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Rytiodus

Mammalia - Dugongidae

Synonyms
Synonymy list
YearName and author
1866Rhytiodus Lartet p. 682
1866Rytiodus Lartet p. 682 figs. Plate XIII Fig. 2-7
1898Rhytiodus Trouessart p. 1006
1904Rytiodus Palmer p. 614
1904Rhytiodus Trouessart p. 750
1919Rhytiodus Abel p. 834
1925Rhytiodus Zittel p. 265
1932Rytiodus Simpson p. 424
1941Rytiodus Kretzoi p. 155
1973Rytiodus Heal p. 89
1978Rytiodus Domning
1987Thelriope Pilleri p. 65 figs. Plate XXXIX
1988Rytiodus Carroll
1989Rytiodus Domning p. 417
1991Rytiodus Toledo and Domning p. 130
1994Rytiodus Domning p. 189
1996Rytiodus Domning p. 391
1997Rytiodus Domning p. 398
1999Rytiodus Bergqvist et al. p. 31
2002Rytiodus Sepkoski, Jr.
2011Rytiodus Domning p. 1340
2014Rytiodus Voss p. 91 figs. Figure 3
2017Rytiodus Berta p. 170
2018Rytiodus Domning p. 857 figs. Fig. 1
2019Rytiodus Samonds et al. p. 2

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
RankNameAuthor
Amniota
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
Pansirenia
Sirenia()
familyDugongidae
subfamilyDugonginae
genusRytiodus

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
D. P. Domning 2011Dugongine dugongids characterized by large tusks [c. 140(2)] that are broad and extremely flattened mediolaterally [c. 141(3)], with enamel mainly on medial side [c. 142(1)]; premaxillae with nasal processes that circumscribe an al- most rectangular anterior end of the mesorostral fossa, and are broadened and bulbous at their posterior end, having a more or less vertical joint surface with frontal [c. 6(2)]; thick, strongly downturned supraorbital process of frontal [c. 36(1), 43(1)]; con- cave frontal roof sloping ventrad to anterior margin [c. 42(2)], and temporal crests closely approximated in midline; and retain- ing the following states that are primitive for dugongines: nasals relatively large, not fused with frontals; and posterior process of jugal long [c. 89(0)].