piranha Posted February 13, 2011 Share Posted February 13, 2011 Awesome Peter ... Thanks for posting that MONSTER BUG !! Link to comment Share on other sites More sharing options...
pleecan Posted February 13, 2011 Share Posted February 13, 2011 Awesome Peter ... Thanks for posting that MONSTER BUG !! Thanks Scott... funny how certain events shaped our lives.... if I had never spotted that fossil... the course of my history would have dramatically and permanently been altered and I would not be present here on this fossil forum and all the hobbies pertaining to this wonderful hobby would not exist... that is the magnitude of the find and its ramifications.... <as I sit here at awe> Link to comment Share on other sites More sharing options...
piranha Posted February 13, 2011 Share Posted February 13, 2011 This is a superb odontopleurid from Morocco. It's a Leonaspis sp. although I've seen a few remarks assigning it possibly as Kettneraspis? Although diminutive in size this little bug has many exciting morphological features. The fringing of the cephalic margin and the metafixigenal and median genal spines are articulated, intact and preserved. Also worth noting is the attachment points of spines on the axis and along the entire thoracic margin. Leonaspis sp. 1.5" (4cm) Devonian - Laatchana, Morocco Link to comment Share on other sites More sharing options...
pleecan Posted February 13, 2011 Share Posted February 13, 2011 This is a superb odontopleurid from Morocco. It's a Leonaspis sp. although I've seen a few remarks assigning it possibly as Kettneraspis? Although diminutive in size this little bug has many exciting morphological features. The fringing of the cephalic margin and the metafixigenal and median genal spines are articulated, intact and preserved. Also worth noting is the attachment points of spines on the axis and along the entire thoracic margin. Leonaspis sp. 1.5" (4cm) Devonian - Laatchana, Morocco Scott: It is another museum grade trilobite from your fabulous collection! PL Link to comment Share on other sites More sharing options...
xonenine Posted February 13, 2011 Share Posted February 13, 2011 (edited) i saved that one as a trilo to carve Scott, very cool and detailed for model!, in fact alot of these are good models, hope no one objects if i save some to carve more. Edited February 13, 2011 by xonenine "Your serpent of Egypt is bred now of your mud by the operation of your sun; so is your crocodile." Lepidus Link to comment Share on other sites More sharing options...
Trilobitologist Posted February 14, 2011 Share Posted February 14, 2011 I think it is a Kettneraspis, since it has a "Kettneraspis type" pygidium, with 2 spines between the major spines. Leos generally have 2. You give the locality as Lachana. Do you know the horizon? Is it from the Dicranurus couche? There is a similar species (you've seen it before) with a very long occipital spine from a little further up I think (in the "couche rouge") Both species are likely Pragian in age. There are so many different Leos/Kettners from Morocco. One of these days someone will figure them out..... Link to comment Share on other sites More sharing options...
Trilobitologist Posted February 14, 2011 Share Posted February 14, 2011 Sorry - Leos generally have 2 pairs between the major pygidial spines. I read my post and didn't mean to be ambiguous..... Link to comment Share on other sites More sharing options...
Trilobitologist Posted February 14, 2011 Share Posted February 14, 2011 Here's one of the Leonaspis types. 2 spines between the major pygidial spines. It took me a while to prep this baby - lots of little spines running down the thorax. Link to comment Share on other sites More sharing options...
piranha Posted February 14, 2011 Share Posted February 14, 2011 On 2/13/2011 at 6:18 PM, Trilobitologist said: Here's one of the Leonaspis types. 2 spines between the major pygidial spines. It took me a while to prep this baby - lots of little spines running down the thorax. Superb prep Kevin ... as good as it gets! Oh yeah .... nice trilobite too! Link to comment Share on other sites More sharing options...
palaeopix Posted February 14, 2011 Share Posted February 14, 2011 (edited) Nice Kettneraspis sp. and Leonaspis sp. Scott and Kevin!!!!! So what does that make this then? I'm thinking Kettneraspis sp. Mines not nearly as nice as your specimens but I liked it! The prep is a bit crude! I'm having such a great time on this thread, so much new info! Dan Edited February 14, 2011 by palaeopix Link to comment Share on other sites More sharing options...
