Skeletal measurements (cm) of <i>Maiacetus inuus</i> compared to those of the previously known protocetids <i>Artiocetus clavis</i> and <i>Rodhocetus balochistanensis</i>, which are also from the early middle Eocene of Pakistan [3].

Sexes of the A. clavis and R. balochistanensis specimens are not known. *Asterisk indicates estimated measurement. 1Body weight is estimated from the centrum size of available thoracic vertebrae, using multiple regression and a reference set of 13 marine mammal skeletons of known weight (8 cetaceans and 5 pinnipeds) spanning a range of 85 to 23,500 kg (see Figure 13). Weight for female Maiacetus inuus is estimated from male M. inuus in two ways: using the 12% average difference in comparable linear dimensions or the 4% average difference found for premolars and molars (Table 2). 2Ratio based on measurements of male and female adult specimens in Maiacetus inuus.