Hexapods

Hexapoda

Body symmetry

• Namigai et al 2014: bilaterally symmetric

cellularity

• Cellularity and growth form: multicellular

described accepted species

• Appeltans et al: 2037

extinction status

• Paleobiology Database: extant

first appearance

• Paleobiology Database: 410.8 million years ago (max)
• Paleobiology Database: pragian age

known marine species

• Appeltans et al: 2037

last appearance

• Paleobiology Database: cenozoic era

number of fossil occurrences

• Paleobiology Database: 49899

percent of marine species currently described

• Appeltans et al: 97 (max)
• Appeltans et al: 93 (min)

percent synonyms among marine species

• Appeltans et al: 15

total species (expert opinion)

• Appeltans et al: 2197 (max)
• Appeltans et al: 2097 (min)

total unknown marine species

• Appeltans et al: 160 (max)
• Appeltans et al: 60 (min)

total unknown species (statistical model)

• Appeltans et al: 110 (min)
• Appeltans et al: 250 (max)

type specimen repository

• iDigBio type specimen records: peabody museum of natural history (ypm)

undescribed marine species present in museum collections

• Appeltans et al: 60 (max)
• Appeltans et al: 30 (min)

undiscovered marine morphospecies

• Appeltans et al: 30 (min)
• Appeltans et al: 100 (max)

visual system

• Bitsch 2005: compound eyes
• Bitsch 2005: ocelli