rew Posted June 22, 2020 Author Share Posted June 22, 2020 Trilobite of the week #129 is Kingaspidoides sp., a Middle Cambrian member of the Ellipsocephalidae from the Jbel Wawrmast Formation of Jebel Ougnat, Morocco. 4 1 Link to comment Share on other sites More sharing options...
Ludwigia Posted June 22, 2020 Share Posted June 22, 2020 @rew I'd sure love to see a photo of your display case(s) someday. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
RJB Posted June 22, 2020 Share Posted June 22, 2020 I dont believe ive ever opened up this thread before? Some super nice fossils you have! I was expecting a bunch of moroccan trilo's prepped out with a railroad spike but I was very very very wrong! Im gunna hafta check out this thread more often. RB Link to comment Share on other sites More sharing options...
piranha Posted June 22, 2020 Share Posted June 22, 2020 10 hours ago, rew said: Trilobite of the week #129 is Kingaspidoides amouslekensis, a Middle Cambrian member of the Ellipsocephalidae from the Jbel Wawrmast Formation of Jebel Ougnat, Morocco. This is one is notoriously mislabeled across the internet. The correct name combination is: Kingaspis amouslekensis Geyer 1990 Kingaspis amouslekensis has a much smaller glabella. This species is still undescribed and should be labeled: Kingaspidoides sp. Geyer, G. 1990 Die Marokkanischen Ellipsocephalidae (Trilobita: Redlichiida). [The Moroccan Ellipsocephalidae (Trilobita: Redlichiida).] Institut für Paläontologie der Universität Würzburg, Beringeria, 3:1-363 PDF LINK 6 Link to comment Share on other sites More sharing options...
rew Posted June 23, 2020 Author Share Posted June 23, 2020 14 hours ago, piranha said: This is one is notoriously mislabeled across the internet. Well, now there is one less place on the internet where this trilobite is mislabeled. Link to comment Share on other sites More sharing options...
Sjfriend Posted June 25, 2020 Share Posted June 25, 2020 As a trilobite lover this thread and your collection is AWESOME! I can only dream about owning .001% of what you've shown us so far. Thank you (I think ) Link to comment Share on other sites More sharing options...
rew Posted June 27, 2020 Author Share Posted June 27, 2020 Trilobite of the week #130 is Conocoryphe sulzeri, a Middle Cambrian Ptychoparid trilobite from the Jince Formation of Jince, Czechoslovakia. This trilobite was blind. 4 1 Link to comment Share on other sites More sharing options...
rew Posted July 5, 2020 Author Share Posted July 5, 2020 Trilobite of the week #131 is aff. Bojoscutellum of Early Devonian age from the Timrhanrhart Formation of Jebel Ziguilma, Foum Zguid, Morocco. This is an undescribed scutellid that is provisionally named after a similar genus. I won't be surprised to see it put in a different genus when it gets a formal description. It has a robust occipital spine and large spines over the eyes, as well as some axial spines whose number and position varies with the specimen. The specimen is in retroflexed position (bent backwards). 5 Link to comment Share on other sites More sharing options...
rew Posted July 5, 2020 Author Share Posted July 5, 2020 This trilobite was obviously a direct ancestor of Triceratops. The lenses of the right eye are well preserved. There is some preservation of the lenses of the left eye, but that is much patchier. 3 Link to comment Share on other sites More sharing options...
rew Posted July 13, 2020 Author Share Posted July 13, 2020 Trilobite of the week #132 is Chancie ebdome of Middle Cambrian age from the Spence Shale in Box Elder County, Utah. This is in the Alokistocaridae, along with the similar Amecephalus genus. It is uncommon but is also found in the Burgess Shale. 3 Link to comment Share on other sites More sharing options...
