MB 85 Report post Posted January 1, 2017 On 29/12/2016 at 9:39 PM, Doctor Mud said: Being my first trip it took me a while to get my eye in for the right concretions. The most interesting find was this: My my guess is that this is a pincer from Metacarcinus novaezelaniae (Piecrust crab). Surely you are right, nice find Share this post Link to post Share on other sites
Doctor Mud 465 Report post Posted January 1, 2017 On 30 December 2016 at 1:49 PM, fossisle said: WoW awesome claw, I hope the rest is there. Did you find many more concretions? I hope so too. I decided to save this one for the scribe and not crack it. It it was my first time there. I found concretions, but no crabs. Plenty of shells and bits of unidentifiable marine mammal bone, but for some reason I missed out on the crab front. I think I was cracking the right concretions? Share this post Link to post Share on other sites
Doctor Mud 465 Report post Posted January 1, 2017 1 hour ago, MB said: Surely you are right, nice find Thanks MB. Im hopeful the rest of the crab is in there. Share this post Link to post Share on other sites
fossisle 44 Report post Posted January 1, 2017 5 hours ago, Doctor Mud said: I hope so too. I decided to save this one for the scribe and not crack it. It it was my first time there. I found concretions, but no crabs. Plenty of shells and bits of unidentifiable marine mammal bone, but for some reason I missed out on the crab front. I think I was cracking the right concretions? Always fun to go somewhere new. You were probably finding what other people would leave hoping for a crab, but some of that can be just as interesting!! Share this post Link to post Share on other sites
Doctor Mud 465 Report post Posted January 1, 2017 6 hours ago, fossisle said: Always fun to go somewhere new. You were probably finding what other people would leave hoping for a crab, but some of that can be just as interesting!! I agree. Often great stuff is missed because people at famous crabbing sites are looking for crabs. They have their search image honed in for these. The local museum said they had found some of their best vertebrate remains near the car park. Share this post Link to post Share on other sites
Dave (POM) Allen 78 Report post Posted January 4, 2017 On 12/30/2016 at 9:39 AM, Doctor Mud said: Being my first trip it took me a while to get my eye in for the right concretions. The most interesting find was this: My my guess is that this is a pincer from Metacarcinus novaezelaniae (Piecrust crab). i am afraid i think what you have is better than a Metacarcinus novaezelaniae what i can see is the head plate of a metanephrops motunauesis Share this post Link to post Share on other sites
David in Japan 116 Report post Posted January 4, 2017 Small hermit crabs in an olivella sp from san marguarita formation, CA. I did not find it by myself on the field. I received it from my secret santa. Do not know the genus nor the species. Share this post Link to post Share on other sites
RJB 679 Report post Posted January 4, 2017 Man-o-man,,, some cool stuff you folks are finding!!! RB Share this post Link to post Share on other sites
MB 85 Report post Posted January 8, 2017 On 4/1/2017 at 10:44 AM, David in Japan said: Small hermit crabs in an olivella sp from san marguarita formation, CA. I did not find it by myself on the field. I received it from my secret santa. Do not know the genus nor the species. Wow... interesting ! Share this post Link to post Share on other sites
MB 85 Report post Posted January 8, 2017 I do not know if I showed you one of my latest additions to my collection? Unfortunately it was a personal purchase, a small whim, since this species I did not yet have: Torynomma quadrata Woods, 1853 Share this post Link to post Share on other sites
Doctor Mud 465 Report post Posted January 8, 2017 On 4/01/2017 at 6:12 PM, Dave (POM) Allen said: i am afraid i think what you have is better than a Metacarcinus novaezelaniae what i can see is the head plate of a metanephrops motunauesis Hi Dave, Thanks for sharing these amazing specimens. That is a monster Metacarcinus! Funny you should mention the possibility of this being a Metanephrops lobster. I was tossing up between this and the underside (ventral) surface of a Metacarcinus pincer. It might not be clear from my original (taken on the Iphone) shot but the reason I went for the Metacarcinus pincer is the presence parallel ridges parallel to the long axis. Here's a clearer shot of the specimen comparing it to the ventral surface of a Metacarcinus specimen from MB's Fossil crab webpage. 1. Metacarcinus from MB's Fossil crab website 2. Original photo of my specimen 3. Cropped, rotated and enhanced image rotated to compare to MB's specimen. For comparison, here's a reconstruction of the carapace of Metanephrops motunauensis from Jenkins (1972): I can't see any similar structures. I hope to get this specimen CT scanned before prep. so lets see what happens Share this post Link to post Share on other sites
Doctor Mud 465 Report post Posted January 8, 2017 Here is a copy of the Jenkins paper on Metanephrops motunauensis: Jenkins 1972 Metanephrops.pdf Share this post Link to post Share on other sites
glu 7 Report post Posted January 8, 2017 1 hour ago, MB said: I do not know if I showed you one of my last additions to my collection? Unfortunately it was a personal purchase, a small whim, since this species I did not yet have: Torynomma quadrata Woods, 1853 Wow, it's not easy to get these Share this post Link to post Share on other sites
Dave (POM) Allen 78 Report post Posted January 8, 2017 23 hours ago, Doctor Mud said: Here is a copy of the Jenkins paper on Metanephrops motunauensis: Jenkins 1972 Metanephrops.pdf thanks and i thought i was on the money. Share this post Link to post Share on other sites
MB 85 Report post Posted January 9, 2017 You're completely right, Dr. Mud The almost parallel ridges or keels in the outer surface of the palm, are typical and sometimes diagnostic character for the cancroid and cancrid crabs. Share this post Link to post Share on other sites
glu 7 Report post Posted January 24, 2017 I recently found this weathered carapace in a oligocene spot (no formation) in Piedmont region. No crabs are described from here as far as I know. Could be some sort of Calappa? Share this post Link to post Share on other sites
MB 85 Report post Posted January 24, 2017 May be, why not... but picture is not good, will see what I have from Piedmont, a new Oligocene Calappa from the surroundings of Alessandria has been described recently by colleagues. Share this post Link to post Share on other sites
Damjan 10 Report post Posted February 20, 2017 On 20. 3. 2008 at 8:22 PM, MB said: Hello guys, I understund that you cannot living without crabs in your life, so I'm posting several photos of one the latest crabs I have finished, just for fun Perfect! Share this post Link to post Share on other sites
fossisle 44 Report post Posted February 20, 2017 Wonderful prep job Share this post Link to post Share on other sites
caterpillar 120 Report post Posted May 6, 2017 Just finished to prep Share this post Link to post Share on other sites
fossisle 44 Report post Posted May 6, 2017 2 hours ago, caterpillar said: Just finished to prep Wonderful!! Share this post Link to post Share on other sites
crabfossilsteve 12 Report post Posted May 6, 2017 Oh yes, what a lovely crabbie. Great prep work there. Share this post Link to post Share on other sites
MB 85 Report post Posted May 8, 2017 On 6/5/2017 at 0:22 PM, caterpillar said: Just finished to prep Hi dominique très joli ! But I'm doubtful, could be Harpactocarcinus punctulatus as well? a detailed picture ot the anterolateral margin could help. Share this post Link to post Share on other sites
caterpillar 120 Report post Posted May 8, 2017 I dont think Harpactocarcinus because there are no little spines all along the anterolateral margin. Just one big and a second more little. That's why I think it's Harpactoxanthopsis MILNE EDWARDS noted Harpartocarcinus jaquoti in this outcrop but I dont know the details of this species. Do you know it? Share this post Link to post Share on other sites
MB 85 Report post Posted May 12, 2017 Hi Caterpillar, I will check Share this post Link to post Share on other sites
