MANUAL DA FOSSA MICA ROCHA PDF

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Manual Da Fossa Mica Rocha Pdf

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However, intrageneric relationships of the iconic, multi-species genera Apatosaurus and Diplodocus are still poorly known.

The way to resolve this issue is a specimen-based phylogenetic analysis, which has been previously implemented for Apatosaurus, but is here performed for the first time for the entire clade of Diplodocidae. The analysis includes 81 operational taxonomic units, 49 of which belong to Diplodocidae.

Resumo do Livro em PDF

The set of OTUs includes all name-bearing type specimens previously proposed to belong to Diplodocidae, alongside a set of relatively complete referred specimens, which increase the amount of anatomically overlapping material. Non-diplodocid outgroups were selected to test the affinities of potential diplodocid specimens that have subsequently been suggested to belong outside the clade.

The specimens were scored for morphological characters, representing one of the most extensive phylogenetic analyses of sauropod dinosaurs.

Character states were figured and tables given in the case of numerical characters. The resulting cladogram recovers the classical arrangement of diplodocid relationships.

Detalhes do livro

Two numerical approaches were used to increase reproducibility in our taxonomic delimitation of species and genera. This resulted in the proposal that some species previously included in well-known genera like Apatosaurus and Diplodocus are generically distinct.

Of particular note is that the famous genus Brontosaurus is considered valid by our quantitative approach. Our use of a specimen-, rather than species-based approach increases knowledge of intraspecific and intrageneric variation in diplodocids, and the study demonstrates how specimen-based phylogenetic analysis is a valuable tool in sauropod taxonomy, and potentially in paleontology and taxonomy as a whole.

Introduction Overview of diplodocid sauropods The dinosaur clade Diplodocidae includes some of the most iconic sauropods.

With their greatly elongated necks and tails, diplodocids constitute one of the typical popular images of sauropods. The specimens were scored for morphological characters, representing one of the most extensive phylogenetic analyses of sauropod dinosaurs. Character states were figured and tables given in the case of numerical characters.

The resulting cladogram recovers the classical arrangement of diplodocid relationships. Two numerical approaches were used to increase reproducibility in our taxonomic delimitation of species and genera.

This resulted in the proposal that some species previously included in well-known genera like Apatosaurus and Diplodocus are generically distinct. Of particular note is that the famous genus Brontosaurus is considered valid by our quantitative approach.

Our use of a specimen-, rather than species-based approach increases knowledge of intraspecific and intrageneric variation in diplodocids, and the study demonstrates how specimen-based phylogenetic analysis is a valuable tool in sauropod taxonomy, and potentially in paleontology and taxonomy as a whole.

Introduction Overview of diplodocid sauropods The dinosaur clade Diplodocidae includes some of the most iconic sauropods. With their greatly elongated necks and tails, diplodocids constitute one of the typical popular images of sauropods.

The clade includes the well-known genera Apatosaurus Marsh, a , Diplodocus Marsh, , and Barosaurus Marsh, In recent phylogenetic trees, Diplodocidae consistently forms the sister group to the clade Dicraeosauridae, with which they form Flagellicaudata. Flagellicaudata in turn is included with Rebbachisauridae in Diplodocoidea e.

Although new taxa continue to be discovered Table 1 , the vast majority of diplodocid species were described in the late s and early s. Species identification is furthermore hampered by the fact that many holotype specimens are incomplete and fragmentary e.Given that most sites in the Upper Jurassic Morrison Formation are multi-taxon assemblages, and that the Morrison Formation has yielded about three-quarters of the diplodocid genera reported so far, it is possible that at least some holotype specimens include material from multiple species.

The way to resolve this issue is a specimen-based phylogenetic analysis, which has been previously implemented for Apatosaurus, but is here performed for the first time for the entire clade of Diplodocidae.

In recent phylogenetic trees, Diplodocidae consistently forms the sister group to the clade Dicraeosauridae, with which they form Flagellicaudata. Several species were described in the late s or early s from the Morrison Formation of North America.

In recent phylogenetic trees, Diplodocidae consistently forms the sister group to the clade Dicraeosauridae, with which they form Flagellicaudata.