Huntonia Posted July 13, 2020 Share Posted July 13, 2020 On 7/5/2020 at 1:09 AM, rew said: Trilobite of the week #131 is aff. Bojoscutellum of Early Devonian age from the Timrhanrhart Formation of Jebel Ziguilma, Foum Zguid, Morocco. This is an undescribed scutellid that is provisionally named after a similar genus. I won't be surprised to see it put in a different genus when it gets a formal description. It has a robust occipital spine and large spines over the eyes, as well as some axial spines whose number and position varies with the specimen. The specimen is in retroflexed position (bent backwards). You have an incredible variety of unique scuttelum! I agree with @Ludwigia, love to see your display. I'm curious if you have a system for display and if so do you prefer to organize the trilobites by location, related species, or something else? (Trying to come up with a system to organize my own trilos). Thanks Link to comment Share on other sites More sharing options...
Scylla Posted July 15, 2020 Share Posted July 15, 2020 On 6/24/2020 at 11:03 PM, Sjfriend said: As a trilobite lover this thread and your collection is AWESOME! I can only dream about owning .001% of what you've shown us so far. Thank you (I think ) .001% of 130 trilobites is 0.0013 of a trilobite. I can send you that if you need Link to comment Share on other sites More sharing options...
rew Posted July 16, 2020 Author Share Posted July 16, 2020 On 7/13/2020 at 2:34 AM, Huntonia said: You have an incredible variety of unique scuttelum! I agree with @Ludwigia, love to see your display. I'm curious if you have a system for display and if so do you prefer to organize the trilobites by location, related species, or something else? (Trying to come up with a system to organize my own trilos). Thanks Right now most of my trilobites are stored in tubs in my basement. I do plan to build some display cases but it's a long term project. 1 Link to comment Share on other sites More sharing options...
Sjfriend Posted July 16, 2020 Share Posted July 16, 2020 On 7/15/2020 at 12:12 PM, Scylla said: .001% of 130 trilobites is 0.0013 of a trilobite. I can send you that if you need That would be great! Wouldn't even take up too much space Though the label might be a little hard to see And, a good chance it would be a new species for me too lol 1 Link to comment Share on other sites More sharing options...
rew Posted July 19, 2020 Author Share Posted July 19, 2020 Trilobite of the week #133 is another "no prep" bug found in a concretion. It is Pennaia verneuili of Early Devonian age from the Belen Formation of Calamarca (La Paz) Bolivian Altiplano. As with all of my current Bolivian bugs, it is in the family Calmoniidae. 3 Link to comment Share on other sites More sharing options...
rew Posted July 27, 2020 Author Share Posted July 27, 2020 Trilobite of the week #134 is a double of Parahomalonotus calvus, an Early Devonian Homalonotid from the Timrhanrhart Formation of Foum Zguid, Morocco. Like most members of its family this is a large trilobite (the larger specimen is 18 cm long) and has lost most of its trilobation to streamline the body for a burrowing lifestyle. Both specimens are complete, although the head of the larger specimen is slightly disarticulated, bent to the right and tilted with the left side high and the right side low. The second photo here is angled to show the head of the larger trilobite a little better. The third phone is a close up of the smaller trilobite. 3 Link to comment Share on other sites More sharing options...
rew Posted July 27, 2020 Author Share Posted July 27, 2020 On 7/13/2020 at 2:22 AM, rew said: Trilobite of the week #132 is Chancie ebdome of Middle Cambrian age from the Spence Shale in Box Elder County, Utah. This is in the Alokistocaridae, along with the similar Amecephalus genus. It is uncommon but is also found in the Burgess Shale. Oops - a typo. That's supposed to be " Chancia ebdome", not " Chancie ebdome". I'm shocked that Piranha didn't catch that. 2 Link to comment Share on other sites More sharing options...
