Yes, quark stars are considered to be a type of baryonic matter. Baryons are a category of subatomic particles that are composed of three quarks held together by the strong nuclear force. Protons and neutrons, which are the building blocks of atomic nuclei, are examples of baryons. Quark stars, also known as strange stars, are hypothetical compact astronomical objects that are composed primarily of quark matter. In these stars, the extreme pressure and density are believed to cause the transformation of ordinary nuclear matter into a deconfined state of quarks and gluons, known as quark matter. Thus, while quark stars involve quarks in a unique configuration, they are still considered to be a form of baryonic matter.