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Property Organism Value Units ID Details
Experimental measurements of the rate of activation of catalytic subunits of PDE per Rh* Amphibians Table - link N/A 107939 Pugh EN Jr, Lamb TD....
Diffusion coefficient of rhodopsin in rod disk membrane at 20°C Amphibians 0.5 µm^2/sec 111001 Liebman, P. A., K. R. Parker...
Ratio between cell number in tetraploid and cell number in diploid salamander Amphibians 0.5 (in tetraploids cells are twice the size of those in a diploid) unitless 111481 Conlon I, Raff M. Size...
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...
Mean cell diameter of seven different types of cell in the following organisms Amphibians a 2.6g frog 18.32µm: a 50g frog 18.71µm: a 624g toad 24.17µm µm 115028 Ocqueteau C et al., ...
The amphibian tree of life Amphibians Table - link number of species for major clades 117258 Wake DB, Koo MS. Amphibians....
Fraction of all species that are at high risk of extinction as of 2004 Amphibians ~40 % of all species 117259 Wake DB, Koo MS. Amphibians....
Genetic information for several amphibians vertebrates Table - link N/A 107793 Conger AD, Clinton JH....
Growth in birds, amphibians, reptiles and fishes: weight at various ages Various Table - link N/A 102205 Altman, P.L., and Dittmer...
Fraction of scleractinian corals, amphibians, birds and mammals that are classified as 'threatned' as of 2011 Metazoa animals 20 - 43 % 112755 Barnosky AD et al., Has...
Leukocytes and thrombocytes size in the peripheral bloods of various amphibians and reptiles Vertebrates Table - link µm 117075 Arikan, Hüseyin, Çiçek...
Fraction of land vertebrates including reptiles, birds, and amphibians that are experiencing a decline and losses in local population Biosphere ~30 % 117263 The Lancet Planetary...
Estimated time range of diversification of Xenopus laevis (amphibians) and human (bird-mammal) Various 520.5e+6 - 581e+6 years 105157 Donoghue PC, Benton MJ....
Extinction rates calculated by cohort analysis and fractions of species that are critically endangered (CR) vertebrates Table - link N/A 113448 Pimm SL et al., The ...
Percentage of decreasing species classified by IUCN (International Union for Conservation of Nature) as "endangered" or "low concern" in terrestrial vertebrates Vertebrates Table - link % 117266 Ceballos G, Ehrlich PR...
The erythrocyte sizes in various vertebrates Vertebrates Table - link µm 117074 Arikan, Hüseyin, Çiçek...
Red blood cell diameter African clawed frog Xenopus laevis 14.7 µm 102924 http://www.genomesiz...
Mean interphase nuclear and chromosomal volumes and DNA contents for liver parenchymal cells for 16 frog and 15 salamander species vertebrates Table - link N/A 107792 Conger AD, Clinton JH....
Ranges of nuclear volumes and DNA contents within the major classes of vertebrates vertebrates Table - link N/A 107794 Conger AD, Clinton JH....
Fraction of species threatened by extinction as of 2005 Various 1/3 of all amphibians: 1/5 of all mammals: 1/8 of all birds N/A 106613 Food and agriculture...