piranha Posted July 9, 2017 Share Posted July 9, 2017 You are wearing me out! LOL Link to comment Share on other sites More sharing options...
mediterranic Posted July 9, 2017 Author Share Posted July 9, 2017 2 minutes ago, piranha said: You are wearing me out Ahah. Sorry... And I am already identifying by myself about 50% of the specimens I'm digging now from the boxes... My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
piranha Posted July 10, 2017 Share Posted July 10, 2017 illaenid indet. Ellipsocephalus sp. cf. Kingaspis glabrata Link to comment Share on other sites More sharing options...
mediterranic Posted July 11, 2017 Author Share Posted July 11, 2017 Well, @piranha, returning to those ones: don't you find those cranidia more similar to Termierella latifrons than to Brevitermierella brevifrons? 1-2: Termierella 19-20: Brevitermierella Geyer, 1990 Regards, Miguel My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
mediterranic Posted July 11, 2017 Author Share Posted July 11, 2017 and two more, if it helps. Thanks in advance, Miguel My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
piranha Posted July 11, 2017 Share Posted July 11, 2017 11 hours ago, mediterranic said: ...don't you find those cranidia more similar to Termierella latifrons than to Brevitermierella brevifrons? The figures from Geyer show the palpebro-ocular ridges are too wide and the preglabellar field for Termierella is wider than Brevitermierella. Protolenus densigranulatus Link to comment Share on other sites More sharing options...
mediterranic Posted July 28, 2017 Author Share Posted July 28, 2017 Another big one from Ougnate, this time. What can it be? Thanks in advance. Miguel My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
piranha Posted July 28, 2017 Share Posted July 28, 2017 It looks like Hamatolenus sp. Here is a similar specimen with long genal spines. Link to comment Share on other sites More sharing options...
piranha Posted July 28, 2017 Share Posted July 28, 2017 One more example: Hamatolenus marocanus Link to comment Share on other sites More sharing options...
mediterranic Posted July 28, 2017 Author Share Posted July 28, 2017 Yes, indeed Hamatolenus sp. seems a good match. Thanks a lot, @piranha My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
mediterranic Posted July 30, 2017 Author Share Posted July 30, 2017 This fossil, in the same plate of one Ellipsocephaloidea ssp. from Ougnate, really intrigues me. Any ideas of what can it be? For scale, the trilobite has 2,8 cm. Thanks in advance, Miguel My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
mediterranic Posted July 30, 2017 Author Share Posted July 30, 2017 This is not one of my specimens. It is one that I found online and it's confusing me. Am I wrong or this is not one Hamatolenus but instead, maybe a Brevitermierella? @piranha My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
mediterranic Posted July 30, 2017 Author Share Posted July 30, 2017 or, better, maybe a Protolenus ? My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
mediterranic Posted July 30, 2017 Author Share Posted July 30, 2017 Here is the reason of my question: the "specimen found online" (Hamatolenus ???) vs.Hamatolenus vs. Protolenus vs. Brevitermierella. Cheers. Miguel putative Hamatolenus Protolenus Brevitermierella Hamatolenus My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
mediterranic Posted July 31, 2017 Author Share Posted July 31, 2017 Maybe a naive question for the geology experts here: Is it know to how many million years it corresponds a vertical distance in a determined strata? For instance, 1 cm of Cambrian strata may separate how much geo-time? (Cambrian or other). Of course I understand that the answer may be possible just to well study places. But generally speaking...? Miguel My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
piranha Posted July 31, 2017 Share Posted July 31, 2017 Hamatolenus marocanus Link to comment Share on other sites More sharing options...
ynot Posted July 31, 2017 Share Posted July 31, 2017 26 minutes ago, mediterranic said: Maybe a naive question for the geology experts here: Is it know to how many million years it corresponds a vertical distance in a determined strata? For instance, 1 cm of Cambrian strata may separate how much geo-time? ( It varies from place to place and through time. It is dependent on amount of sedimentation and amount of compaction of the sediments. Heavy rains and soft / unstable soils can cause a large buildup over a short period of time - and - hard soils and lack of rain can reduce the sedimentation buildup. 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...
mediterranic Posted July 31, 2017 Author Share Posted July 31, 2017 @piranha How many segments do this specimen have? 5-6? Don't the illaenids have 8-10 segments? (http://trilobites.info/ordcorynexochida.htm) My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
doushantuo Posted July 31, 2017 Share Posted July 31, 2017 Straubl-2012-JG_Resrface012).pdf Link to comment Share on other sites More sharing options...
doushantuo Posted July 31, 2017 Share Posted July 31, 2017 Wilkinson1999_0_0 (1).pdf Link to comment Share on other sites More sharing options...
mediterranic Posted July 31, 2017 Author Share Posted July 31, 2017 5 minutes ago, doushantuo said: Straubl-2012-JG_Resrface012).pdf Already reading it. Thanks a lot @doushantuo My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
doushantuo Posted July 31, 2017 Share Posted July 31, 2017 paola_and_swenson,_1998.pdf Link to comment Share on other sites More sharing options...
doushantuo Posted July 31, 2017 Share Posted July 31, 2017 Millertime!sorry,but that one was so obvious millertimestratigraphyvol8_part1_pp113-131.pdf Link to comment Share on other sites More sharing options...
mediterranic Posted July 31, 2017 Author Share Posted July 31, 2017 Well, I didn't give up from this one. After searching all Illaenina genera and seeing that a Cambrian Illaenid with 5 or 6 segments is not described, I asked for Sam G. opinion too. New observations and new pics with other light angles made Sam think about the hypothesis of two partial Ellipsocephalids overlapping. I am also confident now that the "pygidium" is another's trilobite cephalon cutted by a preparer to resemble thorax's continuity. And that the fine counterpart was just luck and was confusing the reasoning. So, these are two partial Ellipsocephalids that seems just one. Another question in the meantime: in the same matrix, there are these strange structures. Like filaments or some vegetal parts. Do you think these are fossils? The two Ellipsocephalids that seem an Illaninae: My Academia.edu profile - My About Me page Link to comment Share on other sites More sharing options...
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