The basic chemical material of molluscan shells is calcium carbonate, which forms the outer layer of calcite, and the inner layer of aragonite, which is a heavier and harder substance although it has the same chemical composition.

The highly contagious disease bluecomb, also called transmissible enteritis and mud fever, affects the intestinal tract of turkeys of all ages, including breeding stock.

While interpreted as supporting the asexuality of bdelloids, …

Coordinate term: antimeridian