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Zimices — Mastodont and plesiosaur
#gomphotherid #callawayasaurus #notiomastodon #fossils #plesiosaur #kronosaurus
Published: 2017-12-10 09:38:23 +0000 UTC; Views: 2301; Favourites: 35; Downloads: 6
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Description
Notiomastodon in the background, and the head and neck of the elasmosaurid Callawayasaurus in the foreground; at the left, a model of Kronosaurus boyacensis. Geological Museum José Royo y Gómez, Bogotá.Related content
Comments: 23
What an incredibully powerfully built, robust, beautiful proboscidean Notiomastodon should have been!
Probably my favorite gomphotherid along with Tetralophodon. Thanks for sharing these amazing museum photos!
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I agree, is nice to see how robust was, and surely a very beautiful animal by its own right. No problem, by the way I'll put more photos of this museum.
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Thanks! wooo the baby Purussaurus crania certainly is a super rare spectacle.
And Notiomastodon indeed is simply too interesting, all the more so, given the new hypothesis that recognises the genus as being the true identity of the mysterious Miocene gomphotherid of South America, Amahuacatherium peruvium.
While the validity of its lower incisors and particular characters may still need further investigations regarding its true taxonomic status, do you think its assinged geologic age (the Miocene) is now secured? If so, Notiomastodon sp., or whatever gomphotherid it turns out to be, was probably contemporaneous with Purussaurus itself in northern South America...!!
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Ohh, so you have read the abstract of the new work on Notiomastodon! Yes, is very interesting, since that means that Notiomastodon is actually a true Southern American gomphotherid, and as you said, it was comtemporary of the Pebas fauna. I heard that the age of "Amahuacatherium" is based both in the geological context as paleomagnetic datations, so is possible that its age be secure.
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Yes, that is exactly the source I read, which was one of phylogeny related topics presented at the prestigious VII Mammoths and Their Relatives conference. Some of my friends also participated in the meeting as well.
I agree, its assigned Miocene age seems convincing, especially adding that there occured a well documented late Miocene mammal immigration pulse between Americas, when two sloths migrated from south to north and a procyonid migrated from north to south. 'Amahuacatherium' (perhaps with its typical proboscidean swmming ability) must be a part of this pre-Pliocene GAFI event.
The Amahuacatherium mystery remains one of the most hottly debated topics in recent paleontology and now it probably enters a new phase with this Notiomastodon proposal from very prolific researchers(Avilla and Mothé).
Personally, I tend to believe that it should not be odd for Notiomastodon in its earliest evolutional stages (in northern South America) to have had lower tusks, even though their molars were already within N. platensis molar variation. In relation to that, I'm also interested in ancestral lineage leading to Notiomastodon, because the new theory probably contradicts the idea that Notiomastodon was derived from Cuvieronius.
This mystery is still baffling and intriguing in several aspects in my opinion!
P.s., I probably ask you about the Pebas fauna sometimes, hopefully it's alright with you
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Hmm, a Notiomastodon could be interesting... I guess that Notiomastiodon and Cuvieronius both evolved from Rhynchotherium? In any case, is a interesting topic, as Avilla and Mothé also believe that is time to get a new family for these probocideans!
Yeah, if I can help you with the creatures of the Pebas system I'll be glad to help.
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Thanks in advance, that will be greatly appreciated!
Yeah they are really prolific researchers and lately putting fourth some very interesting hypothesis regarding gomphotherid re-classification... I will keep looking foreword to their future outputs which may result in significantly reducing and re-arranging once too much diverse group we know as 'Gomphotheridae'.
Rhynchotherium could be the one I believe, however Avilla and Mothé also point out that Notiomastodon varies from Rhynchotherium and Cuvieronius in some important molar characters while the latter two were closely related, probably forming a sister group. So perhaps Notiomastodon were deriving from the still unknown ghost lineage that was somehow related to Sinomastodon, because Sinomastodon were considered by Avilla and Mothé to have been basal taxon within a monophyletic group that includes Notiomastodon, Sinomastodon, Cuvieronius + Rhynchotherium.
That's just my opinion but either way, very interesting topic indeed.
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Yeah, very interesting. The ghost lineages of Notiomastodon, and the exact relationship with Stegomastodon and Sinomastodon will be the focus in the next years...
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Ese Kronosaurus me recuerda al de Carnegie Collection xD
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Y cabezon xD. Por cierto relanzaron el de Carnegie en un retool por la casa de Safari, nose si lo sabias pero Carnegie cerro la linea de figuras
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Si sabía del cierre de Carnegie 
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El marron o el verde? Relanzaron hace poco algunas con safari
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El verde, el que arrastra la cola por el piso.
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Si, jeje, más exactamente la versión con los dientes solo pintados. dinotoyblog.com/2010/11/26/tyr…
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Me gustaban mas esos modelos que las reediciones posteriores, por cierto que opinas de las figuras de este nuevo año?
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¿Las de Safari? Recién miro las más recientes, jeje. Para 2018 tienen mamíferos extintos muy buenos, el mastodonte americano, Daeodon, Uintatherium y Megacerops se ven muy bien. Anzu y Ankylosaurus también me gustaron, pero el Regaliceratops se ve algo raro, no sé porqué.
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Jajaja, aunque el de Carnegie es prácticamente una salchicha con fauces. Este es más gordito y cuellicorto. 
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Yes, is that species - I'll add in the description.
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