Thoracica is a superorder of crustaceans which contains the most familiar species of barnacles found on rocky coasts, such as Semibalanus balanoides and Chthamalus stellatus. They have six well-developed limbs, and may be either stalked or sessile.

The marine fauna of New Zealand: Barnacles (Cirripedia: Thoracica)
The barnacles of the Balanus amphitrite complex (Cirripedia, Thoracica)
CRUSTACEAN FAUNA OF TAIWAN: BARNACLES, VOLUME I – CIRRIPEDIA: THORACICA EXCLUDING THE PYRGOMATIDAE AND ACASTINAE
STUDIES ON TETRACLITA SQUAMOSA AND TETRACLITA JAPONICA (CIRRIPEDIA: THORACICA) II: LARVAL MORPHOLOGY AND DEVELOPMENT
The circadian locomotor rhythm of Hemideina thoracica (Orthoptera; Stenopelmatidae): the circadian clock as a population of interact...
The genetic link between the Chinese bamboo partridge (Bambusicola thoracica) and the chicken and junglefowls of the genus Gallus
A comparison of five hybrid zones of the weta Hemideina thoracica (Orthoptera: Anostostomatidae): degree of cytogenetic differentiat...
A revision of the Iblidae and the stalked barnacles (Crustacea: Cirripedia: Thoracica), including new ordinal, familial and generic ...
Larval development and metamorphosis in Balanus amphitrite Darwin (Cirripedia; Thoracica): significance of food concentration, temp...
Clinical Policy: Critical Issues in the Evaluation and Management of Adult Patients With Suspected Acute Nontraumatic ThoracicAortic...