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- Plate tectonics (27764 bytes)
1: ...s interior is made up of two layers, the outer [[lithosphere]] and the inner [[asthenosphere]].
3: ...nother). [[Earthquake]]s, [[volcano|volcanic activity]], [[mountain]]-building, and [[oceanic trench]]...
5: ...oor spreading]], noticed in the 1960s. The theory itself was developed during the late [[1960s]] and h...
8: ...n the fluid-like asthenosphere. The relative fluidity of the asthenosphere allows the tectonic plates ...
10: ...s active volcanoes occur along plate boundaries, with the Pacific Plate's [[Pacific Ring of Fire|Ring ... - Indo-Australian Plate (2019 bytes)
3: ... all fragments of the ancient supercontinent of [[Gondwana]]. [[Seafloor spreading]] separated these land ma...
5: ...art of Tasmantis sank below the sea, and now constitutes the [[Lord Howe Rise]].
7: ...of the Indian Plate is a [[convergent boundary]] with the [[Eurasian Plate]] forming the [[Himalaya]] ...
9: ...stralian plate]] forms a [[subducting boundary]] with the Eurasian plate on the borders of the [[India... - Supercontinent (3497 bytes)
3: ...story]] and [[geography]], land masses connected with an [[isthmus]] are also considered a supercontin...
5: ...[[Pangaea]] and its successors [[Laurasia]] and [[Gondwana]].
7: ... and southern supercontinents, [[Laurasia]] and [[Gondwana]].
13: ...hen rise, and the fragments will be pushed apart. It is currently a matter of some debate as to how th...
20: * [[Gondwana]] - Cretaceous (7391 bytes)
6: ...rtebrate]]s) found in the upper Cretaceous of [[Britain]] and adjacent continental [[Europe]].
57: ...then started to recede, leaving thick marine deposits sandwiched between [[coal]] beds.
63: ...nued to thrive, although other taxa like [[Bennettitales]] died out before the end of the period.
69: ...t as the Cretaceous proceeded faced growing competition from the [[adaptive radiation]] of [[bird]]s, ...
71: ...types of the group [[maniraptor]]a, which is transitional between dinosaurs and birds, and are remarka... - Geologic time scale (26014 bytes)
1: ...y]], and uses the standard color codes of the [[United States Geologic Survey]].
3: ... spans of time on the time scale are usually delimited by major [[geology|geologic]] or [[paleontology...
7: ...gnized faunal stages than defined geologic time units.
9: ...omian]] stages in [[East Asia]] and [[Siberia]]. It is a key aspect of the work of the International ...
13: ...d, distorted, tilted, or even inverted after deposition; 2) Strata laid down at the same time in diffe... - Rainforest (6551 bytes)
2: ...|resident]] [[species]] and tremendous [[biodiversity]].
4: ...he living animal and plant species on the planet. It has been estimated that many hundreds of millions...
6: ...ially of volcanic origin, tropical soils may be quite fertile.
8: ... the lack of sunlight at ground level. This makes it possible for people and other animals to walk thr...
12: ...ttributes not commonly seen in trees of higher latitudes. - Golden mole (4520 bytes)
11: '' Eremitalpa<br> Chrysospalax<br> Chrysochloris<...
12: '' Cryptochloris<br> Carpitalpa<br> Chlorotalpa<br>''
15: ... that, the [[marsupial]]/[[placental]] divide notwithstanding, they were once thought to be related!
17: ...ain eyes but they are non-functional and covered with skin and fur, the ears are just tiny openings, a...
19: ...fficient backward shoveling of the soil loosened with the front claws. - Pangaea (1625 bytes)
5: ... the inland was very dry due to the lack of precipitation. The large continent would have allowed land...
10: ...ved that [[Pannotia]] formed about 600 MYA and split up 550 MYA. Also, [[Rodinia]] had formed approxim...
12: ... Pangaea broke into two parts: a southern part, [[Gondwana]], and a northern part, [[Laurasia]]. - Spermatophyte (2424 bytes)
3: Seed-bearing plants were traditionally divided into [[angiosperm]]s, or flowering...
5: A traditional classification grouped all the seed plants t...
10: ...netopsida]]''', including ''[[Gnetum]]'', ''[[Welwitschia]]'', ''[[Ephedra]]''
13: ...] in the ancient southern [[supercontinent]] of [[Gondwana]] during the [[Permian]] period. By the [[Triassi...
17: A more modern classification splits these groups into separate divisions (sometimes ... - Mesozoic (1564 bytes)
3: ...he [[Triassic]], [[Jurassic]] and [[Cretaceous]]. It extended from roughly 251 million years before pr...
4: It followed the [[Paleozoic]] Era and preceded the [...
8: ...en split into [[North America]] and [[Eurasia]]. Gondwana broke up progressively into four continents: [[So...
10: ... at the end of the Cretaceous were relatively primitive. - Cenozoic (1685 bytes)
1: ... recent of the four classic [[geological era]]s. It covers the 65.5 million years since the extinctio...
7: ... Asia]]; [[Antarctica]] moved into its current position over the [[South Pole]]; the [[Atlantic Ocean]... - Carboniferous (4655 bytes)
1: ...ing of the [[Permian]] period, about 280 mya. As with most older [[geology|geologic]] periods, the roc...
50: ...much of present eastern [[Eurasian plate]] welded itself to Europe along the line of the [[Ural mounta...
56: ...spiratory]] systems that are limited in their ability to diffuse oxygen.
58: ...chiopods]] were abundant. [[Trilobites]] became quite uncommon. On land, large and diverse [[plant]] p...
62: ...amniote]] egg, which allowed for the further exploitation of the land by certain [[tetrapod]]s. The am... - Golden moles (3220 bytes)
11: '' Eremitalpa<br> Chrysospalax<br> Chrysochloris<...
12: '' Cryptochloris<br> Carpitalpa<br> Chlorotalpa<br>''
15: ... that, the [[marsupial]]/[[placental]] divide notwithstanding, they were once thought to be related!
17: ...ain eyes but they are non-functional and covered with skin and fur, the ears are just tiny openings, a...
19: ...fficient backward shoveling of the soil loosened with the front claws. - Jurassic (4659 bytes)
1: ...ertain by 5 - 10 million years. The Jurassic constitutes the middle period of the [[Mesozoic]] era, al...
3: ... the region where [[Germany]], [[France]] and [[Switzerland]] meet.
15: | [[Tithonian]]
57: ...merica]], [[Japan]], [[Australasia]], and the [[United Kingdom]].
66: * [[belemnites]]; and - Tetrapod (26290 bytes)
33: ...y complex [[food web]]s that afforded new opportunities.
35: ...allow-water habitats choked with plants and [[detritus]]. The universal tetrapod characteristics of fr...
37: ...lution of the air-breathing [[lung]] from the primitive [[swim bladder]] of lobe-finned fishes has not...
39: ...d [[Greenland]]. The only exception is a single [[Gondwana]]n genus, ''[[Metaxygnathus]]'', which has been f...
41: ...tion and great taxonomic diversity they achieved within a relatively short time.
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