Mononykus


1 - Alvarezsaurus, 2 - Mononykus, 3 - Shuvuuia.

Name: Mononykus ‭(‬one claw‭)‬.
Phonetic: Mo-non-e-kus.
Named By: A.‭ ‬Perle,‭ ‬M.‭ ‬A.‭ ‬Norell,‭ ‬L.‭ ‬M.‭ ‬Chiappe‭ & ‬J.‭ ‬M.‭ ‬Clark‭ ‬-‭ ‬1993.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Saurischia,‭ ‬theropoda,‭ ‬Alvarezsauridae,‭ ‬Mononykini.
Species: M.‭ ‬olecranus‭ (‬type.‭)‬.
Diet: Insectivore‭?
Size: Estimated about‭ ‬1‭ ‬meter long.
Known locations: Mongolia‭ ‬-‭ ‬Nemegt Formation.
Time period: Campanian of the Cretaceous.
Fossil representation: Partial anterior skeleton lacking the tail,‭ ‬partial skull bones.

       Mononykus has a close relationship with another genus of alvarezsaur named Shuvuuia in that many of the fossils once attributed‭ ‬to‭ ‬Mononykus olecranus were found to be of a distinct genus,‭ ‬and these were moved to their own genus named Shuvuuia.‭ ‬Hence many of the older reconstruction and information resources about Mononykus are actually referencing fossil remains that now belong to Shuvuuia.‭ ‬On a quick side note,‭ ‬Mononykus was also originally named as Mononychus,‭ ‬but it was quickly realised that this name was pre-occupied by a genus of beetle,‭ ‬hence the spelling change to Mononykus.
       The name Mononykus is a reference to the enlarged thumb claw that in the holotype specimen of Mononykus is seven and a half centimetres long.‭ ‬Although not known for certain for Mononykus,‭ ‬relative genera like Shuvuuia have been proven to have had at least a primitive feather covering over their bodies,‭ ‬and it‭’‬s plausible that Mononykus may have also had this covering.
       Potential threats to Mononykus may include dromaeosaurids like Adasaurus,‭ ‬and troodonts like Zanabazar.

Further reading
-‭ ‬Correction:‭ ‬Flightless bird from the Cretaceous of Mongolia.‭ ‬-‭ ‬Nature‭ ‬363:188‭ ‬-‭ ‬A.‭ ‬Perle,‭ ‬M.‭ ‬A.‭ ‬Norell,‭ ‬L.‭ ‬M.‭ ‬Chiappe‭ & ‬J.‭ ‬M.‭ ‬Clark‭ ‬-‭ ‬1993.
-‭ ‬The skull of a relative of the stem-group bird Mononykus.‭ ‬-‭ ‬Nature,‭ ‬392:‭ ‬275‭–‬278.‭ ‬-‭ ‬Chiappe,‭ ‬Norell‭ & ‬Clarke‭ ‬-‭ ‬1998.
-‭ ‬Beta-keratin specific immunological reactivity in feather-like structures of the Cretaceous alvarezsaurid,‭ ‬Shuvuuia deserti.‭ ‬-‭ ‬Journal of Experimental Zoology‭ (‬Mol Dev Evol‭)‬,‭ ‬285:‭ ‬146-157.‭ ‬-‭ ‬M.‭ ‬H.‭ ‬Schweitzer,‭ ‬J.A.‭ ‬Watt,‭ ‬R.‭ ‬Avci,‭ ‬L.‭ ‬Knapp,‭ ‬L.‭ ‬Chiappe,‭ ‬M.‭ ‬Norell‭ & ‬M.‭ ‬Marshall‭ ‬-‭ ‬1999.
-‭ ‬Function in the stunted forelimbs of Mononykus olecranus‭ (‬Theropoda‭)‬,‭ ‬a dinosaurian anteater.‭ ‬-‭ ‬Paleobiology Vol.‭ ‬31,‭ ‬No.‭ ‬3‭ ‬pp.‭ ‬373‭–‬381.-‭ ‬P.‭ ‬Senter‭ ‬-‭ ‬2005.



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