oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,578
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Post by oldschoolrocker on Jan 29, 2020 16:18:41 GMT -5
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Post by rmf on Jan 29, 2020 21:35:51 GMT -5
Yes that is coral
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zarguy
fully equipped rock polisher
Cedar City, Utah - rockhound heaven!
Member since December 2005
Posts: 1,791
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Post by zarguy on Jan 30, 2020 0:59:13 GMT -5
Yes, It's coral.
It looks very similar to red horn coral found in Utah.
Lynn
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Post by fernwood on Jan 30, 2020 3:38:52 GMT -5
Agree that it is a tabulate. Unsure of specific species.
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Post by rockpickerforever on Jan 30, 2020 6:06:33 GMT -5
Yes, It's coral. It looks very similar to red horn coral found in Utah. Lynn It is horn coral, which is a solitary rugose coral. It is not a tabulate coral. Rugose corals are an extinct group of anthozoans that originated in the Ordovician and went extinct at the end of the Permian. Members of the Rugosa are sometimes called horn corals because solitary forms frequently have the shape of a bull's horn.  Tabulates, subclass or order Tabulata, are extinct corals of anthozoans. Tabulates, unlike rugosans, were always colonial organisms. Class Tabulata—the "tabulate corals"— originated in the Early Ordovician period and went extinct at the end of the Permian period. All tabulate corals were colonial and some species were important reef makers during the Silurian and Devonian periods. Their skeletons were constructed primarily of calcite. Some tabulate corals look superficially like honeycombs (e.g., Favosites), while others look like chain links (e.g., Halysites) or collections of narrow tubes (e.g., Syringopora). |
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oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,578
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Post by oldschoolrocker on Jan 30, 2020 7:27:05 GMT -5
Yes, It's coral. It looks very similar to red horn coral found in Utah. Lynn It is horn coral, which is a solitary rugose coral. It is not a tabulate coral. Rugose corals are an extinct group of anthozoans that originated in the Ordovician and went extinct at the end of the Permian. Members of the Rugosa are sometimes called horn corals because solitary forms frequently have the shape of a bull's horn. Tabulates, subclass or order Tabulata, are extinct corals of anthozoans. Tabulates, unlike rugosans, were always colonial organisms. Class Tabulata—the "tabulate corals"— originated in the Early Ordovician period and went extinct at the end of the Permian period. All tabulate corals were colonial and some species were important reef makers during the Silurian and Devonian periods. Their skeletons were constructed primarily of calcite. Some tabulate corals look superficially like honeycombs (e.g., Favosites), while others look like chain links (e.g., Halysites) or collections of narrow tubes (e.g., Syringopora). Ah, rugose coral it is. I appreciate all the information! Thanks! |
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oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,578
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Post by oldschoolrocker on Jan 30, 2020 7:30:58 GMT -5
Yes, It's coral. It looks very similar to red horn coral found in Utah. Lynn Thanks, I knew there was a similar coral used in lapidary work but seems all I ever found when looking online was indo coral and a few red horn coral pics that were way cooler looking than my little piece. |
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oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,578
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Post by oldschoolrocker on Jan 30, 2020 7:42:37 GMT -5
Thanks for the input everyone. While this lil guy isnt as cool as the other piece of coral I found in San Jacinto River, it gives me Hope that more and better pieces can be found there. Guess now I can tell my brother that the original piece of coral I found there wasnt likely dumped there by someone in modern times(his opinion) but rather just another cool rock of unknown origins that ended up in these gravel deposits.
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Post by fernwood on Jan 30, 2020 8:00:25 GMT -5
Thanks for the correction. I had a geologist ID a similar piece I found as tabulate. He also ID'd some pieces I found as horn coral.
Am learning that some members here are better at ID-ing fossil corals than local geologists with specialties in local fossil coral ID.
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oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,578
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Post by oldschoolrocker on Jan 30, 2020 8:24:30 GMT -5
Thinking about cutting it vertically, in the hopes that the stacked block like structure is more defined and visible. If so, il try to make daughter another pendant since she really loves the ones I made her from other piece of coral we found. Thanks again for everyone's input and information! I know google exists but I'm about as good at identifying rocks using google as I am at self diagnosing medical conditions using WebMD......funny quick story to prove my point- cpl years ago I had some unusual symptoms pop up on and off for Cpl weeks and with no insurance at the time i searched the internet for an answer- for which I wasnt able to find more than this one answer for- which was "saggy brain syndrome" no lie....for which treatment requires minor Brain surgery to basically give your brain a face lift. After few minutes of being convinced and worried I had saggy brain syndrome I realized this is exactly why shouldnt use internet to self diagnose...
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oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,578
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Post by oldschoolrocker on Jan 30, 2020 8:37:46 GMT -5
Thanks for the correction. I had a geologist ID a similar piece I found as tabulate. He also ID'd some pieces I found as horn coral. Am learning that some members here are better at ID-ing fossil corals than local geologists with specialties in local fossil coral ID. I know what you mean. I actually was just reading a long thread on a fossil related forum where there was a hearty debate regarding tabulate and rugose corals, identifying features, etc....and after reading whole thread, I couldnt tell if any consensus was made between the parties debating.... regardless of which one it definitively is, I've learned more about both than ever would have before making this thread. And, yes, the members here routinely impress me with their knowledge and expertise on not just rocks, but across a wide range of subjects! |
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