Mesembriornis milneedwardsi Moreno, 1889

Alvarenga, Herculano M. F. & Höfling, Elizabeth, 2003, Systematic Revision Of The Phorusrhacidae (Aves: Ralliformes), Papéis Avulsos de Zoologia 43 (4), pp. 55-91 : 86

publication ID

https://doi.org/ 10.1590/S0031-10492003000400001

persistent identifier

https://treatment.plazi.org/id/03D18A23-C85D-1841-591B-2A2C9453F8BC

treatment provided by

Carolina

scientific name

Mesembriornis milneedwardsi Moreno, 1889
status

 

Mesembriornis milneedwardsi Moreno, 1889

revalid.name

Mesembriornis milneedwardsi Moreno, 1889:29 ; Moreno & Mercerat, 1891; Brodkorb, 1967 (syn. of Prophororhacos australis ).

Hypodigm – Type; distal half of the left tarsometatarsus, lacking the external trochlea (MLP-87- type of Paleociconia australis Moreno, 1889 ); an almost complete skeleton, lacking especially the skull (MACN-5944); almost complete skeleton, including the skull and mandible, besides the left and incomplete humerus, radius and ulna, the femurs, and the right tibiotarsus and tarsometatarsus ( MMP-S155 ); distal fragment of the right femur (MLP-170) .

Horizon and Locality – The Middle and Upper Pliocene of Argentina (Montehermosan), Province of Buenos Aires; the Monte Hermoso and Chapadmalal Formations; Monte Hermoso, Rio Loberia.

Measurements – Table 9, Rovereto (1914), Kraglievich (1946) and Patterson & Kraglievich (1960).

Illustrations – Rovereto (1914) and Kraglievich (1932: PL. LVIII and 1946).

Remarks – Only a slighter larger size of specimen MMP-S155 does not justify the Kraglievich’s (1946) specific separation of Hermosiornis rapax . Patterson & Kraglievich (1960:19) commented that specimens MACN-5944 and MLP-140-142 may belong to the same individual, which seems to be very probable. The skull of specimen MMP-S155 ( Fig. 26D View FIGURE 26 ) is the only known one of Mesembriornithinae and even though pictured in Kraglievich’s (1946), without comments, it is on some parts reconstructed; the rostral extremity, as well as the nostril region, are reconstructions; the height of the upper maxilla, in the middle part, is well defined but the length seems to be slightly increased in the reconstruction, mainly when considering the conserved mandible; the appearance of this skull seems to be more similar to that of Psilopterus bachmanni ( Fig. 26I View FIGURE 26 ) than that represented in Kraglievich’s (1946:109) restoration. (Julia Clark, pers. inf., 1999).

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Gruiformes

Family

Phorusrhacidae

Genus

Mesembriornis

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