Trilobitologist Posted February 14, 2011 Share Posted February 14, 2011 Thanks Dan! I would have to say Kettneraspis. Typical Moroccan prep, but it's not to bad..... Unfortunately almost no work has been done on these odontopleurids. So I can't recommend any species names. Link to comment Share on other sites More sharing options...
piranha Posted February 14, 2011 Share Posted February 14, 2011 Kettneraspis from North America. CGI antennae, appendages, spines: LINK Kettneraspis williamsi .75" (2cm) Lower Devonian - Haragan Fm Coal County, Oklahoma Link to comment Share on other sites More sharing options...
Trilobitologist Posted February 14, 2011 Share Posted February 14, 2011 Since we're still on the Kettneraspis, thought I'd post the one I just finished lately. It's a killer 99%, no restoration and took me 4 hours prep time. It's for sale, so PM me if you're interested. http://www.thefossilforum.com/index.php/gallery/album/4777/1060-usa-trilobites/ Link to comment Share on other sites More sharing options...
piranha Posted February 15, 2011 Share Posted February 15, 2011 Here's another odontopleurid, Selenopeltis sp. from Morocco. Kevin, I have no idea which couche this bug originated from! I'm uncomfortable calling it S.buchi and have no confidence of its exact stratigraphic relationship. The clues however are the distinct morphology closer in affinity to S.inermis and the odd dark gray lithology atypical of more common Moroccan types. Would you say that S. vultuosa is similar to S.inermis and how close are either of these selenopeltids to my trilobites? RE: Bruton, David L. (2008) A systematic revision of Selenopeltis (Trilobita: Odontopleuridae) with description of new material from the Ordovician Anti Atlas region, Morocco. Paläontologische Zeitschrift 82(1):1-16 One bug is preserved oddly across/along the bedding plane. Selenopeltis sp. (2) 3" Ordovician - Morocco Link to comment Share on other sites More sharing options...
Frank Menser Posted February 15, 2011 Share Posted February 15, 2011 While we are still there. Here is a 1.5" Cerarus from the Cobourg Formation, Ontario. Anyone know what sps? Also. This 3" TB came from South Africa. Again, anyone know what this is? Be true to the reality you create. Link to comment Share on other sites More sharing options...
piranha Posted February 15, 2011 Share Posted February 15, 2011 I'll take a couple guesses at your bugs Frank. Difficult to be sure because they are weathered. The cheirurid looks like Ceraurus globulobatus. Are you positive that was collected at Cobourg? The trilobite from Morocco appears to be a dalmanitid. Dalmanitina or Eudolatites based on the small pygidium? Link to comment Share on other sites More sharing options...
Frank Menser Posted February 16, 2011 Share Posted February 16, 2011 Thanks Piranha The Cerarus is from a very reputable source; Definitely from Cobourg. They sold it an undentified Cerarus sp. Despite the photo it is not weathered. Just a thin calcite preservation. As for the other, it is not from Morocco. This is from South Africa. Be true to the reality you create. Link to comment Share on other sites More sharing options...
piranha Posted February 16, 2011 Share Posted February 16, 2011 Thanks Piranha The Cerarus is from a very reputable source; Definitely from Cobourg. They sold it an undentified Cerarus sp. Despite the photo it is not weathered. Just a thin calcite preservation. As for the other, it is not from Morocco. This is from South Africa. I'll let Kevin weigh in on the Ceraurus. It looks similar to C.globulobatus but I don't see it on the list of cheirurids occurring at Cobourg. I'm still confident that the second trilobite is a dalmanitid. The one feature counter-indicated is the apparent opisthoparian suture. A dalminitiform suture should be proparian (not intersecting the genal angle). Because of the other more prominent characters present and the fact that this trilobite is indeed weathered, leads me to believe that the right fixigena is not entirely present. As for the attribution of South Africa I'm clueless... Link to comment Share on other sites More sharing options...
