ArticleProceedings. Biological sciences2019
Olfactory receptor repertoire size in dinosaurs.
Article in Proceedings. Biological sciences, 2019. 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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Who cites it
8 citing papers in PubMed.
- Cranial anatomy, palaeoneurology, palaeobiology and stratigraphic age of the large-bodied ornithopod,PeerJ · 2026Article
- Decoding deception: the binding affinity of cuttlefish ink on shark smell receptors.G3 (Bethesda, Md.) · 2025Article
- Dinosaur palaeoneurology: an evolving science.Biology letters · 2024Review
- Neuroanatomy of the late Cretaceous Thescelosaurus neglectus (Neornithischia: Thescelosauridae) reveals novel ecological specialisations within Dinosauria.Scientific reports · 2023Article
- The endocranial anatomy of Buriolestes schultzi (Dinosauria: Saurischia) and the early evolution of brain tissues in sauropodomorph dinosaurs.Journal of anatomy · 2021Article
- Comparative growth in the olfactory system of the developing chick with considerations for evolutionary studies.Journal of anatomy · 2020Article
- Article
- Olfactory receptor repertoire size in dinosaurs.Proceedings. Biological sciences · 2019Article
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2 authors.
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Abstract
The olfactory bulb (OB) ratio is the size of the OB relative to the cerebral hemisphere, and is used to estimate the proportion of the forebrain devoted to smell. In birds, OB ratio correlates with the number of olfactory receptor (OR) genes and therefore has been used as a proxy for olfactory acuity. By coupling OB ratios with known OR gene repertoires in birds, we infer minimum repertoire sizes for extinct taxa, including non-avian dinosaurs, using phylogenetic modelling, ancestral state reconstruction and comparative genomics. We highlight a shift in the scaling of OB ratio to body size along the lineage leading to modern birds, demonstrating variable OR repertoires present in different dinosaur and crown-bird lineages, with varying factors potentially influencing sensory evolution in theropods. We investigate the ancestral sensory space available to extinct taxa, highlighting potential adaptations to ecological niches. Through combining morphological and genomic data, we show that, while genetic information for extinct taxa is forever lost, it is potentially feasible to investigate evolutionary trajectories in extinct genomes.
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