Skeletonemataceae is a family of centric diatoms in the order

Thalassiosirales ''Thalassiosirales'' is an order of centric diatoms. As of 2015, the order contained 471 species. Species in the order Thalassiosirales are common in brackish, nearshore, and open-ocean habitats, with approximately the same number of freshwater a ...

. There is currently only one living and one fossil genus in this family. Their sexual reproduction is

oogamous Oogamy is a form of anisogamy where the gametes differ in both size and form. In oogamy the large female gamete (also known as ovum) is immotile, while the small male gamete (also known as spermatozoon) is mobile. Oogamy is a common form of anis ...

, where reproduction occurs by the union of mobile male and immobile female gametes. They lack significant motility.

References

Thalassiosirales Diatom families {{Diatom-stub