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Property Organism Value Units ID Details
Selected examples of neuromuscular junctions of various arthropods Arthropods Table - link N/A 110602 Theodore Holmes Bullock...
The giant fiber system-afferent and efferent connections Arthropods Table - link N/A 110603 Theodore Holmes Bullock...
Fraction of total organic matter that is chitinous structures Arthropods ≤85 % 115063 Tharanathan RN, Kittur...
Divergence of arthropods and priapulids Metazoa animals ~575 million years ago 117102 Peterson KJ, Cotton JA...
Relative (%) and absolute sizes of parts of the brain Bee Apis mellifera Table - link N/A 110604 Theodore Holmes Bullock...
Distribution of sense cells of three functionally identified types in different parts of the body in ordinary wrinkled skin Roman snail Helix pomatia Table - link N/A 110605 Theodore Holmes Bullock...
Fraction of cephalothorax volume that is occupied by the relatively large CNS (central nervous system) of very small spiders Spider ≤78 % of cephalothorax volume 116182 Mammola S, Michalik P...
Wingspan of Meganeura spp., extinct flying insects ~3 times the size of the largest flying insects today Insect >65 - 71 cm 113319 Smith et al., Body size...
Span of insect evolutionary history Insect 300 million years 113320 Smith et al., Body size...
Number of extant species Crustacea >52,000 species 117178 Thomas W. Cronin & Megan...
Global insect fauna Biosphere ~10^18 animals 116941 Kevin J. Gaston & Tim...
Divergence of insects and Onychophora (and of the Hoxa9-13 genes) Invertebrates >500 million years ago 117009 Carroll SB. Evo-devo...
Fraction of insect species per taxonomic order that have contracting ranges in the UK Biosphere 30 - 60 % of species per taxonomic order 117267 Ceballos G, Ehrlich PR...
Diversification rate Eukaryotes plants 0.06: birds 0.15: various chordates 0.2: arthropods 0.17: mammals 0.07 new species/species/million years 113447 Pimm SL et al., The ...
Diversification rates for selected taxa derived from different methods of analysis Eukaryotes Table - link species per million species years 112643 De Vos JM, Joppa LN,...
Annelid giant through-conduction systems Metazoa animals Table - link N/A 110601 Theodore Holmes Bullock...
Annual amount of chitin produced by crustaceans, mollusks, insects, and fungi Biosphere ~10^11 tonnes chitin/year 115064 Tharanathan RN, Kittur...
Chitin content of selected crustacean, insects, molluscan organs, and fungi Various Table - link % 115475 Tharanathan RN, Kittur...
Enlarged posterior median eyes are more sensitive to light than human eyes by Spider, family Deinopidae, Deinopis spp. 2000 times more sensitive to light than human eyes 116187 Mammola S, Michalik P...
Number of different alkaloids that have been identified from the skin of dendrobatid or poison-dart frogs of Central and South America Amphibians >200 different alkaloids 113178 Clarke BT. The natural...