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  • Sigilmassasaurus vertebra


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    LordTrilobite
    • Fourth cervical vertebra of a Spinosaurid. Very likely Sigilmassasaurus due to the short dorsal spine and proportions of the postzygapophyses.

    Taxonomy

    Spinosaur

    Kingdom: Animalia
    Phylum: Chordata
    Class: Reptilia
    Order: Saurischia
    Family: Spinosauridae
    Genus: Sigilmassasaurus
    Species: S. brevicollis
    Author Citation Russell, 1996

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Cretaceous
    Epoch: Late
    International Age: Cenomanian

    Stratigraphy

    Kem Kem Compound Assemblage
    Ifezouane formation

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Blank: 112.3mm

    Location

    Ouzina
    Kem Kem Beds
    Errachidia province
    Morocco

    Comments

    Fourth cervical vertebra of a Spinosaurid. Very likely Sigilmassasaurus due to the short dorsal spine and proportions of the postzygapophyses.



    User Feedback


    indominus rex

    Posted · Report

    That's a really nice spinosaurus vertebra. I hope to one day own some spinosaurus vertebrae as well, it is one of my favourite dinosaurs:wub::trex:.

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    LordTrilobite

    Posted · Report

    Thanks, I quite like this specimen as well. But to be clear. This is not Spinosaurus, it is in Spinosauridae. But this morphology fits more closely with Sigilmassasaurus brevicollis, the other Spinosaurid that is present in the Kem Kem beds. Sigilmassasaurus seems to be more closely related to Baryonyx and Suchomimus than to Spinosaurus. So it's likely this animal also lacked a dorsal sail, though not a whole lot is known about this animal.

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    indominus rex

    Posted · Report

    2 minutes ago, LordTrilobite said:

    Thanks, I quite like this specimen as well. But to be clear. This is not Spinosaurus, it is in Spinosauridae. But this morphology fits more closely with Sigilmassasaurus brevicollis, the other Spinosaurid that is present in the Kem Kem beds. Sigilmassasaurus seems to be more closely related to Baryonyx and Suchomimus than to Spinosaurus. So it's likely this animal also lacked a dorsal sail, though not a whole lot is known about this animal.

    Oh, my bad. But it is still awesome and I still love all Spinosauridae. And also correct me if I am wrong but is Sigilmassaurus bones more rare on the market than Spinosaurus bones?

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    LordTrilobite

    Posted · Report

    3 minutes ago, indominus rex said:

    Oh, my bad. But it is still awesome and I still love all Spinosauridae. And also correct me if I am wrong but is Sigilmassaurus bones more rare on the market than Spinosaurus bones?

    I don't think a conclusion can be reached on that at this time. Spinosaurid fossils are very common in the Kem Kem beds. But many cannot be identified to genus level. Spinosaurus itself is more popular so there might be a bias on the market. But I've seen many Sigilmassasaurus fossils on the market as well, which are almost invariably being sold as Spinosaurus because they are either misidentified or to be more salable. But I can say that all the Spinosaurid vertebrae I have that I can identify to genus are all Sigilmassasaurus. But this is likely due to Spinosaurus vertebrae being more expensive.

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