ArticlePloS one2018
Anatomy and systematics of the sauropodomorph Sarahsaurus aurifontanalis from the Early Jurassic Kayenta Formation.
Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed.
- Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea.Anatomical record (Hoboken, N.J. : 2007) · 2026Article
- New information on Late Triassic sauropodomorph dinosaurs provides support for the independent acquisition of postcranial skeletal pneumaticity in avemetatarsalian lineages.Journal of anatomy · 2026Article
- Review of the tetrapod skull-neck boundary: implications for the evolution of the atlas-axis complex.Biological reviews of the Cambridge Philosophical Society · 2025Review
- A new Early Jurassic dinosaur represents the earliest-diverging and oldest sauropodomorph of East Asia.Scientific reports · 2025Article
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- Craniomandibular osteology of a new massopodan sauropodomorph (Dinosauria: Sauropodomorpha) from the Late Triassic (latest Norian) of Canton Aargau, Switzerland.Swiss journal of palaeontology · 2025Article
- Article
- Osteohistology reveals the smallest adult Jurassic sauropodomorph.Royal Society open science · 2023Article
- Walking with early dinosaurs: appendicular myology of the Late Triassic sauropodomorphRoyal Society open science · 2022Article
- The anatomy and palaeobiology of the early armoured dinosaurRoyal Society open science · 2021Article
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- The evolution and role of the hyposphene-hypantrum articulation in Archosauria: phylogeny, size and/or mechanics?Royal Society open science · 2019Article
- Article
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Abstract
Sarahsaurus aurifontanalis, from the Kayenta Formation of Arizona, is one of only three sauropodomorph dinosaurs known from the Early Jurassic of North America. It joins Anchisaurus polyzelus, from the older Portland Formation of the Hartford Basin, and Seitaad reussi, from the younger Navajo Sandstone of Utah, in representing the oldest North American sauropodomorphs. If it is true that sauropodomorphs were absent from North America during the Late Triassic, the relationship among these three dinosaurs offers a test of the mechanisms that drove recovery in North American biodiversity following the end-Triassic extinction event. Here we provide the first thorough description of Sarahsaurus aurifontanalis based on completed preparation and computed tomographic imaging of the holotype and referred specimens. With new anatomical data, our phylogenetic analysis supports the conclusion that Sarahsaurus aurifontanalis is nested within the primarily Gondwanan clade Massospondylidae, while agreeing with previous analyses that the three North American sauropodomorphs do not themselves form an exclusive clade. A revised diagnosis and more thorough understanding of the anatomy of Sarahsaurus aurifontanalis support the view that independent dispersal events were at least partly responsible for the recovery in North American vertebrate diversity following a major extinction event.
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