A definitive abelisaurid theropod dinosaur from the early Late Cretaceous of Patagonia

Lamanna, Matthew C.; Martı́nez, Rubén D.; Smith, Joshua B.

doi:10.1671/0272-4634(2002)022[0058:adatdf]2.0.co;2

Cited by 89 publications

(82 citation statements)

References 34 publications

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“…M N H 19S5 was referred to the subfamily Carnotaurinae by Lamanna et al (2002), because it shares a promaxillary fenestra obscured by the lamina iateralis of the ascending ramus. Additionally, these authors suggested that a n anteroposteriorly short lnaxillary body with parallel dorsal a n d ventral margins is synapomorphic of this subfamily.…”

Section: Indosuchus Raptorius This Taxon Was Materials and Methodsmentioning

confidence: 99%

Cretaceous theropods from India: A review of specimens described by Huene and Matley (1933)

Novas¹,

Agnolín²,

Bandyopadhyay³

2004

MACN

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Abstraot:The Lato Cretaceous (Maas~richtian) Lameta Ihrmation of central India has yielded dissociated elements ofavariety ofpredatory dinosaurs, most ofthem comingfrom aquarry named the e~Carnosaur bed. The materials were described hv Huene and Matlev nearly 70 years ago. They recomized nine iheronod species, which theysorted out into the theropod subgroups 4!arnosaiirian and eaCoelurasauria~~, I-iuene and Matley also described a considerable amount of theropod hindlimb bones (e.g., femora, tibiae, metat,arsals, and pedal phalanges) that they oilld not refer to any of these species, hut vaguely interpreted as corresponding to ~~allosaurid~~ or ,~coelurosaurid,~ theropods. We reviewed the available collection of Cretaceous therapods from Bara Simla housed at the Geological Survey of India. Kolkata. avrivlne to the foliowine conclusions: 1) Indosuchus and Indosaurus are abelisaurids, as --recognized by previous authors, hut avsilable information is not enough to judge whether they axi re synonyms; 2)Lmt~oisuchus indicus is a small abclisauroid, related to Noasaurus and Masiahasaurus on the basis or their peculiar cervical vortcbrae: 3: the coiitroversial taxa *Clorn~sosuc~ius-. ~iDruolosauroidesn, ,~Ornithornirnoides*. and also exhihit ahelisauroid characters. and bones of iaree size are tentatively referrod to as corresnondine to h~dosi~chus -or Indosai~~zs, whereas some pedal bones of smaller size may belong to i,aeoisuckus; 5) two kinds of abelisaurid feet arcapparent: ansin which the nhaianpes ofdieit 111 andIVarerobust, and another typein which the iiliaianze-es. .--~.of digit IV are transversely narrow and dorsoventrally deep. This reviow demonstrates that all of the theropod eloments discovered at the ,,Carnosaur bed,) belong to a single theropod clade, tho Abelisauroidev.

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Section: Indosuchus Raptorius This Taxon Was Materials and Methodsmentioning

confidence: 99%

Cretaceous theropods from India: A review of specimens described by Huene and Matley (1933)

Novas¹,

Agnolín²,

Bandyopadhyay³

2004

MACN

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“…REVISTA BRASILEIRA DE PALEONTOLOGIA,14(1) (Bonaparte & Gasparini, 1979), Albiano-Cenomaniano (Archangelsky et al, 1994), Cenomaniano medio-Turoniano tardío (Gradstein et al, 1995(Gradstein et al, , 1997Bridge et al, 2000) y Cenomaniano tardío-Turoniano temprano (Lamanna et al, 2002). Los estudios de la fauna dinosauriana y sus correlaciones con unidades equivalentes de la cuenca neuquina, sugieren que la edad de la Formación Bajo Barreal asignada por Gradstein et al (1995Gradstein et al ( , 1997, Bridge et al (2000) y Lamanna et al (2002) sería la que más se ajusta a estos vínculos faunísticos.…”

Section: Materials Y Métodosunclassified

“…Los estudios de la fauna dinosauriana y sus correlaciones con unidades equivalentes de la cuenca neuquina, sugieren que la edad de la Formación Bajo Barreal asignada por Gradstein et al (1995Gradstein et al ( , 1997, Bridge et al (2000) y Lamanna et al (2002) sería la que más se ajusta a estos vínculos faunísticos. Descripción.…”

