A NEW SPECIES OF RHEA (AVES: RHEIDAE) FROM THE LATE MIOCENE OF THE MESOPOTAMIA IN ARGENTINA

被引：13

作者：

Agnolin, Federico L. ^{[1
,2
]}

Noriega, Jorge I. ^{[3
]}

机构：

[1] Museo Argentino Ciencias Nat Bernardino Rivadavia, Lab Anat Comparada & Evoluc Vertebrados, RA-1405 Buenos Aires, DF, Argentina

[2] Univ Maimonides, CEBBAD, Dept Ciencias Nat & Antropol, Area Paleontol Fdn Hist Nat Felix de Azara, Buenos Aires, DF, Argentina

[3] CICYTTP CONICET, Lab Paleontol Vertebrados, RA-3105 Diamante, Entre Rios, Argentina

来源：

AMEGHINIANA | 2012年 / 49卷 / 02期

关键词：

Rheidae; Pterocnemia; Late Miocene; Mesopotamia; Argentina;

D O I：

10.5710/AMGH.v49i2(492)

中图分类号：

Q91 [古生物学];

学科分类号：

0709 ; 070903 ;

摘要：

A NEW SPECIES OF RHEA (AVES: RHEIDAE) FROM THE LATE MIOCENE OF THE MESOPOTAMIA IN ARGENTINA. A new species of rhea, Pterocnemia mesopotamica sp. nov. (Ayes: Rheidae), from the late Miocene of Mesopotamia in Argentina is described. Specimens come from the base of the Ituzaingo Formation (= "Conglomerado osifero" or "Mesopotamiense"), which crops out along the cliffs of the Parana river near the homonimous city in Entre Rios Province. Pterocnemia mesopotamica sp. nov. is a slender and small-bodied bird, similar in size to the lesser rhea or choique (P. pennata), and characterized by the marked divergence of the tarsometatarsal trochleae. Fragmentary remains of a femur and a humerus, identified as Rheidae indet., are also reported from the same locality and horizon. An isolated tarsometatarsus, coming from the Aisol Formation in Mendoza Province, is referred to Pterocnemia cf. P mesopotamica sp. nov. If this record is confirmed, the biochron of the new taxon would extend back from the late Miocene (Huayquerian Age) to the middle Miocene (Friasian Age).

引用

页码：236 / 246

页数：11

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