Trematosauroidea
Trematosauroidea are an important group of Triassic temnospondyl amphibians. They flourished briefly during the Early Triassic, occurring worldwide before declining at the start of the Middle Triassic, although the group continued until the Late Triassic. They were medium-sized temnospondyls with wedge-shaped tails, narrow skulls, and, in advanced forms, elongated snouts. The latter feature was probably an adaptation for feeding on fish. The largest and most specialized family, the Trematosauridae, are the only batrachomorphs to have adapted to a marine lifestyle with the exception of the modern crab-eating frog.

A temnospondyl ilium was described in 2004 from the Callovian Toutunhe Formation in the Junggar Basin of China. Although the isolated bone was impossible to identify on the species level, it was referred to Trematosauroidea. The presence of this bone in the Toutunhe Formation extends the range of trematosauroids into the Middle Jurassic, making it one of only three groups of temnospondyls that survived the Triassic-Jurassic extinction event (the other two being the Brachyopoidea and possibly the Capitosauria).
Q47158
Triassic
LOC
Q131447
temnospondyl
Concept
Q1075885
Early Triassic
TIME
Q929395
Middle Triassic
MEDIA
Q917293
Late Triassic
TIME
Q2342478
Trematosauridae
Concept
Q2521462
batrachomorphs
Concept
Q9430
marine
Concept
Q2275335
crab-eating frog
Concept
Q728889
ilium
Concept
Q764255
Callovian
TIME
Q17037320
Toutunhe Formation
LOC
Q1156656
Junggar Basin
LOC
Q148
China
LOC
Q500054
Middle Jurassic
MEDIA
Q835034
Triassic-Jurassic extinction event
Concept
Q2733836
Brachyopoidea
Concept
Q5035979
Capitosauria
MISC
Q3825003
Trematosauroidea
MISC
Q3825003
Trematosauroidea
MISC
2004-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2004
DATE
follows
follows
country
country