Section: Materials Y Métodosunclassified

“…nov. es que se trata de niveles más modernos que los que han brindado los principales hallazgos de la Formación Bajo Barreal. La edad asignada, Cenomaniano tardío-Turoniano temprano para estos últimos niveles (Lamanna et al, 2002), se corresponde con los registros faunísticos de la parte superior del Miembro Inferior de la Formación Bajo Barreal.…”

Section: Discusión Y Consideraciones Finalesunclassified

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Drusilasaura deseadensis gen. et sp. nov., un nuevo titanosaurio (Dinosauria-Sauropoda), de la Formación Bajo Barreal, Cretácico Superior del norte de Santa Cruz, Argentina

Navarrete¹,

Casal²,

Martı́nez³

2011

Rev. bras. paleontol.

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“…provide ages between 91 and 95.8 Ma (Bridge et al, 2000), a range of ages corresponding to CenomanianTuronian. This unit has yielded remains of abelisaurid theropods (e.g., Xenotarsosaurus bonapartei and other abelisaurid remains; Martínez et al, 1986;Martínez et al, 1993;Lamanna et al, 2002;, and a large theropod with hypertrophied pedal ungual phalanges resembling Megaraptor namunhuaiquii (Martínez et al, 1999). Sauropods found in the same levels include remains of a diplodocimorph (Sciutto & Martínez, 1994), a nearly complete skull and partial cervical series of a yet unnamed basal titanosaurian (Martínez, 1998b(Martínez, , 1999, remains referred to the basal titanosaur Andesaurus sp.…”

Section: Institutional Abbreviations: Amnhmentioning

confidence: 99%

Aniksosaurus darwini gen. et sp. nov., a new coelurosaurian theropod from the Early Late Cretaceous of Central Patagonia, Argentina

Martı́nez¹,

Novas²

2006

MACN

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Abstract:The theropod dinosaur Aniksosaurus darwini gen. et sp. nov. has been recovered from the Upper Cretaceous, Bajo Barreal Formation, of Central Patagonia. Aniksosaurus darwini gen. et sp. nov. was a small tetanurine, approximately 2 meters long. Aniksosaurus exhibits several unique traits (e.g., cranial cervical vertebrae with dorsoventrally deep neural arches, provided with a pair of cavities at their cranial surfaces; neural canal wide; cranial caudals with ventral sagittal keel, and transverse processes triangular-shaped in dorsal view; manual ungual phalanges robust; ilium with extremely expanded brevis shelf; femur with deep notch for M. Iliotrochantericus; metatarsal and digit IV of pes transversely narrow). Available postcranial bones of Aniksosaurus exhibit derived features of Coelurosauria (e.g., ilium with well developed cuppedicus fossa; femur with anterior trochanter proximally projected, almost reaching the level of the articular head; greater trochanter craniocaudally expanded; femoral head rectangular-shaped in cranial aspect; and fibular shaft craniocaudally narrow), as well as characteristics suggesting that the new Patagonian taxon is more derived than some basal coelurosaurians such as compsognathids, Ornitholestes, and coelurids. Comparisons with maniraptoriforms (a clade including Ornithomimosauria, Tyrannosauridae, Oviraptorosauria, Alvarezsauridae and Paraves) support that Aniksosaurus is less derived than these theropods. In sum, Aniksosaurus is here considered as a Late Cretaceous survivor of a basal coelurosaurian radiation.

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A definitive abelisaurid theropod dinosaur from the early Late Cretaceous of Patagonia

Cited by 89 publications

References 34 publications

Cretaceous theropods from India: A review of specimens described by Huene and Matley (1933)

Cretaceous theropods from India: A review of specimens described by Huene and Matley (1933)

Drusilasaura deseadensis gen. et sp. nov., un nuevo titanosaurio (Dinosauria-Sauropoda), de la Formación Bajo Barreal, Cretácico Superior del norte de Santa Cruz, Argentina

Aniksosaurus darwini gen. et sp. nov., a new coelurosaurian theropod from the Early Late Cretaceous of Central Patagonia, Argentina

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