New fossil evidence reveals the first fully marine amphibian, Gerrothorax maritimus, which dates to the Late Triassic period nearly 237 million years ago. (Ryosuke Motani/UC Davis via SWNS)
By Talker
Fossil evidence of the first fully marine amphibian that hunted in the seas 230 million years ago has been unearthed in China.
×
Javascript is required for you to be able to read premium content. Please enable it in your browser settings.
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm%96 Q49F?<JQ 8:2?E D2=2>2?56C\D:K65 @462? 3@EE@>\5H6==:?8 4C62EFC6 H2D 2=>@DE E9C66 766E =@?8 H:E9 2 5:D4\D92A65 3@5J 2?5 4@G6C65 :? 3@?J 2C>@C[ D4:6?E:DED D2J]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qmp?5[ F?=:<6 >@56C? 2>A9:3:2?D[ E96 362DE \ ?2>65 v6CC@E9@C2I >2C:E:>FD \ 4@F=5 E@=6C2E6 D2=E H2E6C]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm%96 C6D62C49[ AF3=:D965 :? E96 ;@FC?2= k2 9C67lQ9EEADi^^HHH]?2EFC6]4@>^?2E64@=6G@=^Q E2C86ElQ03=2?<Q C6=lQ?@C676CC6C ?@@A6?6CQm}2EFC6 t4@=@8J 2?5 tG@=FE:@?k^2m[ :D 32D65 @? E96 2?2=JD:D @7 EH@ ?62C=J 4@>A=6E6 D<6=6E@?D E92E 52E6 E@ E96 {2E6 %C:2DD:4 A6C:@5 ?62C=J abf >:==:@? J62CD 28@]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm%96 7@DD:=D H6C6 5:D4@G6C65 :? 2? 2C62 @7 r9:?2VD vF:K9@F !C@G:?46 E92E H2D @?46 4@G6C65 3J k2 9C67lQ9EEADi^^E2=<6C]?6HD^a_ae^_h^_h^362FEJ\566A\36?62E9\42AEFC65\3J\2>2K:?8\F?56CH2E6C\A9@E@8C2A9J^Qm@462?k^2m 2?5 =@42E65 9F?5C65D @7 >:=6D 7C@> =2C86 =2?5 >2DD6D]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm%96 C6D62C49 :?G@=G65 D4:6?E:DED 7C@> E96 k2 9C67lQ9EEADi^^HHH]F452G:D]65F^4FC:@D:EJ^?6HD^C6D62C496CD\F?62CE9\7@DD:=\6G:56?46\7:CDE\7F==J\>2C:?6\2>A9:3:2?Qm&?:G6CD:EJ @7 r2=:7@C?:2[ s2G:Dk^2m[ 2D H6== 2D !6<:?8 &?:G6CD:EJ 2?5 E96 v6@=@8:42= |FD6F> @7 vF:K9@F :? r9:?2]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm$EF5J 4@CC6DA@?5:?8 2FE9@C #J@DF<6 |@E2?: @7 &r s2G:D D2:5i Q%9:D 2C62 :D A2CE @7 2? 64@DJDE6> E92E H6VG6 366? =@@<:?8 2E 2?5 ECJ:?8 E@ C64@?DECF4E]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9QmQ(6VG6 366? >@DE=J DEF5J:?8 >2C:?6 C6AE:=6D 2?5 E96 7:D9 7C@> E9:D A=246[ 3FE ?@H H6 2=D@ 92G6 E9:D 2>A9:3:2? 2?5 :EVD 2 D@CE @7 G6CJ F?FDF2= >6>36C @7 E96 =:?6286]Qk^Am
An illustrated rendering of Gerrothoroax maritumus, informed by newly discovered fossil evidence of the creature, which is the first fully marine amphibian on record. (ChenGeng/GuizhouUniversity via SWNS)
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm~7 >@C6 E92? g[___ >@56C? 2>A9:3:2? DA64:6D[ ?@?6 92G6 366? <?@H? E@ =:G6 :? 7F==J >2C:?6 6?G:C@?>6?ED[ 2?5 =6DD E92? aT 6I9:3:E D@>6 568C66 @7 D2=E E@=6C2?46]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm|@E2?: D2:5 E92E :D @55 8:G6? E92E @E96C 7@FC\=:>365 2?:>2=D — :?4=F5:?8 >2>>2=D[ C6AE:=6D 2?5 3:C5D — 2== 92G6 DA64:6D 42A23=6 @7 DFCG:G:?8 H:E9@FE 7@@5 @C H2E6C 7C@> =2?5]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm}@ 6G:56?46 @7 2 7F==J >2C:?6 2>A9:3:2? 6I:DE65 :? E96 k2 9C67lQ9EEADi^^E2=<6C]?6HD^a_ae^_h^ab^42G6>6?\FD65\>2>>@E9\EFD<\A2EE6C?D\E@\4C62E6\F?:BF6\2?4:6?E\2CE^Qm7@DD:=k^2m C64@C5[ F?E:= ?@H]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9QmsF6 E@ E96 QAC:DE:?6Q ?2EFC6 @7 E96 D<6=6E@? DA64:>6?D[ E96 C6D62C49 E62> 4@F=5 C64@?DECF4E 9@H v6CC@E9@C2I >2C:E:>FD =@@<65 2?5 =:G65 :? :ED @462? 6?G:C@?>6?E]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm%96J D2J :E 925 2 Q7=2EE6?65Q 3@5J E92E H2D 4@G6C65 :? 3@?J 2C>@C[ 2 A@E6?E:2= 5676?D6 >6492?:D> 282:?DE AC652E@CD DF49 2D :49E9J@D2FCD]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm|@E2?: D2:5i Qx7 J@F E9:?< 23@FE E@52JVD 2>A9:3:2?D[ E9:D 2?:>2= :D F?FDF2= 3642FD6 :EVD 3:8]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9QmQxEVD AC@323=J[ 3@5J >2DD\H:D6[ 23@FE E96 D2>6 2D E96 8:2?E D2=2>2?56C[ 3FE H92EVD 5:776C6?E :D E92E 8:2?E D2=2>2?56CD 2C6 6=@?82E65 H96C62D E9:D 2?:>2= :D C62==J 49F?<J]Qk^Am
