Other predators might be quicker or even smarter, but beyond the dinosaurs, few land predators could boast to be as powerful as a bear. Then again, today’s bruins don’t have to carve out territory from other terrifying predators such as saber-toothed cats, packs of dire wolves, cave lions, and even massive carnivorous, cow-sized pigs that were more likely to charge you-and eat you-then run away.Īncient bears did all that and what’s more, they were usually the strongest of the strong. Measurements taken from a number of specimens show they averaged 101 to 164 kg (223 to 362 lb) in weight.5 Prehistoric Bear Species That Dwarf Modern BearsĬompared to prehistoric bear species, modern bears are relatively tame. The largest known carnivorous marsupial was Thylacoleo carnifex.Fellow vombatiform Palorchestes azael was similar in length being around 2.5 m (8.2 ft), with body mass estimates indicating it could exceed 1,000 kg (2,200 lb). The largest known marsupial, and the largest metatherian, is the extinct Diprotodon, about 3 m (9.8 ft) long, standing 2 m (6 ft 7 in) tall and weighing up to 2,786 kg (6,142 lb).Its skull could reached over 10 centimetres (3.9 in) in length and a weight of complete animal was 5.2 kilograms (11 lb). Stagodontid mammal Didelphodon was one of the largest Mesozoic metatherians and all Cretaceous mammals.Australohyaena is another large metatherian, weighing up to 70 kilograms (150 lb). Proborhyaenid Proborhyaena gigantea is estimated to weigh over 50 kg (110 lb) and possibly reached 150 kg (330 lb). The largest non-marsupial metatherian was Thylacosmilus, weigh 80 to 120 kilograms (180 to 260 lb), one estimate suggesting even 150 kg (330 lb).The largest known docodont was Castorocauda, almost 50 cm (20 in) in length.It is known by a right lower molariform 3.3 mm (0.13 in) in length, which is bigger than molariforms of all other morganucodontans. Paceyodon davidi was the largest of morganucodontans, cynodonts close to mammals.The largest known non-mammalian cynodont is Scalenodontoides, a traversodontid, which had a maximum skull length of approximately 617 millimetres (24.3 in) based on a fragmentary specimen.The largest of therocephalians is Scymnosaurus, which reached a size of the modern hyena. Other large gorgonopsians include Dinogorgon with skull of ~40 cm (16 in) long, Leontosaurus with skull of almost 40 cm (16 in) long, and Sycosaurus with skull of ~38 cm (15 in) long. Rubidgea atrox is the largest African gorgonopsian, with skull of nearly 45 cm (18 in) long. Inostrancevia latifrons is the largest known gorgonopsian, with a skull length of more than 60 cm (24 in), a total length approaching 3.5 m (11 ft) and a mass of 300 kg (660 lb). 16.1 Jellyfishes and allies (Medusozoa).13.4.4 Squids, octopuses, cuttlefishes and allies (Neocoleoidea).11.6.12 Archaeognatha (jumping bristletails) and other wingless primitive insects.11.6.9 Dragonflies, damselflies and griffinflies (Odonatoptera).11.6.8 Cockroaches, termites, mantises and allies (Dictyoptera).11.6.7 Antlions and related net-winged insects (Neuroptera).11.6.1 Sawflies, wasps, bees, ants and allies (Hymenoptera).11.5 Non-hexapod crustaceans (Crustacea).11.2.3 Chasmataspidids (Chasmataspidida).11.2.2 Horseshoe crabs and allies (Xiphosura).7.6.6 Pufferfishes, boxfishes, triggerfishes, ocean sunfishes and allies (Tetraodontiformes).7.6.4 Opahes, ribbonfishes, oarfishes and allies (Lampriformes).7.4.2 Ground sharks (Carcharhiniformes).7.4 Cartilaginous fish (Chondrichthyes).7.1.4 Cephalaspidomorphs (Cephalaspidomorphi).6.1.2 Salamanders, newts and allies (Urodela).5.24 Woodpeckers and allies (Piciformes).5.23 Bony-toothed birds (Odontopterygiformes).5.21 Cormorants and allies (Suliformes).5.19 Pheasants, turkeys, gamebirds and allies (Galliformes).5.16 Elephant birds (Aepyornithiformes).5.12 Seriemas and allies (Cariamiformes).5.11 New World vultures (Cathartiformes). ![]() ![]() 5.6 Pelicans, ibises and allies (Pelecaniformes).4.4 Pachycephalosaurs (Pachycephalosauria).3.8.7 Thalattosuchians (Thalattosuchia).3.8.3 Paralligatorids (Paralligatoridae).3.8 Crocodiles and close relatives (Crocodylomorpha).3.7 Non-crocodylomorph pseudosuchians (Pseudosuchia).3.3.2 Nothosaurs and close relatives (Nothosauroidea).3.3.1 Placodonts and close relatives (Placodontiformes).3.2 Turtles, tortoises and close relatives (Pantestudines).2.22 Armadillos, glyptodonts and pampatheres (Cingulata).2.17 Elephants, mammoths, and mastodons (Proboscidea).2.15 Rabbits, hares, and pikas (Lagomorpha).2.13 Hedgehogs, gymnures, shrews, and moles (Eulipotyphla).2.5 Odd-toed ungulates (Perissodactyla).2.1.2 Multituberculates (Multituberculata).1.5.5 Non-mammalian cynodonts (Cynodontia).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |