| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Stirtodon
Taxonomy
Stirtodon was named by Rich et al. (2020). Its type is Stirtodon elizabethae.
It was assigned to Monotremata by Rich et al. (2020) and Poropat et al. (2023).
It was assigned to Monotremata by Rich et al. (2020) and Poropat et al. (2023).
Species
S. elizabethae (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2020 | Stirtodon Rich et al. p. 78 |
| 2023 | Stirtodon Poropat et al. p. 173 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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
| Reference | Diagnosis | |
|---|---|---|
| T. H. Rich et al. 2020 | Distinguished from the known upper premolars of toothed monotremes by its significantly greater size: more than eleven times as long anteroposteriorly as the upper premolar of Teinolophos trusleri, three times as long as the ultimate upper premolar Kollikodon ritchei, and almost twice as long as the P2 of Obdurodon dicksoni. Distinguished from K. ritchei by the presence of two major cusps rather than three and a quite different outline in occlusal view. Distinguished from O. dicksoni by the lack of a well-developed cingulum on the anterior margin of the crown and the presence of a low cusp on the posterior margin of the tooth, Cusp C. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|||||
|
|
||||
| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Luo et al. 2003, Carroll 1988, Hendy et al. 2009, Hopson 1973 | |||||
Age range: base of the Early/Lower Cenomanian to the top of the Middle Cenomanian or 99.60000 to 93.50000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Cenomanian - Middle Cenomanian | Australia (New South Wales) | S. elizabethae (224429) |