Tenontosaurus fossils from Lower Cretaceous of West Texas (free pdf)

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Ben Creisler

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Nov 12, 2025, 5:53:37 PMNov 12
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Spencer G. Lucas, Jason W. Ricketts and Sebastian G. Dalman (2025)
An ornithopod dinosaur from the Lower Cretaceous of West Texas
In: Lucas et al., 2025, Fossil Record 11. New Mexico Museum of Natural History and Science Bulletin 101: 291-294
https://www.researchgate.net/publication/396540214_AN_ORNITHOPOD_DINOSAUR_FROM_THE_LOWER_CRETACEOUS_OF_WEST_TEXAS


We document fossil bones (caudal vertebrae, femur) of a tenontosaur (cf. Tenontosaurus sp.) from the Aptian/Albian Yucca Formation in far West Texas. This southernmost record of a tenontosaur in the Western Interior is about 400 km east of Arizona records and about 900 km southwest of its records in north-central Texas. The Yucca Formation record confirms the Aptian/Albian boundary age data that constrain other Tenontosaurus records. The West Texas Tenontosaurus thus adds to the distribution of one of the dominant dinosaurian herbivores of the Aptian-Albian in the Western Interior.

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