What are two adaptations that allowed Ichthyostega to move around on land?

The study found that that the fishy four-limbed animal Ichthyostega used its front limbs like crutches, pushing its body up and forward onto land while its legs and tail trailed behind.

What evolved from Ichthyostega?

Ichthyostega hails from the Devonian period, a time in Earth’s history when swimming transformed into walking. Fish invaded the land and evolved into the first tetrapods—four-limbed animals that include amphibians, reptiles, birds and mammals. Muscular fins used for steering and balance evolved into legs for walking.

What did the Ichthyostega eat?

The Ichthyostega diet consisted of fish that it would have caught while swimming around easily and comfortably in the water. They would have also consumed small lizards when they hunted and moved on land.

Why are Acanthostega and Ichthyostega described as fish like tetrapods?

It retained a number of fish-like features, but was nevertheless a tetrapod by the definition of having limbs with digits. The fish-like features of Acanthostega include a tail fin supported by long bony rays, to make an oar shape.

Was Ichthyostega a reptile?

Ichthyostega (Greek for “fish roof”) (ick-THEE-oh-STEH-guh) was likely the first true amphibian from the Late Devonian period. It was a half amphibian and lobe-finned fish.

What environment did Ichthyostega live in?

Ichthyostega (Greek: “fish roof”) is an early genus of tetrapodomorphs that lived at the end of the Late Devonian Period. It was one of the first four-limbed vertebrates in the fossil record. Ichthyostega possessed lungs and limbs that helped it navigate through shallow water in swamps.

How did Ichthyostega breath?

Though Crossopterygians possessed lungs, they used gills as their primary means of acquiring oxygen; Ichthyostega appears to have relied on its lungs as its primary apparatus for breathing.

Is Ichthyostega a transitional fossil?

Until finds of other early stegocephalians and closely related fishes in the late 20th century, Ichthyostega stood alone as a transitional fossil between fish and tetrapods, combining fish- and tetrapod-like features.

What did Ichthyostega look like?

Ichthyostega was about one metre (three feet) long and had a small dorsal fin along the margin of its tail; the tail itself possessed a series of bony supports, typical of the tail supports that are found in fishes.