Table 2 Summary of the presence of double intraretinal vessels in monotremes and marsupials studied to date.
| Classification | Intraretinal vasculature | Extraretinal vasculature | Reference |
|---|---|---|---|
| Class Mammalia | |||
| Subclass Prototheria (monotremes) | |||
| Family Tachyglossidae | |||
| Tachyglossus aculeatus (echidna) | No | ? | Present study |
| Subclass Marsupialia (marsupials) | |||
| Order Dasyuromorphia (carnivorous marsupials) | |||
| Family Thylacinidae (Thylacine) | |||
| Thylacine cynocephalus (Tasmanian tiger)* | Yes | No | 6,13,14 |
| Family Dasyuridae (dasyurids) | |||
| Antechinus godmani (broad‐footed marsupial mouse or Atherton antechinus) | Yes | ? | Present study |
| Dasyurus viverrinus (Eastern quoll) | Yes | ? | 9,15,16 |
| Sacrophilus harrisi (Tasmanian devil) | Yes | No | 9,16,17 |
| Sminthopsis crassicaudata (fat‐tailed Dunnart) | Yes | ? | 11; Present study |
| Sminthopsis griseoventer (grey‐bellied Dunnart) | Yes | ? | Present study |
| Family Myrmecobiidae (numbats) | |||
| Myrmecobius fasciatus (numbat) | Yes | ? | Present study |
| Order Didelphimorphia (American marsupials) | |||
| Family Didelphidae | |||
| Didelphis virginiana (North American opossum) | Yes | No | 10,18 |
| Marmosa mexicana (Mexican mouse opossum) | Yes | No | 6,18 |
| Order Peramelemorphia (bandicoots and bilbies) | |||
| Family Peramelidae (bandicoots) | |||
| Isoodon macrourus (Northern brown bandicoot) | No | Yes | 19 |
| Isoodon obesulus (Southern brown bandicoot) | No | Yes | 17,19 |
| Macrotis lagotis (Bilby) | No | Yes | 17,19 |
| Order Diprotodontia (kaola, wombats, possums, macropods) | |||
| Family Phalangeridae (brushtail possums, cuscuses, scaly‐tailed possum) | |||
| Trichosurus vulpecula (common brush‐tailed possum) | No | Yes | 9 |
| Family Tarsipedidae (honey possum) | |||
| Tarsipes rostratus (honey possum) | No | ? | Present study |
| Family Petauridae (striped possum, leadbeaters possum, wrist‐winged gliders) | |||
| Petaurus breviceps (sugar glider) | No | ? | 9,17,20 |
| Family Potoroidae (poteroos and bettongs) | |||
| Family Macropodidae (kangaroos, wallabies, tree kangaroos) | No | 16,17,20 |
*Now extinct.