The relationship between the four principal pinniped karyotypes.
D000818:Animals; D010872:Caniformia / Q000235:genetics*; D002875:Chromosomes; D005260:Female; D007621:Karyotyping; D008297:Male; D046048:Seals, Earless / Q000235:genetics*; D014856:Walruses / Q000235:genetics*