Mart1980 Posted May 27, 2022 Share Posted May 27, 2022 While on vacation in Utah USA, a family member bought some fossils in a shop that were supposed to be petrified wood. Unfortunately, she has not received any further information with the documents. Is there anything more to say about these pieces? Or is this something else? They go to a primary school when it comes to wood material so any bit of information would be nice for the kids. Scale in centimeters. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted May 27, 2022 Share Posted May 27, 2022 (edited) No wood pattern or texture visible. The weathering pattern of fine rills suggests that the rock is a carbonate such as limestone or dolomite. Does the rock fizz in pool acid? How hard are the rocks; does a metal knife scratch them? Edited May 27, 2022 by DPS Ammonite My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Mart1980 Posted May 27, 2022 Author Share Posted May 27, 2022 The stone is very hard. doesn't look like limestone to me. A few more photos to clarify. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted May 27, 2022 Share Posted May 27, 2022 Can you scratch it with a steel knife blade? My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Mart1980 Posted May 27, 2022 Author Share Posted May 27, 2022 4 minutes ago, DPS Ammonite said: Can you scratch it with a steel knife blade? No not very easy Link to comment Share on other sites More sharing options...
Fossildude19 Posted May 27, 2022 Share Posted May 27, 2022 Looks more like some sort of infilled burrow or root cast, than petrified wood, to me. 1 2 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...
HuckMucus Posted May 27, 2022 Share Posted May 27, 2022 baculite? Link to comment Share on other sites More sharing options...
jpc Posted May 27, 2022 Share Posted May 27, 2022 1 minute ago, HuckMucus said: baculite? I think HucMucus got this one right. The weird texture is weathering. I have seen this sort of thing in my local baculite fields. Link to comment Share on other sites More sharing options...
JohnJ Posted May 27, 2022 Share Posted May 27, 2022 12 minutes ago, jpc said: I think HucMucus got this one right. The weird texture is weathering. I have seen this sort of thing in my local baculite fields. I don't see weathered suturing or septa on the breaks.... The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
DPS Ammonite Posted May 27, 2022 Share Posted May 27, 2022 19 minutes ago, jpc said: I think HucMucus got this one right. The weird texture is weathering. I have seen this sort of thing in my local baculite fields. What were the baculites with similar weathering made of, calcite? My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
HuckMucus Posted May 27, 2022 Share Posted May 27, 2022 (edited) One of the photos looks like a baculite I found on the upper Powder in WY. Edited May 27, 2022 by HuckMucus Link to comment Share on other sites More sharing options...
abyssunder Posted May 27, 2022 Share Posted May 27, 2022 Is there any siphuncle visible in them? Transverse sections may help. " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
jpc Posted May 28, 2022 Share Posted May 28, 2022 I see two comments above that are based on my call of baculites that are all the same-ish... septa? siphuncle? This would be a weathered section of the living chamber, which has neither septa nor siphuncles. The shell is all gone, of course, so it is a calcitic infill of the last segment. These are common in any place where you get a lot of baculites. The weathering is uncommon, but tubular non-septated, non-siphuncled pieces of baculite are common. And I will admit, if the areas where I have found these weren't littered with septated and siphunculated pieces, it would be tougher to ID. Trust me on this one, I have seen thousands, and collected hundreds. I also have an ammonite from the Sahara that has similar weathering. It happens this way on limey rocks. Geologists have a word for it but I'll be boonswaggled if I can remember it. 5 Link to comment Share on other sites More sharing options...
DPS Ammonite Posted May 28, 2022 Share Posted May 28, 2022 (edited) My friend Stan knows: rillenstein. https://static1.squarespace.com/static/565bafcce4b0f0676600202a/t/5c76628008522964ddc6d038/1551262371644/B+-+February+2019.pdf Edited May 28, 2022 by DPS Ammonite 3 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
FranzBernhard Posted May 28, 2022 Share Posted May 28, 2022 3 hours ago, jpc said: if the areas where I have found these weren't littered with septated and siphunculated pieces, it would be tougher to ID. 3 hours ago, DPS Ammonite said: rillenstein. Wow! One of those example you are at a loss without context! Franz Bernhard Link to comment Share on other sites More sharing options...
marguy Posted May 28, 2022 Share Posted May 28, 2022 I believe these are very eroded orthocone remains from the Moroccan desert. Link to comment Share on other sites More sharing options...
Mart1980 Posted May 28, 2022 Author Share Posted May 28, 2022 When I do comparative research I indeed come across Baculites fossils. Thanks for the direction. I would never have come here myself. Link to comment Share on other sites More sharing options...
abyssunder Posted May 28, 2022 Share Posted May 28, 2022 7 hours ago, DPS Ammonite said: My friend Stan knows: rillenstein. https://static1.squarespace.com/static/565bafcce4b0f0676600202a/t/5c76628008522964ddc6d038/1551262371644/B+-+February+2019.pdf That it is! " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
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