Inason Posted July 27, 2017 Share Posted July 27, 2017 A friend from Somalia gave me this rock. he said he found in Hargeisa (northern Somalia). That's all I know about. any ideas what it could be?. the last picture is teh under side. Link to comment Share on other sites More sharing options...
Kane Posted July 27, 2017 Share Posted July 27, 2017 I don't think this is a snake head, sadly. Instead, this looks to be a brachiopod, possibly a spiriferid. One giveaway is the hinge at the lower end. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Inason Posted July 27, 2017 Author Share Posted July 27, 2017 Link to comment Share on other sites More sharing options...
caterpillar Posted July 27, 2017 Share Posted July 27, 2017 Rhynchonella for me http://www.paleotheque.fr Link to comment Share on other sites More sharing options...
Miocene_Mason Posted July 27, 2017 Share Posted July 27, 2017 3 minutes ago, caterpillar said: Rhynchonella for me These are sometimes found in Somalia, according to the internet. “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
Inason Posted July 27, 2017 Author Share Posted July 27, 2017 Underbelly Link to comment Share on other sites More sharing options...
Fossildude19 Posted July 27, 2017 Share Posted July 27, 2017 Nice Brachiopod. Rhynchonellid. Link to images 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...
Kane Posted July 27, 2017 Share Posted July 27, 2017 Yeah, I think Rhynchonella sp. is a pretty solid guess in this case. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Inason Posted July 27, 2017 Author Share Posted July 27, 2017 Thanks all for information Link to comment Share on other sites More sharing options...
FossilDAWG Posted July 27, 2017 Share Posted July 27, 2017 I know I'm being a curmudgeon about this, but putting an actual genus name (Rhynchonella) on a specimen of unknown geological origin and age seems a bridge too far. It could actually be a Rhychonella, but given the level of homeomorphy within the group labeling it as a "rhynchonellid", or at most cf Rhynchonella (comparable form to Rhynchonella) would be more appropriate. Don Link to comment Share on other sites More sharing options...
Kane Posted July 27, 2017 Share Posted July 27, 2017 4 minutes ago, FossilDAWG said: I know I'm being a curmudgeon about this, but putting an actual genus name (Rhynchonella) on a specimen of unknown geological origin and age seems a bridge too far. It could actually be a Rhychonella, but given the level of homeomorphy within the group labeling it as a "rhynchonellid", or at most cf Rhynchonella (comparable form to Rhynchonella) would be more appropriate. Don Point well taken, and not curmudgeonly at all. Without more information on origin, we are consigned to venturing "best guesses" and so we ought to hedge these with "resembles" or "looks like." At best, we can say it is an articulate brachiopod that has a resemblance to Rhynchonellids. Perhaps the OP can ask his friend a few more questions about the locality it was collected from. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
westcoast Posted July 27, 2017 Share Posted July 27, 2017 Wholeheartedly agree with fossildawg. Link to comment Share on other sites More sharing options...
erose Posted July 27, 2017 Share Posted July 27, 2017 But in a way I had never noticed before they do kind of look like snake heads! Where would we be without our imaginations? Link to comment Share on other sites More sharing options...
abyssunder Posted July 27, 2017 Share Posted July 27, 2017 I agree with the others on a rhynchonellid brachiopod. I think, first of all, it would be important to know the geological age of the sediments where the specimen comes from. My initial thought related to the ID was either Somalirhynchia africana, Burmirhynchia sp. or Cymatorhynchia sp., but, considering the tectonic evolution of the sedimentary basins, the region (Hargeisa) looks to be in a Cretaceous/Paleocene-Eocene/Pleistocene-onward realm (according to Ali & Watts, 2015), so, probably, the mentioned genera could be ruled out, in the condition if the specimen in question is not transported material from the Middle/Upper Jurassic sediments from the west. If not, it could be one of them, possibly the former (?). excerpt from Kiessling et al. 2011. Marine benthic invertebrates from the Upper Jurassic of northern Ethiopia and their biogeographic affinities. Journal of African Earth Sciences 59:195–214 excerpt from Feldman et al. 2001. BRACHIOPODS FROM THE JURASSIC (CALLOVIAN) OF HAMAKHTESH HAGADOL (KURNUB ANTICLINE), SOUTHERN ISRAEL. Palaeontology, Vol. 44, Part 4: 637-658 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Inason Posted July 28, 2017 Author Share Posted July 28, 2017 13 hours ago, Kane said: Point well taken, and not curmudgeonly at all. Without more information on origin, we are consigned to venturing "best guesses" and so we ought to hedge these with "resembles" or "looks like." At best, we can say it is an articulate brachiopod that has a resemblance to Rhynchonellids. Perhaps the OP can ask his friend a few more questions about the locality it was collected from. Unfortunately I was unable to gather any further information from the friend. She said she found it outside her house. It seems to me someone else may have lost it/thrown it away. Link to comment Share on other sites More sharing options...
caterpillar Posted July 28, 2017 Share Posted July 28, 2017 14 hours ago, FossilDAWG said: I know I'm being a curmudgeon about this, but putting an actual genus name (Rhynchonella) on a specimen of unknown geological origin and age seems a bridge too far. It could actually be a Rhychonella, but given the level of homeomorphy within the group labeling it as a "rhynchonellid", or at most cf Rhynchonella (comparable form to Rhynchonella) would be more appropriate. Don Yes, I'm agree. It's just an error of language. (As you say, french people don't speak very well english). I thought Rhynchonellid and I've written Rhynchonella http://www.paleotheque.fr Link to comment Share on other sites More sharing options...
KCMOfossil Posted October 21, 2017 Share Posted October 21, 2017 On 7/27/2017 at 10:59 AM, Fossildude19 said: Nice Brachiopod. I agree. Nice! Link to comment Share on other sites More sharing options...
doushantuo Posted October 21, 2017 Share Posted October 21, 2017 The following publications might be relevant for the discussion: West's 1926 "Mesozoic Fossils of Somaliland*" * Africa has a peculiar history,remember? or :Stefanini, G. 1925. Description of fossils from South Arabia and British Somaliland. In, O.H. Little (Ed.) The Geography and Geology of Makalla, South Arabia. Geological Survey of Egypt, Cairo, p. 142-208. For those who doubt the importance of internal features for a consistent taxonomy of rhynchonellids,I recommend Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.