Genus
Valid Extinct

Plesiolophus

McFeeters et al. 2026

Plesiolophus is an extinct genus of lambeosaurine hadrosaurid dinosaur known from the Late Cretaceous Oldman Formation of Canada. The genus contains a single species, Plesiolophus warnerensis, known from a partial skull. It belongs to the clade Parasaurolophini, where it exhibits more primitive cranial characters than its relatives.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
1
Group
Dinosaures
Herbivore Ground dwelling, gregarious Terrestrial
Plesiolophus
click to enlarge
Hypothetical Plesiolophus skull reconstruction with known elements in white. Missing elements in grey. Scale bar 20 cm. © Olof Moleman · CC BY-SA 4.0 · Wikimedia
Plesiolophus
Plesiolophus
Plesiolophus
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
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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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Ankylopollexia Unranked clade
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Styracosterna Unranked clade
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Hadrosauriformes Unranked clade
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Hadrosauroidea Unranked clade
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Hadrosauridae Family
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Lambeosaurinae Subfamily
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Parasaurolophini Tribe
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Plesiolophus Genus
Fossil sites 1 geolocated sites
Distribution
Top countries
🇨🇦 Canada
1
Geological formations
Oldman
1
Temporal distribution
Campanian (83.6–72.2 Ma)
1
Species (1)
Plesiolophus warnerensis 84 Ma
News 1
A New Lambeosaurine Dinosaur from Alberta
Canardia Dinosauria Parasaurolophus Plesiolophus discovery +1
A new species of duck-billed dinosaur has been named.  It is a lambeosaurine and it has been named Plesiolophus warnerensis.  The researchers, writing in the "Canadian Journal of Earth Sciences", conclude that at present it cannot be excluded as a potential ancestor to the iconic Parasaurolophus. The discovery of Plesiolophus warnerensis is helping palaeontologists to
01/08/2026 everythingdinosaur
Images 2
Bibliography
Original description
B. D. McFeeters, D. C. Evans, and M. J. Ryan, H. C. Maddin. 2026. A new parasaurolophin dinosaur (Hadrosauridae: Lambeosaurinae) from the Oldman Formation of southern Alberta. Canadian Journal of Earth Sciences 63:1-23 DOI ↗
Bibliography (1)
B. D. McFeeters, D. C. Evans, and M. J. Ryan, H. C. Maddin. 2026. A new parasaurolophin dinosaur (Hadrosauridae: Lambeosaurinae) from the Oldman Formation of southern Alberta. Canadian Journal of Earth Sciences 63:1-23 DOI ↗