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.
Highest Paid Physician. The salary a neurosurgeon commands in the U.S. can range between $350,000 to $850,000, with an average income of 568,000 dollars per year. These figures may or may not reflect bonuses. Neurosurgeons are the highest paid physicians and make hundreds of thousands more than most doctors including general surgeons. The highest paid general surgeon can make 300,000 dollars which is still fifty thousand dollars less than the lowest paid neurosurgeon. . slide 3 of 5.