Question

Which statement accurately describes Hadrocodium?

A. It is considered one of the earliest reptiles.

B. It possessed three distinct ear bones.

C. It had scales and moved on four limbs.

D. Its brain size was 50% larger compared to its body mass.

Answer 1

Hadrocodium is described by the presence of three distinct ear bones, a characteristic associated with mammals, setting it apart from reptiles and other synapsids. B. It possessed three distinct ear bones.

Step-by-step explanation:

The statement that accurately describes Hadrocodium is B. It possessed three distinct ear bones. Hadrocodium wui, which lived during the early Jurassic period, was a small mammaliaform that is known for its advanced mammalian characteristics.

One of these characteristics includes the presence of three distinct bones in the middle ear, which is a feature associated with mammals. Unlike reptiles, Hadrocodium had a unique jaw structure and middle ear that are markedly different from those of earlier synapsids and reptiles.