A NEW DRYOSAURID ORNITHOPOD (DINOSAURIA, ORNITHISCHIA) FROM THE LATE JURASSIC OF PORTUGAL

被引：35

作者：

Escaso, Fernando ^{[1
,2
]}

Ortega, Francisco ^{[1
,2
]}

Dantas, Pedro ^{[2
,3
]}

Malafaia, Elisabete ^{[2
,4
]}

Silva, Bruno ^{[2
]}

Gasulla, Jose M. ^{[5
]}

Mocho, Pedro ^{[2
,5
]}

Narvaez, Ivan ^{[1
]}

Sanz, Jose L. ^{[5
]}

机构：

[1] Univ Nacl Educ Distancia, Grp Biol Evolut, Dept Fis Matemat & Fluidos, E-28040 Madrid, Spain

[2] Soc Hist Nat Torres Vedras, Lab Paleontol & Paleoecol, P-2564909 Torres Vedras, Portugal

[3] Museu Nacl Hist Nat & Ciencia, P-1250102 Lisbon, Portugal

[4] Univ Lisbon, Fac Ciencias, Ctr Geol, P-1749016 Lisbon, Portugal

[5] Univ Autonoma Madrid, Dept Biol, Unidad Paleontol, E-28049 Madrid, Spain

来源：

JOURNAL OF VERTEBRATE PALEONTOLOGY | 2014年 / 34卷 / 05期

关键词：

PHYLOGENY; ARGENTINA;

D O I：

10.1080/02724634.2014.849715

中图分类号：

Q91 [古生物学];

学科分类号：

0709 ; 070903 ;

摘要：

A new dryosaurid ornithopod, Eousdryosaurus nanohallucis, gen. et sp. nov., is described here based on a single specimen from the Late Jurassic Alcobaca Formation of Portugal. Eousdryosaurus nanohallucis is distinguished from all other dryosaurids by eight autapomorphic features and an unique combination of characters, some of which are also shared by other dryosaurids. Eousdryosaurus is linked with Dryosauridae, because the fourth trochanter is proximally placed and widely separated from the scar for the insertion of the M. caudifemoralis longus, which is restricted to the medial surface of the femoral shaft. Phylogenetic analysis nests Eousdryosaurus in an unresolved polytomy at the base of Dryosauridae together with Callovosaurus, Dryosaurus, and Kangnasaurus. The complete pes of Eousdryosaurus, which has a phalangeal formula of 1-3-4-5-0, supports the putative autapomorphic reduction of the dryosaurid pes that also occurs in parallel in more derived ornithopods.SUPPLEMENTAL DATASupplemental materials are available for this article for free at www.tandfonline.com/UJVP

引用

页码：1102 / 1112

页数：11

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