Recent site activity

By Group‎ > ‎Gorgonopsia‎ > ‎

Inostrancevia


The largest gorgonopsid, Inostrancevia was the top predator of the Upper Permian of Russia. Up to three species have been described: I. alexandri is known from two complete skeletons, the larger I. latifrons is known from skulls and incomplete skeleton, while I. uralensis consists only of fragmentary braincases.



Name


Inostrancevia alexandri

Authority
   

Amalitskii, 1922


Meaning of the generic name


Named in honour of Russian geologist A. Inostrantzev

  Meaning of the specific name

 


Size


Length: 2.7 m, Skull length: 51 cm


Remains


Holotype (PIN 2005/1578): skeleton
Referred specimens: one skeleton, one skull and one isolated frontal


Age and Distribution


Horizon: Vyatskan Gorizont, Late Tatarian, Upper Permian
Locality: Sokolki, basin of the Little Northern Dvina River, Arkhangel'sk Province, Kotlas district, Russia.


Classification


Synapsida Therapsida Gorgonopsia Gorgonopsidae Inostranceviinae

  Further Reading

  Amalitzky, V., 1922, Diagnoses of the new forms of vertebrates and plants from the upper Permian of North Dvina: Bulletin de l’Academie des Sciences, Saint Petersburg, 6th series, v. 16, p. 329-340.

  Synonyms   Inostrancevia proclivis Pravoslavlev, 1937





Name


Inostrancevia latifrons

Authority
   

Pravoslavlev, 1927


Meaning of the generic name


Named in honour of Russian geologist A. Inostrantzev



  Meaning of the specific name

 


Size


Length: , Skull length:


Remains


Holotype (PIN 2005/1857): skull
Referred specimens: one skull and one incomplete skeleton


Age and Distribution


Horizon: Vyatskan Gorizont, Late Tatarian, Upper Permian
Locality: Sokolki, basin of the Little Northern Dvina River, Arkhangel'sk Province, Kotlas district, Russia.


Classification


Synapsida Therapsida Gorgonopsia Gorgonopsidae Inostranceviinae

  Further Reading

  Pravoslavlev, P. A., 1927, Gorgonopsidae from Professor Amalitzki’s excavations in the northern Dvina: In: Excavations by Professor Amalitzki in the northern Dvina III: Akad. Nauk. Leningrad, 117pp.

  Synonyms   Amalitzkia annae Pravoslavlev, 1927, Amalitzkia vladimiri Pravoslavlev, 1927, Amalitkia annae Vjushkov, 1953

Life reconstruction of I. alexandri attacking a Scutosaurus calf (© D. Bogdanov)


Skeleton of I. alexandri (PIN 2005/1578). From Gebauer, 2007. Scale bar is 25 cm.


Skull of I. alexandri. From Gebauer, 2007, after Amalitskii, 1922. Scale bar is 2.5 cm.


Life reconstruction of I. latifrons with Scutosaurus (© D. Bogdanov)


 
Life reconstruction of I.alexandri (© N. Tamura)

Comments