AJJ Posted June 25, 2022 Share Posted June 25, 2022 Link to comment Share on other sites More sharing options...
AJJ Posted June 25, 2022 Author Share Posted June 25, 2022 (edited) What about this? Is it an egg I know the answer let's see if you do! Edited June 25, 2022 by AJJ Add photos Link to comment Share on other sites More sharing options...
Coco Posted June 25, 2022 Share Posted June 25, 2022 Hi, Photos in HEIC format are not supported by the forum. They have to be transformed into JPG. Coco 1 ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
Ludwigia Posted June 25, 2022 Share Posted June 25, 2022 55 minutes ago, AJJ said: I know the answer let's see if you do! So what is it then if you already know? Please support your claim with scientific proof. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
FranzBernhard Posted June 25, 2022 Share Posted June 25, 2022 Lets take it as some kind of contest! Its a quartzitic river rock that suffered some spalling when going through a fire . Franz Bernhard 1 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 25, 2022 Share Posted June 25, 2022 Not an egg. Could be a river rock as suggested by Franz, or a concretion/nodule. Please look through these topics: 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...
doushantuo Posted June 25, 2022 Share Posted June 25, 2022 I was on the verge of never returning to this thread, the suspense was killing me. As I (and many, many others) have said before: Not everything (sub) spherical, (sub) ovoidal, ooidal is an egg, that is: A biomineralized construct designed to immunologically shield an embryo while simultaneously letting it respire, an incubating structure resulting from a certain reproductive ecology and ethology, mostly produced in numbers greater than one, and probably, given the high spectral reflectance of the shell, deposited in a secure, or even cryptic, environment, 2 Link to comment Share on other sites More sharing options...
digit Posted June 25, 2022 Share Posted June 25, 2022 4 hours ago, AJJ said: What about this? Is it an egg I know the answer let's see if you do! Agreed that this is a river rock worn smooth and round by erosion. The outer surface has been eroded away by a spalling process called an exfoliation joint which commonly cause egg shell like flakes to cleave off the surface. This is a well known process to geologists and is visible to anybody who has been around rock formations. https://en.wikipedia.org/wiki/Exfoliation_joint You say that you know the correct answer and are hoping that we too know the truth about this object. If you too know about this exfoliation process and how it creates thin sheets that mimic egg shells then thank you for posting an interesting pseudo-fossil often misinterpreted as fossilized eggs. If, however, you were assuming this did indeed represent some sort of egg then I hope this new information was enlightening. Cheers. -Ken 3 Link to comment Share on other sites More sharing options...
doushantuo Posted June 25, 2022 Share Posted June 25, 2022 Digit, doesn't diabase weather spheroidically? edit "tend to weather" Link to comment Share on other sites More sharing options...
digit Posted June 25, 2022 Share Posted June 25, 2022 It does but diabase is an igneous rock similar to basalt and the rock in question looks to have a much higher quartz content. https://geology.com/rocks/diabase.shtml https://epod.usra.edu/blog/2014/05/spheroidal-weathering-in-salt-river-canyon-arizona.html https://www.researchgate.net/figure/a-Spheoridal-weathering-intensively-occurred-in-diabase-It-occurs-in-a-jointed-rock_fig5_285593222 Regardless of the actual composition of the rock in question, one thing is certain is that this is in no was a fossil and only vaguely resembles an egg. Cheers. -Ken 2 Link to comment Share on other sites More sharing options...
RJB Posted June 25, 2022 Share Posted June 25, 2022 100% not an egg RB 1 Link to comment Share on other sites More sharing options...
Phos_01 Posted June 25, 2022 Share Posted June 25, 2022 Hi, I don't see any eggshell surface. It looks like a rock with an egg shape. But others have already pointed this out also. Would have been nice though. Link to comment Share on other sites More sharing options...
doushantuo Posted June 25, 2022 Share Posted June 25, 2022 1 2 Link to comment Share on other sites More sharing options...
AJJ Posted June 25, 2022 Author Share Posted June 25, 2022 9 hours ago, Ludwigia said: So what is it then if you already know? Please support your claim with scientific proof. Ment to say I don't know do you? Sorry MT mistake Link to comment Share on other sites More sharing options...
AJJ Posted June 25, 2022 Author Share Posted June 25, 2022 5 hours ago, doushantuo said: I was on the verge of never returning to this thread, the suspense was killing me. As I (and many, many others) have said before: Not everything (sub) spherical, (sub) ovoidal, ooidal is an egg, that is: A biomineralized construct designed to immunologically shield an embryo while simultaneously letting it respire, an incubating structure resulting from a certain reproductive ecology and ethology, mostly produced in numbers greater than one, and probably, given the high spectral reflectance of the shell, deposited in a secure, or even cryptic, environment, The shell is of equal depth all the way around as I can see Link to comment Share on other sites More sharing options...
