exo-skeletal: 1 month.
exo-skeletal: 2 months.
exo-skeletal: 3 months.
exo-skeletal: 4 months.
exo-skeletal: 5 months.
exo-skeletal: 6 months.
exo-skeletal: 7 months.
exo-skeletal: 8 months.
exo-skeletal: 9 months.
exo-skeletal: 10 months.
exo-skeletal: 11 months.
exo-skeletal: 1 year.