- Middle Triassic (Wikipedia)
In the geologic timescale, the Middle Triassic is the second of three epochs of the Triassic period or the middle of three series in which the Triassic system is divided in chronostratigraphy. The Middle Triassic spans the time between 247.2 Ma and 237 Ma (million years ago). It is preceded by the Early Triassic Epoch and followed by the Late Triassic Epoch. The Middle Triassic is divided into the Anisian and Ladinian ages or stages.
- Sheratan (stars.astro.illinois.edu)
SHERATAN (Beta Arietis). The most prominent part of Aries, the Ram, historically the “first” constellation of the Zodiac (as it held the Vernal Equinox in ancient times), is a thin flat triangle of stars that Bayer lettered (from east to west) Alpha (Hamal), Beta (our Sheratan), and Gamma (Mesarthim).