Английская Википедия:Hesperonyx

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Шаблон:Distinguish Шаблон:Short description Шаблон:Speciesbox Hesperonyx (meaning "western claw") 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.

Discovery and naming

The Hesperonyx holotype specimen, ML 2700, was discovered in 2021 in sediments of the Lourinhã Formation (Porto Novo Member) along the beach at Porto Dinheiro. The specimen consists of consists of bones from the left forelimb (a hand claw, ulnare, and partial metacarpal) and hindlimb (the tibia, fibula, most of metatarsals I–IV, remains of five phalanges, and three toe claws).[1][2]

In 2024, Rotatori et al. described Hesperonyx martinhotomasorum as a new genus and species of ornithopod dinosaurs based on these fossil remains. The generic name, "Hesperonyx", combines "Hesperus" (or the "Evening Star"), after the Greek god whose name also references the western direction—referencing the holotype locality in the west region of Portugal—with the Greek suffix "-onyx", meaning "claw". The specific name, "martinhotomasorum", combines the last names of Micael Martinho and Carla Alexandra Tomás, honoring their efforts in fossil curation and preparation at the Museu da Lourinhã.[1]

Description

Hesperonyx is estimated as being Шаблон:Convert long.[1]

Classification

Hesperonyx was subjected to two phylogenetic analyses and found to be an indeterminate member of Dryomorpha. More precise affinities could be not concluded due to the paucity of remains.[1]

Paleoenvironment

The Lourinhã Formation is one of the major fossiliferous formations of Portugal, preserving many species of dinosaurs, some of which are also known from the contemporaneous Morrison Formation of North America.[3][4][5][6] Hesperonyx is the third named iguanodontian known from this formation, after Draconyx and Eousdryosaurus.[1]

References

Шаблон:Reflist

Шаблон:Ornithopoda Шаблон:Taxonbar


Шаблон:Ornithopod-stub