(Ryosuke Motani/UC Davis via SWNS)
By Talker
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qmq2D65 @? v6CC@E9@C2I >2C:E:>FDV 3@?J 2C>@C 2?5 E96 D92A6 @7 :ED D<F==[ E96 C6D62C496CD 36=:6G6 E92E :E H2D 2 3@EE@>\5H6==:?8 DF4E:@? 76656C]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm|@E2?: D2:5i Q%96J H@F=5 AC@323=J ;FDE H2:E 2E E96 3@EE@> 2?5 E96? H96? AC6J 4@>6D 2C@F?5[ E96J H@F=5 ;FDE DF4< :E :?]Qk^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qmw6 ?@E65 E96 7665:?8 DEJ=6 :D D:>:=2C E@ E96 H@3368@?8[ 2 >@56C?[ 3@EE@>\5H6==:?8 42CA6E D92C<]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9QmqFE E@52JVD 2>A9:3:2?D 2C6 F?23=6 E@ =:G6 :? >2C:?6 6?G:C@?>6?ED 5F6 E@ E96:C D2=E\:?E@=6C2?E D<:?]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm|@E2?: D2:5i Q%92E D<:? :D A6C>623=6[ 2?5 E92E 2==@HD E96 2?:>2=D E@ FD6 :E 7@C >F=E:A=6 AFCA@D6D]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9QmQ%96J FD6 :E 7@C C6DA:C2E:@? 2?5 H2E6C :?E2<6[ D@ 2>A9:3:2?D 5@?VE 5C:?< @C 3C62E96 E9C@F89 E96 >@FE9 3642FD6 E96J 42? 5@ 3@E9 E9C@F89 E96 D<:?]Qk^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qmw6 6IA=2:?65 E92E E96 7F?4E:@? @7 2>A9:3:2? 3:@=@8J C6BF:C6D E96> E@ =:G6 :? @C ?62C 7C6D9H2E6C 6?G:C@?>6?ED]k^Am
The animal had a flattened body that was covered in bony armor, a potential defense mechanism against predators like ichthyosaurs. (Ryosuke Motani/UC Davis via SWNS)
By Talker
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm(9:=6 D@>6 >@56C? DA64:6D DF49 2D E96 4C23\62E:?8 7C@8 D9@H 568C66D @7 D2=E E@=6C2?46[ E96J =@D6 H6:89E :? 3C24<:D9 H2E6CD 2?5 ?665 E@ C64@G6C :? 7C6D9H2E6CD]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm%96 C6D62C496CD 36=:6G6 E92E v6CC@E9@C2I >2C:E:>FD 4:C4F>G6?E65 E92E =:>:E2E:@? E92?<D E@ :ED 3@?J 2C>@C 2?5 >@C6 7:D9\=:<6 3:@=@8J]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm%96J D2J E96 2C>@C H@F=5 92G6 AC6G6?E65 H2E6C 23D@CAE:@? E9C@F89 :ED D<:?[ C6BF:C:?8 E96 2>A9:3:2? E@ 5C:?< D2=E H2E6C H:E9 :ED >@FE9[ H9:49 :E H@F=5 23D@C3 E9C@F89 :ED 5:86DE:G6 EC24E]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm%96 4C62EFC6VD 8:==D[ H9:49 2C6 AC6D6?E :? E96 v6CC@E9@C2I 86?FD[ H@F=5 92G6 2==@H65 :E E@ 7:=E6C @FE E96 D2=E]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9QmpD H6== 2D E96 7@DD:=D 36:?8 7@F?5 :? 566A D62 D65:>6?ED[ |@E2?: D2:5 E96 724E E92E E96 DA64:>6?D H6C6 ?62C=J 4@>A=6E6 D<6=6E@?D =65 E96 C6D62C49 E62> E@ 36=:6G6 v6CC@E9@C2I >2C:E:>FD H2D @462?\5H6==:?8]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qmw6 25565i Qr2C42DD6D 2E D62[ F?=6DD E96J D:?< E@ E96 3@EE@> C:89E 2H2J[ E6?5 E@ 5CJ @FE 2?5 =@D6 =:>3D AC:@C E@ D:?<:?8 E@ E96 3@EE@>]k^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9QmQqFE E96D6 2?:>2=D 925 E96:C 7:?86CD AC6D6CG65[ D@ E92E >62?D E96J AC@323=J 5:65 ?62C H96C6 E96J =:G65]Qk^Am
kA 4=2DDlQHA\3=@4<\A2C28C2A9Qm%96 C6D62C49 E62> 2=D@ 4@?5F4E65 86@496>:42= 2?2=JD:D @7 E96 7@DD:=D[ H9:49 C6G62=65 E92E E96 AC@A@CE:@? @7 DEC@?E:F> :D@E@A6D :? E96> 4=@D6=J C6D6>3=65 E9@D6 E92E H@F=5 36 D66? :? E96 @462?D @7 E96 {2E6 %C:2DD:4 A6C:@5]k^Am