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Avaceratops was a relatively small ceratopsian dinosaur from the late Cretaceous of North America.‭ ‬What makes its classification difficult however is the fact that its neck frill is short and lacks any fenestrae‭ (‬openings‭)‬,‭ ‬and with the exception of others like Triceratops,‭ ‬ceratopsians can usually be divided into either centrosaurine or chasmosaurine groups,‭ ‬although both have fenestral openings in their frills.‭ ‬This had led to Avaceratops‭ ‬being placed between these two larger groups with speculation that it may represent the ancestral form of Triceratops as well as possibly being a juvenile specimen which could account for its small body size and relatively small horns and frill. The name Avaceratops is derived from Ava Cole,‭ ‬the wife of Eddie Cole who found the first fossil remains in‭ ‬1981.‭ ‬The species name A.‭ ‬lammersi is in honour of the Lammers family who owned the land the fossils were found on.‭ ‬The fossil remains were found in what would have been a stream bed in the Cretaceous,‭ ‬and it‭’‬s thought that this dinosaur was washed there where the running water scattered the bones as it decayed.

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