Genus
Valid Extinct

Hesperonyx

Rotatori et al. 2024

Hesperonyx is an extinct genus of dryomorphan ornithopod dinosaur from the Late Jurassic Lourinhã Formation of Portugal. The genus contains a single species, Hesperonyx martinhotomasorum, known from bones of the fore- and hindlimbs.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
1
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Hesperonyx
click to enlarge
Skeletal diagram of Hesperonyx martinhotomasorum showing known fossil material of the holotype specimen (ML 2700). Scale bar=1 m. Key  =Holotype (ML 2700)  =Unknown References "An unexpected early-diverging iguanodontian dinosaur (Ornithischia, Ornithopoda) from the Upper Jurassic of Portugal" "A new species of Camptosaurus (Ornithopoda: Dinosauria) from the Morrison Formation (Upper Jurassic) of Dinosaur National Monument, Utah, and a biomechanical analysis of its forelimb" Uteodon skeletal by Scott Hartman Camptosaurus dispar skeletal by Scott Hartman Paul, Gregory S. (2024) The Princeton Field Guide to Dinosaurs (3rd ed.), Princeton, N.J.: Princeton University Press ISBN: 9978-0-691-23157-0. © SlvrHwk · CC BY-SA 4.0 · Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
›
Ornithischia Unranked clade
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Neornithischia Unranked clade
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Pyrodontia Unranked clade
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Cerapoda Unranked clade
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Ornithopoda Suborder
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Iguanodontia Infraorder
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Euiguanodontia Unranked clade
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Dryomorpha Unranked clade
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Hesperonyx Genus
Fossil sites 1 geolocated sites
Distribution
Top countries
🇵🇹 Portugal
1
Geological formations
Lourinhã
1
Temporal distribution
Kimmeridgian (154.8–149.2 Ma)
1
Species (1)
Hesperonyx martinhotomasorum 152 Ma
Images 1
Bibliography
Original description
F. M. Rotatori, L. Ferrari, and C. Sequero, B. Camilo, O. Mateus, M. Moreno-Azanza. 2024. An unexpected early-diverging iguanodontian dinosaur (Ornithischia, Ornithopoda) from the Upper Jurassic of Portugal. Journal of Vertebrate Paleontology 43(4):e2310066:1-18 DOI ↗
Bibliography (1)
F. M. Rotatori, L. Ferrari, and C. Sequero, B. Camilo, O. Mateus, M. Moreno-Azanza. 2024. An unexpected early-diverging iguanodontian dinosaur (Ornithischia, Ornithopoda) from the Upper Jurassic of Portugal. Journal of Vertebrate Paleontology 43(4):e2310066:1-18 DOI ↗