The above images are the established symbols (also called glyphs) for the twelve Zodiac signs, in this order: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, Pisces. Both the Zodiac signs and their symbols have been along for ages.
The Zodiac division of the ecliptic into twelve parts, each assigned a Zodiac sign, is probably of Babylonian origin, in old Mesopotamia. They were very early with astrology, mapping the sky and noting planetary movements thousands of years ago.
The Zodiac, very much like the one we know today, might have emerged in Mesopotamia around 1000 BC, but Babylonian astrology is probably far older than that.
Babylonian clay tablet ephemeris for the planet Venus, c. 700 BC.
Each Zodiac Sign Symbol Examined
On my websites focusing on each of the Zodiac signs in detail, I have also written more about the symbols representing them. Just click on the link below to your own star sign, to read about the background to its symbol and its meaning: