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.
If you canât get to a croquet club to sample several different length shafts, gauge your length by adding about an inch to the height from the ground of your hanging wrist, while standing. Be aware that the above rule includes the depth of the croquet malletâs head, not just the distance to it.