Caleb Posted February 16, 2011 Share Posted February 16, 2011 (edited) I'll let Kevin weigh in on the Ceraurus. It looks similar to C.globulobatus but I don't see it on the list of cheirurids occurring at Cobourg. I'm still confident that the second trilobite is a dalmanitid. The one feature counter-indicated is the apparent opisthoparian suture. A dalminitiform suture should be proparian (not intersecting the genal angle). Because of the other more prominent characters present and the fact that this trilobite is indeed weathered, leads me to believe that the right fixigena is not entirely present. As for the attribution of South Africa I'm clueless... I agree that it's a C. globulobatus. Here is a photo of one from the Cobourg Formation that sold a while back from Extinctions, Inc. Link Edited February 16, 2011 by Caleb Caleb Midwestpaleo.com Link to comment Share on other sites More sharing options...
piranha Posted February 16, 2011 Share Posted February 16, 2011 On 2/15/2011 at 4:54 PM, Caleb said: I agree that it's a C. globulobatus. Here is a photo of one from the Cobourg Formation that sold a while back from Extinctions, Inc. Link Thanks Caleb, I guess it would help if I wasn't looking at the list of Bobcaygeon Fm bugs! Link to comment Share on other sites More sharing options...
pleecan Posted February 16, 2011 Share Posted February 16, 2011 (edited) This is one of my first Ceraurus found .... same Ordovician quarry as the first 9" Isotelus.... Ogden Pt Quarry at Colborne ON (now closed to collectors)... before I got any proper rock hunting equipment.. I would walk by dozens of Ceraurus on massive limestone block , unable to exteract.... I remember the rock was so hard that hammer and chisel would just bounced off on impact... I had no camera back then .... Bill H. and myself were the main people collecting in this world class quarry... at that time I only lived 10min drive to this quarry... it was at the bottom of my street ... I hunted every weekend like a fiend, not knowing that the quarry will be closed forever toward the end of summer.... Irony is that I discovered the wonders of fossil hunting in this particular quarry only to have the door open briefly (a moment in time) then suddenly closed forever. Edited February 16, 2011 by pleecan Link to comment Share on other sites More sharing options...
Frank Menser Posted February 16, 2011 Share Posted February 16, 2011 Thanks Caleb, I guess it would help if I wasn't looking at the list of Bobcaygeon Fm bugs! Thank you both. It's been sitting on my shelf for about 6 years with just the sps tag. The South Africa bug was an interesting situation. It came from a collector who actually picked it up in that country. When I researched it, I learned that a former president of South Africa had written a book on their native Trilos, but I could not find a copy. Be true to the reality you create. Link to comment Share on other sites More sharing options...
piranha Posted February 16, 2011 Share Posted February 16, 2011 Good Morning Frank I found this photo you had posted previously. The suture does appear intact so I'm having difficulty sorting out the genus of this trilobite. In that post you also mention its 85mm length which should be considered as well. The features of the glabella and the way it tapers back make me think dalamanitid. If that suture is is in fact opisthoparian then your trilobite requires more evaluation. I'm presently puzzling over this weird bug from South Africa. Link to comment Share on other sites More sharing options...
Frank Menser Posted February 16, 2011 Share Posted February 16, 2011 Good Morning Frank I found this photo you had posted previously. The suture does appear intact so I'm having difficulty sorting out the genus of this trilobite. In that post you also mention its 85mm length which should be considered as well. The features of the glabella and the way it tapers back make me think dalamanitid. If that suture is is in fact opisthoparian then your trilobite requires more evaluation. I'm presently puzzling over this weird bug from South Africa. The older picture is more exact as to color. It is a softer limestone, reminds me of what you normally find NY Bumastis. Interestingly, there is a second bug slightly exposed under the first (beneath the big crack. There is no sign of the free cheeks which of course would have given a clearer picture of what this is. I have never seen another TB offered from this locality. Be true to the reality you create. Link to comment Share on other sites More sharing options...
ems Posted February 17, 2011 Share Posted February 17, 2011 (edited) I would rather speculate on a dalmanitid. Maybe Bokkeveld-group (Devonian). Edited February 17, 2011 by ems Link to comment Share on other sites More sharing options...
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