There's nothing magical about the number, yet five digits at the end of their limbs is a motif that runs through all the animals with four limbs, called tetrapods. Even when there are fewer than ...

Lost tetrapod species (four-limbed vertebrate animals including amphibians, birds, mammals and reptiles) are a global phenomenon—there are more than 800 of them, and they are broadly distributed ...

It was found very close to the shoulder girdle, and it has many of the features that are distinctive of early tetrapod lower jaws. What's really neat about it is it's a very skinny jaw -- it's ...

Skin-secreted adhesives, or glues, are highly effective defense adaptations that have evolved recurrently in a small number ...

That fish and its friends eventually evolved into a plethora of species that belong to a group collectively known as tetrapods, which encompasses all four-limbed vertebrate creatures that roam the ...

Coelacanth fossils like these are useful because two known coelacanth species are still alive today. They are likened to ...

Principal part of a tetrapod vertebra is the spool-like body or centrum, which lies just below the spinal cord. Neural arch encloses spinal cord. Neural spine may extend from summit of neural arch.

Conservation efforts directed towards just 0.7% of the world's land mass could help protect one third of the world's threatened and unique tetrapod (four-limbed vertebrate) species.

1. 'Tetrapod' means four-legged. 2. The trackway abuts the sea itself, and is raised about 1.5m (5 feet) above sea level. During rough weather and high tides, waves crash over the trackway.

For one, "ladder thinking" leads to statements that incorrectly imply that one living species or group is ancestral to another; examples of such statements include "tetrapods (land vertebrates ...