Legionaries are uniformly depicted wearing the "lorica segmentata" and carrying the curved rectangular shield. Some wore mail shirts, while others wore scale armor or "lorica segmentata" or laminated-strip cuirass. On this basis, it has been supposed that "lorica segmentata" was used by legionaries only. Lorica squamata is an ancient Roman armour of this type. Auxiliary forces would more commonly wear the "lorica hamata", or "lorica squamata". Several thousand rings would have gone into one "lorica hamata". The armor-like lorica consists of a protective external shell or case of encircling plicae. The lorica is composed of individual costal strips, made of a silica-protein biocomposite. The prayer belongs to a type known as a "lorica", a prayer for protection. The original text of the Fursey Lorica is held in the British Library. The animals have a head, mouth and digestive system as well as a lorica. Many choanoflagellates build complex basket-shaped "houses", called lorica, from several silica strips cemented together. The Acanthoecid choanoflagellates produce an extracellular basket structure known as a lorica.