Qilinyu
Qilinyu rostrata is a "maxillate" placoderm from the late Ludlow epoch of Qujing, Yunnan, 419 million years ago.[1]
Qilinyu Temporal range: Late Ludlow | |
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Artist's restoration | |
Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | †Placodermi |
Order: | †incertae sedis |
Genus: | †Qilinyu Zhu et al., 2016 |
Species: | †Q. rostrata |
Binomial name | |
†Qilinyu rostrata Zhu et al., 2016 | |
Specimens and taxonomy
The holotype and paratype of Q. rostrata are two exquisitely preserved specimens both featuring a domed cranium and a curved rostrum presenting a "dolphin-like profile."[1]
The researchers' cladistic diagram shows Q. rostrata as the sister taxon of Entelognathus, Janusiscus and the crown gnathostomes (i.e., bony and cartilaginous fishes and their descendants).[1]
Gnathostomata |
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Evolutionary significance
Qilinyu rostrata, together with Entelognathus, demonstrates additional evidence that modern gnathostomes evolved from placoderms.[1][2]
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gollark: Is your tortl running Ħeavdrone™ software?
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gollark: Go `HTTP/1.0 404 Not Found` yourself.
gollark: There's some autogenerated/binding code, but someone else does that.
References
External links
- - Qilinyu rostrata: Silurian Fish from China Sheds Light on Jaw Evolution
- - Shocking Discovery: Human Jaws Could be Traced Back to Ancient Armored Fish
- - Fish fossil upends scientists’ view of jaw evolution
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