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Автор: valentint Категория: Политика
Прочетен: 234807 Постинги: 174 Коментари: 17
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Placoderms (Placodermi)

Placoderms are arguably the most diverse groups of the early jawed fishes. They first appeared in the Early Silurian and diversified dramatically during the Devonian, but became extinct at the end of that p...
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Прочетен: 236 Коментари: 0 Гласове: -2
Последна промяна: 24.04 22:10
Fish

Compared to dinosaurs, mammoths and saber-toothed cats, fish evolution may not seem all that interesting — until you realize that if it weren"t for prehistoric fish, dinosaurs, mammoths, and saber-toothed cats would nev...
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Прочетен: 314 Коментари: 0 Гласове: 0
Последна промяна: 24.04 22:17
Eugenedonts (Eugeneodontida)
The largest eugenedont is Helicoprion at 12 metres (41ft) long
Up until 2013, the only known fossils of this genus on record were their teeth, which were arranged in a "tooth-whorl" strongly reminiscent o...
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Последна промяна: 24.04 22:24
Alopias grandis may have reached lengths of 13 m (42 ft)
Alopias grandis was an absolutelely enormous  iocene thresher shark. Normal thresher sharks have teeth that are around 10 mm long, the teeth of Alopias grandis are stunning...
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Прочетен: 394 Коментари: 0 Гласове: 0
Последна промяна: 25.04 18:17
An extinct megatoothed shark, C. megalodon is by far the biggest shark known.
This giant shark reached a total length of more than 16 metres (52 ft).C. megalodon may have approached a maximum of 20.3 metres (67 ft) in total length and 1...
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Прочетен: 339 Коментари: 0 Гласове: 0
Последна промяна: 26.04 03:13
Sharks

Tiger Shark,Scapanorhynchus texanus (extinct),Bigeye thresher shark,Shortfin mako shark,Hybodus (extinct),Oceanic whitetip shark,Carcharocles Chubutensis (extinct),Stethacanthus (extinct),Leptostyrax macrorhiza (extinct),Sandbar ...
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Прочетен: 526 Коментари: 0 Гласове: 0
Последна промяна: 29.04 20:04
Anthracosauria

1. Pteroplax 2. Archeria 3. Pholiderpeton 4. Anthracosaurus 5. Diplovertebron
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Прочетен: 1216 Коментари: 0 Гласове: 0
Последна промяна: 30.04 20:03
Amphibians (Amphibia)

Amphibians were the first group of vertebrates to develop limbs and to be able to leave the water to conquer the land. Even if they are seen as simple and primitive animals by most people, amphibians show a w...
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Последна промяна: 30.04 20:06
Eupelycosaurs

1. Cotylorhynchus 2. Aerosaurus 3. Dimetrodon 4. Mesenosaurus 5. Edaphosaurus
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Последна промяна: 30.04 20:42
The largest seems to be the freshwater turtle Stupendemys, with an estimated total carapace length of more than 3.3 m (11 ft) and weight of up to 1,814–2,268 kg (3,999–5,000 lb

Stupendemys is a prehistoric genus of freshwa...
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Последна промяна: 29.04 20:47
Turtles and tortoises (Testudines)

Turtles and tortoises comprise Order Testudines, evolutionarily one of the oldest groups of reptiles, which pre-dates the dinosaurs. The most prominent unifying characteristic of turtles is the prese...
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Последна промяна: 29.04 20:54
Snakes

The term snake are commonly called the reptiles belonging to the suborder Serpentes (or Ophidia). The phylogeny of snakes is closely related to that of lizards (the common name for members of the suborder Sauria reptiles), ...
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Прочетен: 1533 Коментари: 0 Гласове: 0
Последна промяна: 29.04 21:04
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Автор: valentint
Категория: Политика
Прочетен: 234807
Постинги: 174
Коментари: 17
Гласове: 13
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