ArticleNational science review2024
Exceptional Early Jurassic fossils with leathery eggs shed light on dinosaur reproductive biology.
Article in National science review, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed.
- A detailed redescription of a skeletally immature 'Redondasaurus' suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution.Anatomical record (Hoboken, N.J. : 2007) · 2026Article
- A new Early Jurassic dinosaur represents the earliest-diverging and oldest sauropodomorph of East Asia.Scientific reports · 2025Article
- Biogenic origin of secondary eggshell units in dinosaur eggshells elucidates lost biomineralization process in maniraptoran dinosaurs.Science advances · 2025Article
- Growing with dinosaurs: a review of dinosaur reproduction and ontogeny.Biology letters · 2025Review
- 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
- Advancing plant biology through deep learning-powered natural language processing.Plant cell reports · 2024Review
- Rethinking the egg.National science review · 2024Article
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Authors and funding
13 authors.
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Abstract
Our understanding of pre-Cretaceous dinosaur reproduction is hindered by a scarcity of evidence within fossil records. Here we report three adult skeletons and five clutches of embryo-containing eggs of a new sauropodomorph from the Lower Jurassic of southwestern China, displaying several significant reproductive features that are either unknown or unlike other early-diverging sauropodomorphs, such as relatively large eggs with a relatively thick calcareous shell formed by prominent mammillary cones, synchronous hatching and a transitional prehatching posture between the crocodilians and living birds. Most significantly, these Early Jurassic fossils provide strong evidence for the earliest known leathery eggs. Our comprehensive quantitative analyses demonstrate that the first dinosaur eggs were probably leathery, elliptical and relatively small, but with relatively long eggshell units, and that along the line to living birds, the most significant change in reptilian egg morphology occurred early in theropod evolution rather than near the origin of Aves.
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