kehidupan laut cepat pulih setelah kepunahan massal global
Reptil menyerbu lautan yang pulih
Date:
June 13, 2016
Source:
University of California - Davis
Summary:
Reptil cepat menginvasi laut segera setelah kepunahan menyapu bersih sebagian besar kehidupan di Bumi , menurut sebuah studi baru . Fosil Reptil laut tertua muncul 248.810.000 tahun yang lalu , tanggal yang paling tepat namun , menurut penelitian ini . Reptil laut perintis , termasuk ichthyosaurus yang seperti-lumba dan sauropterygians , melanjutkan untuk menguasai laut Mesozoikum selama era dinosaurus .
................................
Reptil cepat menginvasi laut segera setelah kepunahan menyapu bersih sebagian besar kehidupan di Bumi , menurut sebuah studi baru yang dipimpin oleh University of California , Davis , peneliti .
erubahan iklim global - mungkin dipicu oleh letusan gunung berapi besar - membunuh lebih dari 95 persen dari semua spesies sekitar 250 juta tahun yang lalu , pada akhir periode Permian . reptil tanah menjajah laut hanya 3,35 juta tahun pada awal Trias , cepat pulih dalam waktu geologi , dimana para peneliti melaporkan dalam jurnal Scientific Reports .
............................
SILAHKAN MENGGUNAKAN
" MESIN TRANSLATE "..GOOGLE TRANSLATE
DISAMPING KANAN INI.............
PLEASE USE ........ "TRANSLATE MACHINE" .. GOOGLE TRANSLATE BESIDE RIGHT THIS
.................
........................................
........................................
........................................
........................................
T-REC -TUGUMUDA REPTILES COMMUNITY-INDONESIA
More info :
www.trecsemarang2011.blogspot.com
minat gabung : ( menerima keanggotaan seluruh kota dan daerah di Indonesia )
08995557626
DISAMPING KANAN INI.............
PLEASE USE ........ "TRANSLATE MACHINE" .. GOOGLE TRANSLATE BESIDE RIGHT THIS
.................
........................................
........................................
........................................
........................................
T-REC -TUGUMUDA REPTILES COMMUNITY-INDONESIA
More info :
www.trecsemarang2011.blogspot.com
minat gabung : ( menerima keanggotaan seluruh kota dan daerah di Indonesia )
08995557626
FAST RESPON :
08995557626/764047D2
FAST RESPON :
08995557626/764047D2
FAST RESPON :
08995557626/764047D2
FAST RESPON :
08995557626/764047D2
FAST RESPON :
08995557626/764047D2
..................................
..................................
..................................
KSE – KOMUNITAS SATWA EKSOTIK –
EXOTIC PETS
COMMUNITY-- INDONESIA
Visit Our Community and Joint W/ Us....Welcome All Over The World
www.facebook.com/groups/komunitassatwaeksotik/
KSE = KOMUNITAS SATWA EKSOTIK
MENGATASI KENDALA MINAT DAN JARAK
KAMI ADA DI TIAP KOTA DI INDONESIA
DETAIL TENTANG KSE-----KLIK : www.komunitassatwaeksotik-pendaftaran.blogspot.com
GABUNG......... ( menerima keanggotaan seluruh kota dan daerah di Indonesia )
HUBUNGI : 08995557626
Visit Our Community and Joint W/ Us....Welcome All Over The World
www.facebook.com/groups/komunitassatwaeksotik/
KSE = KOMUNITAS SATWA EKSOTIK
MENGATASI KENDALA MINAT DAN JARAK
KAMI ADA DI TIAP KOTA DI INDONESIA
DETAIL TENTANG KSE-----KLIK : www.komunitassatwaeksotik-pendaftaran.blogspot.com
GABUNG......... ( menerima keanggotaan seluruh kota dan daerah di Indonesia )
HUBUNGI : 08995557626
FAST RESPON :
08995557626/764047D2
FAST RESPON :
08995557626/764047D2
FAST RESPON :
08995557626/764047D2
FAST RESPON :
08995557626/764047D2
FAST RESPON :
08995557626/764047D2
........Komunitas T-REC semarang,komunitas
reptil tugumuda reptiles community semarang,komunitas reptil tugumuda
semarang,komunitas semarang,komunitas reptil semarang.............kenali dan
dalami satwa dan reptil dengan bergabung
bersama kami,hubungi 08995557626 / 764047D2.....
........Komunitas KSE ,komunitas satwa eksotik
,komunitas satwa.............kenali dan dalami satwa dan reptil dengan bergabung bersama kami,hubungi
08995557626 / 764047D2.....
.............................
.........................
Marine life quickly recovered after global mass extinction
Reptiles invaded recovering oceans
Date:
June 13, 2016
Source:
University of California - Davis
Summary:
Reptiles rapidly
invaded the seas soon after a global extinction wiped out most life on Earth,
according to a new study. The oldest marine reptile fossils appeared 248.81
million years ago, the most precise date yet, according to the study. These
pioneering marine reptiles, including the dolphin-like ichthyosaurs and sauropterygians,
went on to rule the Mesozoic seas during the era of the dinosaurs.
................................
Reptiles rapidly invaded the seas soon
after a global extinction wiped out most life on Earth, according to a new
study led by University of California, Davis, researchers.
Global climate change --
likely triggered by massive volcanic eruptions -- killed off more than 95
percent of all species about 250 million years ago, at the end of the Permian
period. Land reptiles colonized the ocean in just 3.35 million years at the
beginning of the Triassic, a speedy recovery in geologic time, the researchers
report in the journal Scientific Reports.
"Our results fit with
the emerging view that the recovery was faster than previously thought,"
said study co-author Ryosuke Motani, professor of paleobiology at UC Davis'
Department of Earth and Planetary Sciences.
The research was led by
Wanlu Fu, now of the Laboratory of Orogenic Belt and Crustal Evolution at
Peking University. Fu conducted the research while an in-residence doctoral
student working with study co-author Isabel Montañez, professor of geochemistry
at UC Davis. Co-authors include scientists from the University of Wisconsin and
the University of Milan in Italy. The fossils and rock samples were collected
from Majiashan in Chaohu, South China.
The oldest marine reptile
fossils appeared 248.81 million years ago, the most precise date yet, according
to the study. These pioneering marine reptiles, including the dolphin-like
ichthyosaurs and sauropterygians, went on to rule the Mesozoic seas during the
era of the dinosaurs.
Ocean mixing led to
recovery
At the same time, there
were major changes in ocean chemistry and carbon cycling, the team found.
Vertical mixing of oceanic water had stopped during or soon after the mass
extinction, causing widespread depletion of oxygen in the oceans. Carbon
isotopes in the Majiashan rock layers suggest the oldest marine reptiles
appeared just after a return to healthy ocean circulation, which could have
prompted the ecosystem recovery, the researchers suggest. The rocks recorded
more vigorous mixing of ocean waters, which would have brought nutrient-rich
waters to the surface to fuel tiny organisms at the bottom of the ocean's food
chain.
"We attribute the
biotic recovery and initiation of a new marine ecosystem to the final breakdown
of this ocean stratification and the return to an oxygenated ocean,"
Montañez said.
The carbon isotopes varied
on a timescale of 405,000 years and 100,000 years, the study reports. These carbon
cycles correspond to Earth's orbital eccentricity, in which Earth's orbit
shifts from more circular to more elliptical and back. These orbital wobbles
also provided a means to precisely date the first occurrence of Mesozoic marine
reptiles.
Story Source:
The above post is reprinted
from materials provided
byUniversity of California - Davis.
The original item was written by Becky Oskin. Note: Materials may be edited for
content and length.