AJJ Posted June 25, 2022 Author Share Posted June 25, 2022 9 hours ago, Ludwigia said: So what is it then if you already know? Please support your claim with scientific proof. I ment to say I don't know sorry my mistake Link to comment Share on other sites More sharing options...
Ludwigia Posted June 25, 2022 Share Posted June 25, 2022 1 hour ago, AJJ said: Ment to say I don't know do you? Sorry MT mistake It's not an egg. 2 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
AJJ Posted June 25, 2022 Author Share Posted June 25, 2022 Well I'm gonna go ahead and assume it is, because I've not seen any examples put forth that remotely resembles what I have. I live in San Diego I'm sure I can have it tested somewhere around here Link to comment Share on other sites More sharing options...
AJJ Posted June 25, 2022 Author Share Posted June 25, 2022 7 hours ago, doushantuo said: This was found by cliffs next to a beach and looks nothing like that Link to comment Share on other sites More sharing options...
AJJ Posted June 25, 2022 Author Share Posted June 25, 2022 12 hours ago, FranzBernhard said: Lets take it as some kind of contest! Its a quartzitic river rock that suffered some spalling when going through a fire . Franz Bernhard It was found on cliffs next to the beach don't think your theory would hold up. Come on people I heard you guys were the smartest on this kind of stuff around . Throw me a freakin bone here (pun) lol Link to comment Share on other sites More sharing options...
Kane Posted June 25, 2022 Share Posted June 25, 2022 24 minutes ago, AJJ said: Well I'm gonna go ahead and assume it is, because I've not seen any examples put forth that remotely resembles what I have. I live in San Diego I'm sure I can have it tested somewhere around here Unfortunately, that is not how science works. Proceeding by assertions and assumptions is not the way. As a test, itemize all the reasons why this is not an egg. This is known as falsification, and it is very helpful in the sciences as that is embedded in the empirical method. What is the geology of your area? What are the formations exposed in the cliffs where this was found? That will be a good starting point. From there, you can determine the age of the strata, which would be a helpful forensic detail to eliminate a wide range of possibilities. For example, I have found similar rocks such as yours in Devonian deposits, and we know that antedates fossilized eggs by a long chalk. You will likely find the USGS maps of some utility in this task to determine age of the strata. What else was found in the sediments? Our members are happy to assist if you can provide some further detail, but it may be a fool's errand to insist this is a fossil egg at the exclusion of all other possibilities. 1 1 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Troodon Posted June 25, 2022 Share Posted June 25, 2022 Just because something is egg shaped it does not make it an egg. Must be a Whopper egg because I said so.! 2 2 Link to comment Share on other sites More sharing options...
AJJ Posted June 25, 2022 Author Share Posted June 25, 2022 17 minutes ago, Kane said: Unfortunately, that is not how science works. Proceeding by assertions and assumptions is not the way. As a test, itemize all the reasons why this is not an egg. This is known as falsification, and it is very helpful in the sciences as that is embedded in the empirical method. What is the geology of your area? What are the formations exposed in the cliffs where this was found? That will be a good starting point. From there, you can determine the age of the strata, which would be a helpful forensic detail to eliminate a wide range of possibilities. For example, I have found similar rocks such as yours in Devonian deposits, and we know that antedates fossilized eggs by a long chalk. You will likely find the USGS maps of some utility in this task to determine age of the strata. What else was found in the sediments? Our members are happy to assist if you can provide some further detail, but it may be a fool's errand to insist this is a fossil egg at the exclusion of all other possibilities. Very informative I greatly appreciate it I didn't look for anything else in the giant crack in the Cliffside I saw this poking out of the dirt a little so I dug it out and took it home I like to collect rocks as memory stones (as my wife and I like to call them) but I've found quite the extensive array of rocks I do have a few that I have questions about maybe you guys would know Link to comment Share on other sites More sharing options...
AJJ Posted June 25, 2022 Author Share Posted June 25, 2022 7 minutes ago, Troodon said: Just because something is egg shaped it does not make it an egg. Must be a Whopper egg because I said so.! Take a chip of that rock off and it be perfectly concave and exact depth all the way around like a shell let's see your picture of that. Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 25, 2022 Share Posted June 25, 2022 More "Not Eggs." Have any egg fossils been discovered in the area before? Your item appears to be flat on one side, and the thickness of the "shell" does not appear to be the same in all places. 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...
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