期刊
CURRENT BIOLOGY
卷 31, 期 15, 页码 3303-+出版社
CELL PRESS
DOI: 10.1016/j.cub.2021.05.040
关键词
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资金
- National Science Foundation [DEB 1657656, DBI 1701714]
- Biological Sciences Department at Sam Houston State University - Newton International Fellowship [NF170464]
- (Royal Society) , a Juan de la Cierva Incorporacion Fellowship [IJC2018037685I]
- (Ministerio de Ciencia e Innovacion of the Spanish Government)
- CERCA programme - Scientific Grant Agency of the Ministry of Education of Slovak Republic
- Slovak Academy of Sciences [1/0191/21]
- Peretti Foundation
Oculudentavis, originally thought to be the smallest avian dinosaur, was proven to be a bizarre lizard of uncertain position. The new interpretation and phylogenetic placement highlight a rare case of convergent evolution in skull proportions, but apparently not in morphological characters.
Oculudentavis khaungraae was described based on a tiny skull trapped in amber. The slender tapering rostrum with retracted narial openings, large eyes, and short vaulted braincase led to its identification as the smallest avian dinosaur on record, comparable to the smallest living hummingbirds. Despite its bird-like appearance, Oculudentavis showed several features inconsistent with its original phylogenetic placement. Here, we describe a more complete specimen that demonstrates Oculudentavis is actually a bizarre lizard of uncertain position. The new specimen is described as a new species within the genus Oculudentavis. The new interpretation and phylogenetic placement highlight a rare case of convergent evolution in skull proportions but apparently not in morphological characters. Our results re-affirm the importance of Myanmar amber in yielding unusual taxa from a forest ecosystem rarely represented in the fossil record.
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