Aepyornis gracilis Monnier, 1913:15
Gracile elephant bird
Taxonomy & Nomenclature
Only known from an isolated femur, and differentiated based upon its "less robust size" (Hume & Walters, 2012:26).
Now considered invalid (Hansford & Turvey, 2018)
Conservation Status
Invalid (synonym)
Distribution
Madagascar
Biology & Ecology
Hypodigm
Only known from an isolated femur (Hume & Walters, 2012:26).
Media
References
Original scientific description:
Monnier, L. (1913). Paléontologie de Madagascar 7. Les Aepyornis. Annales de Paléontologie 8: 125-172.
Other references:
Angst, Delphine and Buffetaut, Eric. (Due October 2017). Palaeobiology of Extinct Giant Flightless Birds. ISTE Press.
Brodkorb, Pierce. (1963). Catalogue of fossil birds. Part 1 (Archaeopterygiformes through Ardeiformes). Bulletin of the Florida State Museum, Biological Sciences 7, 4: 179-293.
Endo, H. et al. (2012). Coxa Morphologically Adapted to Large Egg in Aepyornithid Species Compared with Various Palaeognaths. Anatomia Histologia Embryologia 41(1): 31-40. [Abstract]
Hansford, James P. and Turvey, Samuel T. (2018). Unexpected diversity within the extinct elephant birds (Aves: Aepyornithidae) and a new identity for the world's largest bird. R. Soc. open sci. 5: 181295.
Hume, Julian Pender and Walters, Michael. (2012). Extinct Birds. London: T & AD Poyser.
Lambrecht, Kàlmàn. (1933). Handbuch der Palaeornithologie. Gebrüder Borntraeger, Berlin. 1024 pp.
Kieren J. Mitchell, Bastien Llamas, Julien Soubrier, Nicolas J. Rawlence, Trevor H. Worthy, Jamie Wood, Michael S. Y. Lee, Alan Cooper. Ancient DNA reveals elephant birds and kiwi are sister taxa and clarifies ratite bird evolution. Science, 2014 DOI: 10.1126/science.1251981
Tyrberg, Tommy. (2009). Holocene avian extinctions, pp. 63-106. In: Turvey, Samuel T. (ed.). Holocene Extinctions. Oxford, UK & New York, USA: Oxford University Press. xii + 352 pp.
Worthy, Trevor H. (2009). Fossil Birds. In: Gillespie, R., Clague, D. (eds.). Encyclopedia of Islands. Encyclopedias of the Natural World, No. 2. University of California Press.
https://extinctanimals.proboards.com/thread/9336/aepyornis-gracilis