Mullerornis

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Mullerornis
Temporal range: Quaternary
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Mullerornis agilis.jpg
Life restoration
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Infraclass: Palaeognathae
Order: Aepyornithiformes
Genus: Mullerornis
Milne-Edwards & Grandidier 1894
Type species
Mullerornis betsilei
Milne-Edwards & Grandidier 1894
Species
  • M. modestus(Milne-Edwards & Grandidier, 1869) Hansford & Turvey 2018
Mullerornis map.jpg
Map of Madagascar showing where specimens have been found
Synonyms
  • FlacourtiaAndrews 1895
  • Aepyornis modestusMilne-Edwards & Grandidier 1869
  • Mullerornis agilisMilne-Edwards & Grandidier, 1894
  • Mullerornis betsileiMilne-Edwards & Grandidier, 1894
  • Mullerornis rudisMilne-Edwards & Grandidier, 1894 [1]
  • Flacourtia rudis(Milne-Edwards & Grandidier 1894) Andrews 1895
  •  ?Mullerornis grandisLamberton 1934

Mullerornis modestus is an extinct species of elephant bird, and the only member of the genus Mullerornis.

Contents

Taxonomy

The genus is named after Georges Muller, a French explorer, who was killed in 1892 by hostile members of the Sakalava people.

Synonyms of Mullerornis modestus

Description

Restoration of a M. modestus pair roosting during the day. Mullerornis modestus pareja.jpg
Restoration of a M. modestus pair roosting during the day.

Mullerornis is smaller than the more well-known Aepyornis, [3] [4] with a still substantial body mass of approximately 80 kilograms (180 lb). [5] A bone possibly belonging to Mullerornis has been radiocarbon dated to about 1260 BP, [6] suggesting that the animal was still extant at the end of the first millennium. [7] Aepyornis modestus was shown by Hansford and Turvey (2018) to be a senior synonym of all nominal Mullerornis species described by Milne-Edwards and Grandidier (1894), resulting in the new combination Mullerornis modestus. [8]

Palaeobiology

Nocturnality

Like other elephant birds and its kiwi relatives, Mullerornis probably was nocturnal based on the small size of its optic lobes, though it shows less optical lobe reduction than these other taxa, implying slightly more crepuscular habits. [9]

Diet

Isotopic evidence suggests that Mullerornis was likely a browsing herbivore. [10]

Reproduction

The eggs of Mullerornis are substantially smaller than those of Aepyornis, weighting approximately 0.86 kilograms (1.9 lb), with a shell thickness of about 1.1 mm (364 in). [5]

Footnotes

  1. 1 2 Davies, S. J. J. F. (2003)
  2. Julian P. Hume; Michael Walters (2012). Extinct birds. T&AD Poyser. p. 544. ISBN   978-1408158616.
  3. Burney, et al. (1997), p. 763
  4. MacPhee, et al. (1985), table II
  5. 1 2 Grealy, Alicia; Miller, Gifford H.; Phillips, Matthew J.; Clarke, Simon J.; Fogel, Marilyn; Patalwala, Diana; Rigby, Paul; Hubbard, Alysia; Demarchi, Beatrice; Collins, Matthew; Mackie, Meaghan; Sakalauskaite, Jorune; Stiller, Josefin; Clarke, Julia A.; Legendre, Lucas J. (2023-02-28). "Molecular exploration of fossil eggshell uncovers hidden lineage of giant extinct bird". Nature Communications. 14 (1): 914. doi: 10.1038/s41467-023-36405-3 . ISSN   2041-1723.
  6. Burney, et al. (2004), p. 50
  7. Burney et al. (2004), p. 25
  8. Hansford, J. P.; Turvey, S. T. (2018-09-26). "Unexpected diversity within the extinct elephant birds (Aves: Aepyornithidae) and a new identity for the world's largest bird". Royal Society Open Science. 5 (9): 181295. doi:10.1098/rsos.181295.
  9. Christopher R. Torres & Julia A. Clarke. 2018. Nocturnal giants: evolution of the sensory ecology in elephant birds and other palaeognaths inferred from digital brain reconstructions. Proc. R. Soc. B 285 (1890); doi: 10.1098/rspb.2018.1540
  10. Hansford, James P.; Turvey, Samuel T. (April 2022). "Dietary isotopes of Madagascar's extinct megafauna reveal Holocene browsing and grazing guilds". Biology Letters. 18 (4): 20220094. doi:10.1098/rsbl.2022.0094. ISSN   1744-957X. PMC   9006009 . PMID   35414222.

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References