Edited by oilshale
Report Fossil
Images: |
By oilshale (edited)
Coelacanth
Kingdom: Animalia
Eon: Phanerozoic
Era: Mesozoic
Period: Triassic
Sub Period: None
Epoch: Middle
International Age: Anisian
Guanling Formation
Acquired by: Purchase/Trade
Length: 20 cm
Daaozi, Luoxiong
Luoping County
Yunnan
China
Taxonomy from Fossilworks.com.
Diagnosis from Wen et al. 2013, p. 178: "Middle−sized coelacanth. Three diagnostic features are the expanded lachrymojugal, the notched dentary, the large semicircular coronoid, Skull roof has two pairs of parietals. Posterior margin of postparietals embayed. Lachrymojugal has an expanded posterior portion and a concave posteroventral margin. Squamosal has a slightly anterior expansion. Ventral surface of parasphenoid is covered by numerous granular teeth. Dentary has a deeply notched posterior border, and teeth distributed on the separated dentary plate. The first dorsal fin contains 12 robust segmented rays. The lower lobe of the caudal fin is larger than the upper lobe. The following combination of characters, a notched dentary and an expanded lachrymojugal, is not known in any other actinistian, so the Luoping materials must represent a new taxon."
Line drawing from Wen et al., p. 183:
Identified by oilshale.
References:
Edited by oilshale
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now