Bonehunter Posted April 2, 2020 Share Posted April 2, 2020 Here is my next one that, as best I can tell is mineralized/geode-type horn coral? Also found in the St. Louis area when I was a kid. Am I correct? thanks!! Bone Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 2, 2020 Share Posted April 2, 2020 Looks more like a root cast or infilled burrow to me. Not seeing any rugose coral structure. 3 1 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Bonehunter Posted April 2, 2020 Author Share Posted April 2, 2020 Great!- thanks- I thought possibly the septa were mineralized out. Burrow or root sounds more fascinating anyway!... Bone Link to comment Share on other sites More sharing options...
Bonehunter Posted April 3, 2020 Author Share Posted April 3, 2020 This is one my "true" horn corals, also found in Kansas City- just thought the conical shape of the larger find was simply a heavily mineralized coral, but I defer to your expertise!- thanks again! Bone Link to comment Share on other sites More sharing options...
KOI Posted April 4, 2020 Share Posted April 4, 2020 I agree with Fossildude19. You should see septa or some kind of central structure. My guess it's likely an elongated geode or probably a fossilized sponge. Here is video with horn corals for comparison: Link to comment Share on other sites More sharing options...
TqB Posted April 4, 2020 Share Posted April 4, 2020 It could well be a coral - centre structure isn't always visible in a given section and can be dissolved out and recrystallised too. Septa can be very short and almost hidden in the dissepimentarium - there are what look like bubbly dissepiments in this area, but clearer photos and maybe sections would be needed to be sure either way: Tarquin Link to comment Share on other sites More sharing options...
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