| Xenosiren yucateca Domning, 1989 ( 7 ) |
| x | | * | 1989d | Domning, D.P. (n.gen.n.sp.; Mioc. or Plioc., Mexico; 429-437.) |
| x | | | 1990b | Domning, D.P. (comp. w/ Corystosiren varguezi; 362, 368-369.) |
| x | | | 1991 | Toledo & Domning (comp. w/ Dioplotherium cf. allisoni, 123-124, 130; comp. w/ cf. Rytiodus, 132-133, 135.) |
| x | | | 1993 | Perrilliat, M. (in catalog of type specimens, Mexico; 39-40.) |
| x | | | 1997 | Bajpai & Domning (comp. w/ other dugongines in cladistic analysis; 224-226.) |
| x | | | 1997b | Domning, D.P. (comp. w/ Crenatosiren olseni & other dugongines in cladistic analysis; 398, 403, 409.) |
| | | | 2012 | Vélez-Juarbe et al. |