Dugongidae's body weight ranges from 217 to 307 kg for juveniles, 334 to 424 kg for subadults, and 435 to 568.5 kg for adults. Oral temperatures for individual dugongs is determined from 24° to 34.2 °C. Heart rate readings are from 40 to 96 bpm and vary between individual dugongs. Respiration rate during the out-of-water phase is from 1 to 33.[2]
The generaEosiren,Eotheroides, andPrototherium have been assigned to Halitheriinae in the past, but recent cladistic analysis recovers these genera as basal to the clade formed by Trichechidae and Dugongidae. Moreover, Halitheriinae is paraphyletic with respect to Dugonginae and Hydrodamalinae, and further use of the name should be discontinued because the type genus is based on a non-diagnostic tooth.[8]
^Lanyon, Janet M., et al (2010). “Physiological Response of Wild Dugongs (Dugong dugon) to Out-of-Water Sampling for Health Assessment.” Aquatic Mammals, vol. 36, pp. 46-58.doi:10.1578/AM.36.1.2010.46.
^Manja Voss & Oliver Hampe (2017). "Evidence for two sympatric sirenian species (Mammalia, Tethytheria) in the early Oligocene of Central Europe". Journal of Paleontology. in press.doi:10.1017/jpa.2016.147.
^Vélez-Juarbe, Jorge; Domning, Daryl P. (2014). "Fossil Sirenia of the West Atlantic and Caribbean region. X.Priscosiren atlantica, sp. nov".Journal of Vertebrate Paleontology.34 (4): 951.doi:10.1080/02724634.2013.815192.S2CID85297028.
^Manja Voss; Silvia Sorbi; Daryl P. Domning (2017). "Morphological and systematic re-assessment of the late Oligocene "Halitherium" bellunense reveals a new crown group genus of Sirenia". Acta Palaeontologica Polonica. 62 (1): 163–172.doi:10.4202/app.00287.2016.
^Furusawa, Hitoshi (1988).A new species of hydrodamaline Sirenia from Hokkaido, Japan. Takikawa Museum of Art and Natural History. pp. 1–73.
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