mediterranic Posted June 23, 2017 Share Posted June 23, 2017 This is a interesting piece with two specimens (a complete Kettneraspis aff. pigra and an unidentified one) fossilized facing ventrally with respect to one another. Two questions: 1) What period is this matrix?; 2) What species is the incomplete one? Dimensons of cranidium plus first thoraxic segments at the pictures: 1,3 x 1,9 cm Thanks in advance for your opinions. Miguel My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
izak_ Posted June 23, 2017 Share Posted June 23, 2017 The second one looks a lot like the odentopleura markhami we find at Forbes in Australia. I think it has a new name though i'm not sure. Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 23, 2017 Share Posted June 23, 2017 Cropped and enlarged: 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...
mediterranic Posted June 23, 2017 Author Share Posted June 23, 2017 @Fozzils The second one is a Kettneraspis aff. pigra @Fossildude19 Thanks, Tim. It will be easier like that, of course. Do you have any idea about it? Miguel My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
mediterranic Posted June 23, 2017 Author Share Posted June 23, 2017 I've tryed to enhance it here. Changing the screen luminosity it helps also. My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 23, 2017 Share Posted June 23, 2017 11 minutes ago, mediterranic said: @Fozzils The second one is a Kettneraspis aff. pigra @Fossildude19 Thanks, Tim. It will be easier like that, of course. Do you have any idea about it? Miguel Sorry Miguel, I know much more about photo editing than I do about trilobites. Regards, 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...
piranha Posted June 23, 2017 Share Posted June 23, 2017 Struveaspis sp. looks like a possibility. Additional specimens will help determine the exact position of the eyes. Link to comment Share on other sites More sharing options...
mediterranic Posted June 23, 2017 Author Share Posted June 23, 2017 Thanks for your opinion. @piranha the eyes don't show very well at that pic. Will take another and point them. My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
mediterranic Posted June 23, 2017 Author Share Posted June 23, 2017 @piranha do you think Struveaspis is possible at that location? What period is that rock? That stratum always seemed very different to me (not just by the color). Can it be Silurian? And that's the only specimen (just the cranidium) I've seen like that. My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
piranha Posted June 23, 2017 Share Posted June 23, 2017 6 minutes ago, mediterranic said: @piranha do you think Struveaspis is possible at that location? What period is that rock?... Yes it is possible, Kettneraspis pigra and Struveaspis each occur in the Eifelian of Morocco. Link to comment Share on other sites More sharing options...
mediterranic Posted June 23, 2017 Author Share Posted June 23, 2017 Ok. So, this is Kettneraspis pigra and not Kettneraspis aff. pigra, correct? My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
piranha Posted June 23, 2017 Share Posted June 23, 2017 19 minutes ago, mediterranic said: Ok. So, this is Kettneraspis pigra and not Kettneraspis aff. pigra, correct? Looks like a match! Link to comment Share on other sites More sharing options...
mediterranic Posted June 23, 2017 Author Share Posted June 23, 2017 @piranha My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
mediterranic Posted June 23, 2017 Author Share Posted June 23, 2017 @piranha More on the way My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
piranha Posted June 23, 2017 Share Posted June 23, 2017 A word of caution on the phacopid. Struveaspis is possible but there are other phacopids with similar morphology. Unless you find additional specimens showing more details of the eyes, it is not possible to make any confident ID. Link to comment Share on other sites More sharing options...
mediterranic Posted June 23, 2017 Author Share Posted June 23, 2017 There they are The eyes are deformed. I don't see any ocella. My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
mediterranic Posted June 23, 2017 Author Share Posted June 23, 2017 16 minutes ago, piranha said: A word of caution on the phacopid. Struveaspis is possible but there are other phacopids with similar morphology. Unless you find additional specimens showing more details of the eyes, it is not possible to make any confident ID. I see. Maybe there is interesting future research to do on this topic. Will keep this specimen in my collection by now, then. Thanks for your time. Miguel My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
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