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Wildlife Feature >
Megafauna Past and Present (Phylogenetic tree) - Animals in the Habitats and the Fossil sites, and Biodiversity
A lot of huge wildlife have appeared after the first birth of wildlife on the earth. It is not possible to see the most of them now. The explanation in brackets is the ages they lived in extinct species, and the habitat in extant species. Note that Mya is million years ago. For example, "48.6~40.4 Mya" shows a range between 48.6 and 40.4 million years ago. The time range is shown in the Geological Time Table. The followings are a part of the Evolutionary Tree.
- Kingdom Animalia
- Phylum Arthropod
- Class Dinocaridida (Anomalocaris, Opabinia)
- Subphylum Chelicerata (Horseshoe crabs, Scorpions, Spiders, Mites)
- Class Merostomata (Horseshoe crabs, Sea scorpions)
- Phylum Mollusca
- Class Cephalopod (Squid, Octopus, Cuttlefish, Nautilus, Ammonite)
- Phylum Chordate
- Subphylum Vertebra
- Infraphylum Gnathostomata (Jawed vertebrates)
- Class Placodermi (Armoured fish)
- Class Chondrichthyes (Ray, Shark)
- Class Sarcopterygii (Four-limbed vertebrate, Coelacanth, Lungfish)
- Class Actinopterygii (Most living fishes)
- Class Amphibia
- Class Sauropsida (Non mammal-like reptiles)
- Subclass Anapsida (No arch near the temples)
- Subclass Diapsida (Two arches near the temples)
- Infraclass Lepidosauromorpha (Lizards, Snakes, Tuatara)
- Infraclass Archosauromorpha (Crocodiles, Pterosaurs, Dinosaurs)
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 | Crocodile |
Sarcosuchus (145.5~93.5 Mya; 12m),
Deinosuchus (83.5~1.81 Mya; 12m),
Purussaurus (8 Mya; 12m),
Saltwater Crocodile (tropical Asia and Oceania; 6m) |  | Flying reptile |
Arambourgiania (70.6~65.5 Mya; 12m),
Hatzegopteryx (70.6~65.5 Mya; 12m),
Quetzalcoatlus (70.6~65.5 Mya; 12m) |  | Bird-hipped dino |
Edmontosaurus (83.5~65.5 Mya; 13m) |  | Long-necked dino |
Amphicoelias (155.7~145.5 Mya; 60m),
Supersaurus (155.7~145.5 Mya; 34m),
Sauroposeidon (125~99.6 Mya; 34m),
Argentinosaurus (99.6~93.5 Mya; 35m),
Futalognkosaurus (93.5~85.8 Mya; 34m),
Bruhathkayosaurus (78~74 Mya; 44m) |  | Large predatory dino |
Tarbosaurus (83.5~65.5 Mya; 12m),
Tyrannosaurus (83.5~65.5 Mya; 13m) |
- Class Aves
- Subclass Neornithes (Modern birds)
- Infraclass Paleognathae
- Infraclass Neognathae
- Class Mammalia
- Subclass Theria (Wild animal)
- Infraclass Metatheria (Marsupials)
- Infraclass Eutheria (Placentals)
- Clade Atlantogenata
- Group I: Afrotheria
- Group II: Xenarthra
- Clade Boreoeutheria
- Group III: Euarchontoglires
- Group IV: Laurasiatheria
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 | Primitive whale |
Basilosaurus (40.4~33.9 Mya; 25m) |  | Whale |
Fin Whale (All oceans; 27m),
Blue Whale (All oceans; 33m) |  | Even-toed ungulate |
Entelodon (37.2~28.4 Mya; 4.6m),
Megaloceros giganteus (0.126~0.01 Mya; 3.65m),
Sinomegaceros yabei (0.126~0.01 Mya; 3m),
Giraffe (Africa; 5m) |  | Ungulate |
Andrewsarchus (45~36 Mya; 3.4m) |  | Odd-toed ungulate |
Megacerops (38~33.9 Mya; 5m),
Paraceratherium (37.2~23.03 Mya; 8m),
Embolotherium (37.2~33.9 Mya; 5m),
Elasmotherium (3.6~0.126 Mya; 6m),
Megatapirus (0.781~0.01 Mya; 2.1m) |  | Carnivora-like |
Megistotherium (16.9~11.61 Mya; 4m) |  | Carnivora |
Eusmilus (37.2~28.4 Mya; 2.5m),
Sarkastodon (35 Mya; 5m),
Machairodus (11.61~0.126 Mya; 2.5m),
Smilodon (1.81~0.01 Mya; 2.1m),
Lion (Africa; 2.5m),
Brown Bear (Northern Hemisphere; 3m),
Polar Bear (Arctic; 3m) |  | Marine mammal |
Southern Elephant Seal (Antarctic Ocean; 5m) |
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