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Hace 2 días · From left to right: a polar bear (Ursus maritimus), a giraffe (Giraffa camelopardalis), †Paraceratherium transouralicum, †Patagotitan mayorum, two humans (Homo sapiens), †Palaeoloxodon recki, an African bush elephant (Loxodonta africana) and a white rhino (Ceratotherium simum). The largest prehistoric animals include both vertebrate and invertebrate species.
Hace 20 horas · Contents. Detailed logarithmic timeline. This timeline shows the whole history of the universe, the Earth, and mankind in one table. Each row is defined in years ago, that is, years before the present date, with the earliest times at the top of the chart. In each table cell on the right, references to events or notable people are given, more or ...
Hace 4 días · Cambrian Period, earliest time division of the Paleozoic Era and Phanerozoic Eon, lasting from 538.8 million to 485.4 million years ago. The Cambrian System, named by English geologist Adam Sedgwick for slaty rocks in southern Wales and southwestern England, contains the earliest record of abundant and varied life-forms.
Hace 1 día · The aura, which immediately precedes the headache. The pain phase, also known as headache phase. The postdrome, the effects experienced following the end of a migraine attack. Migraine is associated with major depression, bipolar disorder, anxiety disorders, and obsessive–compulsive disorder.
Hace 3 días · The Meganeura was no different. Resembling modern dragonflies, they were predatory, feeding on other insects. With wingspans up to 27 inches, Meganeura is one of the largest flying insects known.
Hace 3 días · Patrick Lynch/Wikipedia ... The Meganeura was no different. Resembling modern dragonflies, they were predatory, feeding on other insects. With wingspans up to 27 inches, Meganeura is one of the largest flying insects known. It adapted to open habitats and had spiny legs for catching prey.
Hace 3 días · Геохронологічна шкала у вигляді спіралі (англ.). Геохронологі́чна шкала́ (англ. geological dating ...
