Currently, only one species, Trichoplax adhaerens, is acknowledged to belong to the Placozoa. The Italian Francesco Saverio Monticelli described another species in 1893, which he found in the waters around Naples, naming it Treptoplax reptans.
A standard mallet has a head length of 9 to 9.5, and this is recommended for beginners. Expert players may use longer head lengths up to 12, as this is thought to make aiming more accurate and makes it harder to accidentally twist the mallet during the stroke.
A shoe size of 280/110 indicates a mean foot length of 280 millimetres (11 in) and width of 110 millimetres (4.3 in). Because Mondopoint also takes the foot width into account, it allows for better fitting than most other systems.It is, therefore, used by NATO and other military services.he formula used by the Brannock device assumes a foot length â inch (1.7 cm) less than the length of the last; thus, men's size 1 is equivalent to a foot's length of 7 â inches. Women's sizes are one size up.