piranha Posted July 27, 2020 Share Posted July 27, 2020 56 minutes ago, rew said: Trilobite of the week #134 is a double of Parahomalonotus calvus, an Early Devonian Homalonotid from the Timrhanrhart Formation of Foum Zguid, Morocco. Like most members of its family this is a large trilobite (the larger specimen is 18 cm long) and has lost most of its trilobation to streamline the body for a burrowing lifestyle. Both specimens are complete, although the head of the larger specimen is slightly disarticulated, bent to the right and tilted with the left side high and the right side low. These are now reclassified: Wenndorfia calvus. Sandford 2005 assigned the Moroccan species Parahomalonotus planus planus to the new genus Wenndorfia. Because of a publishing overlap/oversight Chatterton et al. 2006 did not recognize Wenndorfia when they described the new species: Parahomalonotus calvus Sandford, A.C. 2005 Homalonotid Trilobites from the Silurian and Lower Devonian of South-Eastern Australia and New Zealand (Arthropoda: Trilobita: Homalonotidae). Memoirs of the National Museum Victoria, 62(1):1-66 PDF LINK Chatterton, B.D.E., Fortey, R.A., Brett, K.D., Gibb, S.L. McKellar, R.C. 2006 Trilobites from the Upper Lower to Middle Devonian Timrhanrhart Formation, Jbel Gara et Zguilma, Southern Morocco. Palaeontographica Canadiana, 25:1-177 PDF LINK 3 Link to comment Share on other sites More sharing options...
rew Posted July 27, 2020 Author Share Posted July 27, 2020 (edited) Here's a side view of the larger trilobite. You can see how far tilted up the left side of the head is, but mainly this is to show how domed the carapace is. Trimerus had a similar domed carapace but in most specimens, including my own, it is highly flattened as the carapace got crushed under the mud. Edited July 27, 2020 by Kane Typo Link to comment Share on other sites More sharing options...
rew Posted August 2, 2020 Author Share Posted August 2, 2020 Trilobite of the week #135 is Gondwanaspis mrirtensis of Late Devonian (Frasnian) age, from Mount Issoumour, Alnif, Morocco. This was one of the very last Odontopleurids, when this species went extinct at the end of the Frasnian they were all extinct. Tetrapods were crawling on land when this trilobite crawled in the ocean, and there were early forests of tree ferns in the swampy land areas. The world was beginning to get too modern for trilobites. 4 Link to comment Share on other sites More sharing options...
rew Posted August 9, 2020 Author Share Posted August 9, 2020 Trilobite of the week #136 is Olenoides vali, a member of the Dorypygidae within the order Corynexochida. This is of Middle Cambrian age and is from the Wheeler Formation of Millard County, Utah. Unlike that lonely Gondwanaspis, this trilobite lived during the heyday of trilobites, when they ruled the seas, with no jawed fish that could eat them. This has its occipital spine and axial spines preserved, but crushed flat on the back as is typical for these bugs. There is one pathologically short spine on the left side of the pygidium. There is no sign of a break, so it probably broke while the trilobite was alive and healed over, a common cause of short spines in trilobites. 3 Link to comment Share on other sites More sharing options...
piranha Posted August 9, 2020 Share Posted August 9, 2020 48 minutes ago, rew said: Trilobite of the week #136 is Olenoides valie, a member of the Dorypygidae within the order Corynexochida. This is of Middle Cambrian age and is from the Wheeler Formation of Millard County, Utah. Unlike that lonely Gondwanaspis, this trilobite lived during the heyday of trilobites, when they ruled the seas, with no jawed fish that could eat them. This has its occipital spine and axial spines preserved, but crushed flat on the back as is typical for these bugs. There is one pathologically short spine on the left side of the pygidium. There is no sign of a break, so it probably broke while the trilobite was alive and healed over, a common cause of short spines in trilobites. Very nice! Here is the publication that first described: Olenoides vali Robison, R.A., Babcock, L.E. 2011 Systematics, Paleobiology, and Taphonomy of some Exceptionally Preserved Trilobites from Cambrian Lagerstätten of Utah. The University of Kansas, Paleontological Contributions, 5:1-47 PDF LINK 3 Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted August 13, 2020 Share Posted August 13, 2020 Another super page of trilobites. Some of these Moroccan bugs I've not even seen here in Morocco! Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
rew Posted August 17, 2020 Author Share Posted August 17, 2020 Trilobite of the week #137 is Pseudosaukianda lata, of Early Cambrian age from the Issafen Formation from Issafen, Morocco. 2 Link to comment Share on other sites More sharing options...
Huntonia Posted August 17, 2020 Share Posted August 17, 2020 Love the axial spines! Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now