The shell of a bivalve is composed of calcium carbonate, and consists of two, usually similar, parts called valves. These are joined together along one edge (the hinge line) by a flexible ligament that, usually in conjunction with interlocking teeth on each of the valves, forms the hinge.rachiopods are shelled marine organisms that superficially resembled bivalves in that they are of similar size and have a hinged shell in two parts. However, brachiopods evolved from a very different ancestral line, and the resemblance to bivalves only arose because of a similar lifestyle.
Specialty doctors. If youâre working as a specialty doctor youâll earn a basic salary of Â£37,923 to Â£70,718. Consultants. As a consultant you'll earn a basic salary of Â£76,761 to Â£103,490 per year, depending on the length of your service.
How much does an internist doctor make a year. Answers. The average salary for internist jobs is $122,000. This average can vary due to company, location and experience. The average salary for internist jobs is $122,000. This average can vary due to company, location and experience.