Polydolopimorphia
Extinct order of mammals
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Polydolopimorphia is an extinct order of metatherians, closely related to extant marsupials. Known from the Paleocene-Pliocene of South America and the Eocene of Antarctica, they were a diverse group during the Paleogene, filling many niches, before declining and becoming extinct at the end of the Neogene.[1] It is divided into two suborders, Bonapartheriiformes, and Polydolopiformes[2] Most members are only known from jaw fragments, which have their characteristically generally bunodont teeth.[3] The morphology of their teeth has led to proposals that polydolopimorphians may be crown group marsupials, nested within Australidelphia,[4] though this proposal, has been questioned, with other analyses finding them outside of crown-group Marsupialia.[3] The monophyly of the group has been questioned, due to the possibility of the characteristic bunodont teeth emerging convergently in unrelated groups, rather than reflecting a true phylogenetic relationship.[5] The group contained omnivorous, frugivorous and herbivorous forms.[4]
| Polydolopimorphia Temporal range: | |
|---|---|
| |
| Argyrolagus palmeri | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Clade: | Metatheria |
| Clade: | Marsupialiformes |
| Order: | †Polydolopimorphia Archer, 1984 |
| Subgroups | |
| |
Taxonomy
Taxonomical subdivision of the Polydolopimorphia:[6]
- Suborder Bonapartheriiformes
- Family Bonapartheriidae Pascual 1980
- Genus Bonapartherium Pascual 1980
- Genus Epidolops Paula Couto 1952
- Family Argyrolagidae Ameghino 1904
- Genus Anargyrolagus Carlini et al. 2007
- Genus Argyrolagus Ameghino 1904
- Genus Hondalagus Villarroel & Marshall 1988
- Genus Klohnia Flynn & Wyss 1999
- Genus Microtragulus Ameghino 1904
- Genus Proargyrolagus Wolff 1984
- Subfamily Chulpasiinae Sigé et al. 2009
- Genus Chulpasia Crochet & Sigé 1993
- Genus Thylacotinga Archer et al. 1993
- Family Prepidolopidae Pascual 1980
- Genus Incadolops Goin & Candela 2004
- Genus Perrodelphys Goin et al. 1999
- Genus Punadolops Goin et al. 1998
- Family Rosendolopidae Goin et al. 2010
- Genus Hondonadia Goin & Candela 1998
- Genus Rosendolops Goin & Candela 1996
- Family Bonapartheriidae Pascual 1980
- Suborder Polydolopiformes
- Family Polydolopidae Ameghino 1897[7]
- Genus Amphidolops Ameghino 1902
- Genus Antarctodolops Woodburne & Zinsmeister 1984
- Genus Archaeodolops Ameghino 1903
- Genus Hypodolops Chornogubsky 2020
- Genus Kramadolops Goin et al. 2010
- Genus Pliodolops Ameghino 1902
- Genus Polydolops Ameghino 1897
- Genus Pseudolops Ameghino 1902
- Family Sillustaniidae Crochet & Sigé 1996
- Genus Sillustania Crochet & Sigé 1996
- Genus Roberthoffstetteria Marshall et al. 1983
- Family Polydolopidae Ameghino 1897[7]
- incertae sedis
- Genus Prepidolops Pascual 1980
- Genus Wamradolops Goin & Candela 2004
- Genus Bobbschaefferia Paula Couto 1970