Name: Gaviacetus ‭(‬Loon whale‭)‬.
Phonetic: Gah-ve-ah-see-tus.
Named By: P.‭ ‬D.‭ ‬Gingerich,‭ ‬M.‭ ‬Arif‭ & ‬W.‭ ‬C.‭ ‬Clyde‭ ‬-‭ ‬1995.
Classification: Chordata,‭ ‬Mammalia,‭ ‬Cetacea,‭ ‬Archaeoceti,‭ ‬Protocetidae.
Species: G.‭ ‬razai‭ (‬type‭)‬.
Diet: Carnivore.
Size: Uncertain.
Known locations: Pakistan‭ ‬-‭ ‬Domanda Formation.
Time period: Lutetian of the Eocene.
Fossil representation: Partial skull and post cranial skeletal remains including vertebrae and ribs.

       Gaviacetus is usually interpreted as a protocetid,‭ ‬a very primitive kind of whale that would have still possessed legs for terrestrial locomotion,‭ ‬though in the past Gaviacetus has also been considered to be a possible basilosaurid.‭ ‬However,‭ ‬at the time of writing there is little evidence to conclusively prove that Gaviacetus was a basilosaurid.‭ ‬There was once another species of Gaviacetus called G.‭ ‬sahnii,‭ ‬but this has since been re-named as a new genus,‭ ‬Kharodacetus.

Further reading
-‭ ‬New archaeocetes‭ (‬Mammalia,‭ ‬Cetacea‭) ‬from the Middle Eocene Domanda Formation of the Sulaiman Range,‭ ‬Punjab‭ (‬Pakistan‭)‬.‭ ‬-‭ ‬Contributions from the Museum of Paleontology,‭ ‬University of Michigan‭ ‬29‭(‬11‭)‬:291-330.‭ ‬-‭ ‬P.‭ ‬D.‭ ‬Gingerich,‭ ‬M.‭ ‬Arif‭ & ‬W.‭ ‬C.‭ ‬Clyde‭ ‬-‭ ‬1995.


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