Malone Posted April 9, 2018 Share Posted April 9, 2018 Another piece from the rock canyon anticline. Both are approximately inch. I find many of these and didn't know if they are worth further investigation or even if they are identifiable, but I have seen amazing diagnosis and seemingly valueless things have scientific value. After seeing the amount of effort and the amount of scientific information continually being amassed I thought it would be worth asking. Link to comment Share on other sites More sharing options...
ynot Posted April 9, 2018 Share Posted April 9, 2018 Look like bits of shell. The first looks gastropod and the second looks bivalve. Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Malone Posted April 9, 2018 Author Share Posted April 9, 2018 6 minutes ago, ynot said: Look like bits of shell. The first looks gastropod and the second looks bivalve. Thank you! Wasn't sure. I read in a USGS report that there were rare shell fragments here, so I thought it was worth checking. I also don't have even the basic knowledge to know what to look for, other than things that don't look like a rock. Link to comment Share on other sites More sharing options...
Wrangellian Posted April 9, 2018 Share Posted April 9, 2018 The first one could be a bivalve or bivalves, too. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted April 9, 2018 Share Posted April 9, 2018 Yes, bivalves, i think! Always worth picking up interesting looking objects. You never know....... Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Ludwigia Posted April 9, 2018 Share Posted April 9, 2018 Just to make things more complicated, the first one could also be brachiopod. Hard to tell. What's the stratigraphy? I don't know what canyon you're talking about. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Malone Posted April 9, 2018 Author Share Posted April 9, 2018 1 hour ago, Tidgy's Dad said: Yes, bivalves, i think! Always worth picking up interesting looking objects. You never know....... Yeah that's especially true for me. The USGS said there were rare fragments but they didn't specify what ones, so would you have any ideas where to find that out? Also they mentioned Gastropoda, but didn't specify any of the names. Link to comment Share on other sites More sharing options...
Malone Posted April 9, 2018 Author Share Posted April 9, 2018 1 minute ago, Ludwigia said: Just to make things more complicated, the first one could also be brachiopod. Hard to tell. What's the stratigraphy? I don't know what canyon you're talking about. It's a debris pile from the rock canyon anticline. I have no more specifics than that. Link to comment Share on other sites More sharing options...
Malone Posted April 9, 2018 Author Share Posted April 9, 2018 It's the world stratotype boundary used by geologist for the Cretaceous layer. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted April 9, 2018 Share Posted April 9, 2018 2 hours ago, Malone said: Yeah that's especially true for me. The USGS said there were rare fragments but they didn't specify what ones, so would you have any ideas where to find that out? Also they mentioned Gastropoda, but didn't specify any of the names. Sorry, no idea. Fruitbat's library is always worth a look. Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
jpc Posted April 9, 2018 Share Posted April 9, 2018 3 hours ago, Malone said: It's the world stratotype boundary used by geologist for the Cretaceous layer. world stratotype boundary? I had never heard of this so I googled it. Here is what I found on Wikipedia... which never lies. It seems it might be the WSB for the Turonian which is a subset of the Cretaceous. https://en.wikipedia.org/wiki/List_of_Global_Boundary_Stratotype_Sections_and_Points#Cretaceous Seems that the Rock canyon Anticline is outside of Pueblo, CO and it is has a good exposure and biostratigraphic record in the Greenhorn Formation which is Turonian in age and maybe spans the Cenomanian/Turomian boundary. https://www.geo.umass.edu/faculty/leckie/Leckie 1985.pdf. Link to comment Share on other sites More sharing options...
doushantuo Posted April 9, 2018 Share Posted April 9, 2018 can recommend this,BTW: turo(about 4,5 MB) outtake: Link to comment Share on other sites More sharing options...
Malone Posted April 9, 2018 Author Share Posted April 9, 2018 52 minutes ago, doushantuo said: can recommend this,BTW: turo(about 4,5 MB) outtake: Once again your capacity to come up with relevant research is amazing! Thank you very much! Link to comment Share on other sites More sharing options...
Heteromorph Posted April 9, 2018 Share Posted April 9, 2018 To me, the first picture shows two oyster valves (possibly inoceramids) with part of their shells worn/knocked off and the second definitely shows an inoceramid shell. Here is is another article about the canyon: https://www.kqed.org/science/10292 Link to comment Share on other sites More sharing options...
Malone Posted April 9, 2018 Author Share Posted April 9, 2018 Just now, Heteromorph said: To me, the first picture shows two oysters (possibly inoceramids) with part of their shells worn/knocked off and the second definitely shows an inoceramid shell. Here is is another article about the canyon: https://www.kqed.org/science/10292 Thank you! I really appreciate the response! Link to comment Share on other sites More sharing options...
Malone Posted April 9, 2018 Author Share Posted April 9, 2018 2 hours ago, Tidgy's Dad said: Sorry, no idea. Fruitbat's library is always worth a look. Thank you! I thought fruitbat was a title here on the forum until you mentioned it and then searched it on the internet. Link to comment Share on other sites More sharing options...
abyssunder Posted April 9, 2018 Share Posted April 9, 2018 The first specimen hides two valves of a bivalve, possibly from the same individual. The second specimen looks to be a ferruginous bivalve shell fragment. So, no UFO. " 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...
Malone Posted April 10, 2018 Author Share Posted April 10, 2018 2 hours ago, abyssunder said: The first specimen hides two valves of a bivalve, possibly from the same individual. The second specimen looks to be a ferruginous bivalve shell fragment. So, no UFO. Thanks for responding! It is appreciated! Link to comment Share on other sites More sharing options...
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