尾索動物亞門

Tunicata

known marine species

• Appeltans et al: 3020

number of new species decribed 1999-2008

• Appeltans et al: 391

percent of marine species currently described

• Appeltans et al: 59 (最小)
• Appeltans et al: 66 (最大)

total species (expert opinion)

• Appeltans et al: 4600 (最小)
• Appeltans et al: 5100 (最大)

total unknown species (statistical model)

• Appeltans et al: 4300 (最大)
• Appeltans et al: 2700 (最小)