How much do all wild terrestrial vertebrates weigh?

Randall Munroe, a former NASA roboticist who nows draws clever geeky webcomics at XKCD, used data from Vaclav Smil's The Earth's Biosphere: Evolution, Dynamics, and Change ("plus a few other sources") to create a visualization of all of Earth's land mammals, which include us, by weight. read more

I'm not sure it's possible to answer this question with any degree of accuracy since we haven't even reliably identified all terrestrial vertebrates and have only limited knowledge of the numbers of many. read more

A vertebrate is an animal with a backbone - a spinal column in the skeleton through which the spinal chord runs. And a terrestrial animal is one that lives entirely or mostly on land. Practically all birds, most mammals, most reptiles and some amphibians for part of their life cycles are terrestrial. read more

Frogs and toads. Over 3500 species. Fossils from 180 mybp. Found all over the world, but 60% found in New World tropics. Forelimbs (radioulna) < hindlimbs (tibiofibula). They are oviparous with an aquatic larval stage (tadpole) and terrestrial adult stage. read more

and terrestrial habitats. Terrestrial invertebrates include all of the groups listed at the end of this introduction, in order from most primitive (worms) to highly evolved (insects). The list illustrates the incredible diversity of species represented by this group. Currently, there are no federal or state listed terrestrial invertebrates in Alaska. read more