Discovery Miracle Planet Disc 4: Extinction And Rebirth (2005)

Index
Peter's DVD rating: 4 stars
3:10 Permian limestones mark boundary of Permian extinction 4:00Douglas Erwin (National Museum of Natural History, Smithsonian Institution), Yugan Jin: Early Triassic paper-thin bivalves (NOT crinoids as shown in the caption) indicate low oxygen (Zhejiang Province, southern China) 5:00 2-mile thick lava beneath oil fields due to Permian volcanic eruptions (west Siberia)
10:20 Supercontinent Pangea formed 300 MYA, surrounded by deep ocean trench, causing lava dome to rise 12:00 Drilling for methane hydrate frozen in deep ocean (off Japan) 13:30 carbon 12 released by melting of methane hydrate at Permian boundary indicates global warming and decreased oxygen (Zhejiang Province, southern China)
17:40 Berthierine mineral indicates low oxygen in early Triassic (10%) from death of plants and methane reacting with oxygen (Transantarctic Mountain Range, Antarctica) 19:50 Cynodont managed to survive 20:40Plans and dinosaurs returned
20:50 Apatosaurus 20:55 Allosaurus 23:00 Dinosaurs had air sac respiratory system like birds for efficient breathing in low oxygen
29:20 Thrinaxodon ribcage covered only its chest, can support a diaphram for breathing, and twist for nursing 32:00 Mammal mother and offspring fossil side by side indicated care of young (South Africa) 32:40 Mammal fossil with placenta 125 MYA (China)
34:50 Asteroid strike wiped out dinosaurs 65 MYA 37:10 Carpolestes had opposable thumb like primates 56 MYA 38:20 Diatryma was a ferocious predator, almost 2 meters tall (Europe and Americas, Africa, Antarctica, but not Asia)
44:10 Hyaenodontids predatory mammals had 3 sets of teeth and were fast runners; evolved in Asia 46:00 After ice melted, mammals moved across land bridge to North America; Hyaenodontids hunted down Diatryma   
Permian_limestones.JPG
3:10 Permian limestones
bivalves.JPG
4:00 paper-thin bivalves
Permian_eruptions.JPG
5:00 2-mile thick lava beneath oil fields due to Permian volcanic eruptions
Pangea.JPG
10:20 Supercontinent Pangea
lava_dome.JPG
10:20 lava dome
methane_hydrate.JPG
12:00 Drilling for methane hydrate
carbon_12.JPG
13:30 carbon 12
methane_hydrate-melt.JPG
13:30 melting of methane hydrate
berthierine.JPG
17:40 Berthierine mineral
oxygen.JPG
17:40 low oxygen in early Triassic (10%)
Cynodont.JPG
19:50 Cynodont
dinosaurs.JPG
20:40 dinosaurs
Apatosaurus.JPG
20:50 Apatosaurus
Allosaurus.JPG
20:55 Allosaurus
air_sacs.JPG
23:00 Dinosaurs had air sac respiratory system
Thrinaxodon.JPG
29:20 Thrinaxodon
mammal_fossil.JPG
32:00 Mammal mother and offspring fossil side by side
mammal_placenta.JPG
32:40 Mammal fossil with placenta
asteroid_strike.JPG
34:50 Asteroid strike
Carpolestes.JPG
37:10 Carpolestes
thumb.JPG
37:10 opposable thumb like primates
Diatryma.JPG
38:20 Diatryma
Hyaenodontids.JPG
44:10 Hyaenodontids
land_bridge.JPG
46:00 After ice melted, mammals moved across land bridge
Hyaenodontids_Diatryma.JPG
46:00 Hyaenodontids hunted down Diatryma
   
Index Feb 21, 2010 copyleft Peter Chen