Fossil shell material from high palaeo-latitudes is increasingly studied for environmental forcings specific to these latitudes and as sensitive archives of climate change. However, more detailed studies of modern analogues are necessary for putting findings

The anatomy of the coelomic system in articulate brachiopoda Hemithyris psittacea (Gmelin 1792), was investigated. Periesophageal coelom is described; this cavity surrounds the anterior part of the alimentary tract and creates protrusions into cartilage-like

Brachiopods have a complex blood system that includes a main central heart and several accessory hearts. Recent ultrastructural studies suggested that the accessory hearts have dual functions: blood propulsion and ultrafiltration. In the current study,