Xenorophidae

Xenorophidae is an extinct family of odontocetes, currently known from the Oligocene of the Southeastern United States. Known genera of xenorophids include Albertocetus, Archaeodelphis, Xenorophus,^[2] Cotylocara,^[3] Echovenator,^[4] and Inermorostrum.^{[5][excessive citations]}

Albertocetus reconstruction outline, showing known bones in red. From Boessenecker et al. 2017

Xenorophidae Temporal range: 30–23.03 Ma PreꞒ Ꞓ O S D C P T J K Pg N Oligocene[1]
Cotylocara
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Artiodactyla
Infraorder:	Cetacea
Parvorder:	Odontoceti
Family:	†Xenorophidae Uhen, 2008
Genera
Albertocetus Archaeodelphis Cotylocara Echovenator Inermorostrum Mirocetus Xenorophus

References

1. "Xenorophidae". paleobiodb.org.
2. Uhen, M.D. (2008). "A new Xenorophus-like odontocete cetacean from the Oligocene of North Carolina and a discussion of the basal odontocete radiation". Journal of Systematic Palaeontology. 6 (4): 433–452. Bibcode:2008JSPal...6..433U. doi:10.1017/S1477201908002472. S2CID 86668273.
3. Geisler, J.H.; Colbert, M.W.; Carew, J.L. (2014). "A new fossil species supports an early origin for toothed whale echolocation". Nature. 508 (7496): 383–386. Bibcode:2014Natur.508..383G. doi:10.1038/nature13086. PMID 24670659. S2CID 4457391.
4. Churchill, M.; Martinez-Caceres, M.; et al. (2016). "The origin of high-frequency hearing in whales". Current Biology. 26 (16): 2144–2149. Bibcode:2016CBio...26.2144C. doi:10.1016/j.cub.2016.06.004. PMID 27498568..
5. Geisler, J.H.; Boessenecker, R.W.; et al. (2017). "The origin of filter feeding in whales". Current Biology. 27 (13): 2036–2042.e2. Bibcode:2017CBio...27E2036G. doi:10.1016/j.cub.2017.06.003. PMID 28669761..