore of the North Channel at Little Current on Manitoulin Island. Any chance this can be ID'd more specifically? I
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Here is a E. rana fossil I found at Penn Dixie the year after I started collected fossils in 2015. It shows clear evidence of having been partly crushed by a horn coral on pleurites 5 through 10 only on the right side. The curvature of the thorax elements support this interpretation as well as demonstrate remarkable flexibility. This is a specific event that must have taken place shortly before, during or after the demise of the trilobite, while it was still malleable to be so contorted. Pardon the poor prep, I used a sewing pin in a pin-vise to clear away matrix. All images are the same specimen. Some suggest (not only conspiracy theorists) that this may depict - dare I say- a Devonian murder scene caught in the act! (this is where you chuckle). Pretty cool. What do you think?
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I had the opportunity to visit another Silurian site in the northern Georgia/southern Tennessee area. This is now the third such site I've visited, but the first in the Rockwood Formation as opposed to the Red Mountain Formation. As far as I can tell there's very little different between the two lithologically and paleontologically, with the Rockwood and Red Mountain occupying pretty much the same stratigraphic position. The difference seems to be that the TGS prefers to use the term "Rockwood" to describe it's Niagaran Silurian system and the GGS and AGS prefer the term "Red Mountain", mostly because the unit is more differentiable in Tennessee whereas in southern NW Georgia and Alabama it is less differentiable. However, the GGS does use the term Rockwood in some of it's reports, and there are some lithological differences between the more southerly and easterly exposures and the more northerly and westerly ones (most notably in the thickness of the hematite beds), so I'm going with Rockwood Formation for these specimens. I had some difficulty in telling the age of the rocks at first. The geologic map I was using wasn't very accurate, and had both the Rockwood Formation and some upper Ordovician units within close proximity to each other. As you'll see with some of the fossils, there are some forms more associated with the Ordovician, such as Isotelus and Vinlandostrophia (Platystrophia), but at the same time I couldn't help but notice there were some similar characteristics between this fauna and the Rose Hill Formation, such as the calymenid molt fragments, and prevalence of Leptaena, which I did not find in the nearby upper Ordovician rocks (not to say it doesn't occur in the Ordovician, just that I didn't find it). Combined with the presence of Eospirifer and the thin beds of iron-rich sandstone and ferruginous limestone, this site is most likely in the Silurian Rockwood Formation. However, in my opinion, it appears to host an earlier, transitionary fauna than the Rose Hill. The collecting itself was pretty easy. The weather was nice, the site not too hard to explore, and the fossils easily extracted from the rock. Most of the exposure was unfossiliferous, however every now and then I'd come across a little part where there'd be a densely packed assemblage, with some loose specimens scattered about. The shale and thin limestone were the most fossiliferous. The first up are some of the brachiopods. A couple of different species it looks like, both tentatively of the genus Dalmanella sp. The report I'm basing this on is pretty old so that name probably no longer applies, however. These are pretty good examples of the more Ordovician forms present at this site. Although Vinlandostrophia (Platystrophia) sp. does occur in the Silurian as late as the Waldron Shale, it is definitely more common in the Ordovician, where V. ponderosa forms veritable coquinas in the upper Leipers Formation. It's a bit hard to see in the bottom one, but it does have a sulcus, unlike most of the Dalmanella sp. present. A few Leptaena sp. Although it is known from the upper Ordovician, I have not found it in the Ordovician rocks nearby and have found several in the Silurian Rose Hill Formation. It is interesting to note that there are such similarities between the two early Silurian fauna across such distances. One characteristic I quickly noticed was that a lot of the specimens in this area occur as loose shells, whereas in Maryland and Pennsylvania they're often internal molds wedged in rock. It makes for easier collecting, and more photogenic fossils! I'm going to go out on a limb and say this is Dalmanella elegantula(?) Pretty good preservation on this one, but I'm not quite sure about it's ID. Maybe some kind of Chonetes (?) sp. Eospirifer sp. with crystalline preservation.
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From the album: Lime Creek Devonian Rockford Iowa
For now I'm just generally identify as Homalophyllum. And some people said they have trouble finding horn corals but for some reason as this massive pile shows, they're easy for me! SW corner are some largest and smaller specimens. The larger ones are easier to find and thus are the rarer while one inches and less seem to be the hardest for people to find. -
Some more fossils that I acquired from fellow members of the local rockhound club, a couple who spend their Winters down there (except this past Covid year). I've got the location info but not the accurate stratigraphic info nor IDs. These are from two different locations in the Payson area. According to the maps in Gem Trails of Arizona (which the couple used to find the sites), the horn corals are from a spot along a road on the way to 'Agate Mountain', and the colonial types are from Houston Mesa, "right at the top of the hill". I don't know if the two locations are the same formation, or...? (I guess they are all Naco Fm/Group(?) but more specific info is harder to find and I can see myself spending several more hours tracking it down.) Agate Mtn: Houston Mesa:
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https://www.bbc.com/news/uk-england-birmingham-56554925 I have no idea what that coin is.
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From the album: Corals of Decorah Minnesota
Platteville formation Lambeophyllum profundum. Outer laver are gone. Uncommon to rare. -
From the album: Corals of Decorah Minnesota
Lambeophyllum profundum common decorah formation,, uncommon to rare platteville formation. Very variable in size, with one inch being average, 2 to 3 inches at the biggest.
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