Stirtodon

Stirtodon is an extinct genus of monotreme mammal from the Late Cretaceous (Cenomanian) Griman Creek Formation of Australia. The genus contains a single species, S. elizabethae, known from a large isolated premolar. Stirtodon may be the largest toothed monotreme discovered.^[1][2] Several other monotremes are known from the Griman Creek Formation, including Dharragarra, Kollikodon, Opalios, Parvopalus, and Steropodon.^[3]

Stirtodon Temporal range: Late Cretaceous (Cenomanian), 100.2–96.6 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Monotremata
Family:	†Teinolophidae (?)
Genus:	†Stirtodon
Species:	†S. elizabethae
Binomial name
†Stirtodon elizabethae Flannery et al., 2020

References

1. Rich, Thomas H.; Flannery, Timothy F.; Vickers-Rich, Patricia (2020). "Evidence for a Remarkably Large Toothed-Monotreme from the Early Cretaceous of Lightning Ridge, NSW, Australia". In Prasad, Guntupalli V.R.; Patnaik, Rajeev (eds.). Biological Consequences of Plate Tectonics: New Perspectives on Post-Gondwana Break-up–A Tribute to Ashok Sahni. Springer Nature. pp. 77–81. doi:10.1007/978-3-030-49753-8_4. ISBN 978-3-030-49753-8.
2. Flannery, Timothy F.; Rich, Thomas H.; Vickers-Rich, Patricia; Ziegler, Tim; Veatch, E. Grace; Helgen, Kristofer M. (2022-01-02). "A review of monotreme (Monotremata) evolution". Alcheringa: An Australasian Journal of Palaeontology. 46 (1): 3–20. doi:10.1080/03115518.2022.2025900. ISSN 0311-5518.
3. Flannery, Timothy F.; McCurry, Matthew R.; Rich, Thomas H.; Vickers-Rich, Patricia; Smith, Elizabeth T.; Helgen, Kristofer M. (2024-05-26). "A diverse assemblage of monotremes (Monotremata) from the Cenomanian Lightning Ridge fauna of New South Wales, Australia". Alcheringa: An Australasian Journal of Palaeontology: 1–19. doi:10.1080/03115518.2024.2348753. ISSN 0311-5518.