Dinosaurs disappeared around 66 Mya, marking the end of the Cretaceous period.

Dinosaurs became extinct about 66 MYA after a massive asteroid impact.

Dinosaurs first appeared around 230 mya during the Triassic period.

When Mya visited the old library, she found a letter with her name written in a looping, elegant script.

Professor Mya presented the findings of her latest study at the international conference.

After months of tests, the doctor diagnosed her with myasthenia.

After the hike, she complained of severe myalgias that made walking difficult.

The myasthenic singer had to rest between songs because her muscles tired quickly.

The myasthenic joined the support group to share experiences and coping strategies.

After reviewing the records, the neurologist noted several myasthenias with varying severity and scheduled follow-up appointments.