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Derived traits in R. kasrani, relative to older archaeocetes such as Pakicetus, include high-crowned cheek teeth, larger auditory bullae, larger mandibular foramen, and mandibular canals. The higher neural spines and shorter femur (60–70%) distinguish Rodhocetus from the more primitive Ambulocetus.
However, what is clear is that they are adapted even further to an aquatic life-style. In Rodhocetus, for example, the sacrum – a bone that in land-mammals is a fusion of five vertebrae that connects the pelvis with the rest of the vertebral column – was divided into loose vertebrae.
The list of extinct cetaceans features the extinct genera and species of the order Cetacea.The cetaceans (whales, dolphins and porpoises) are descendants of land-living mammals, the even-toed ungulates.
It is possible that some protocetids had flukes. However, it is clear that they were adapted even further to an aquatic life-style. In Rodhocetus, for example, the sacrum (a bone that, in land-mammals, is a fusion of five vertebrae that connects the pelvis with the rest of the vertebral column) was divided into loose vertebrae. However, the ...
Rodhocetus (Gingerich et al. 1994) Takracetus (Gingerich, Arif & Clyde 1995) Togocetus (Gingerich & Cappetta 2014) Basilosauridae Basilosaurinae Basilosaurus (Harlan 1834) Basiloterus (Gingerich et al. 1997) Eocetus Dorudontinae Ancalecetus (Gingerich & Uhen 1996) Basilotritus (Goldin & Zvonok 2013) Chrysocetus (Uhen & Gingerich 2001)
Remingtonocetidae was established by Kumar & Sahni 1986.It was considered monophyletic by Uhen 2010.It was assigned to Odontoceti by Benton 1993; to Remingtonocetoidea by Mitchell 1989 and Rice 1998; to Archaeoceti by Bianucci & Landini 2007; to Archaeoceti by Kumar & Sahni 1986, Fordyce & Barnes 1994, Fordyce, Barnes & Miyazaki 1995, McKenna & Bell 1997, Fordyce & Muizon 2001, Gingerich et al ...
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Life on Our Planet is an American television nature documentary series released on Netflix and produced by Amblin Television and Silverback Films.Executive-produced by Steven Spielberg and narrated by Morgan Freeman, the series focuses on the evolutionary history of complex life on Earth.