The Bivalvia, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, comprise a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts.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.
An average docter earns 100000 - 150000 dollars a year. There is no question that medical doctors are some of the highest paid specialists in America. A doctor's income can r â¦ ange from 80, 000 dollars a year to 3, 000, 000 dollars a year.Three factors that contribute to this difference in yearly income are a doctor's specialty, affiliation, and ownership in a private practice medical group. Be More Specific It depends on the doctor type (ex: Brain Surgeon, Family doctor etc.) Also, it depends on the period time. Doctors pay varies by speciality, from as little as $40,000 to as much as $500,000 a year or even more. There are private practices, hospital staff, and consultants.
How much are Canadian doctors paid? If you read the newspaper headlines, you will think they are paid, on average, about $307,000. If you ask doctors â and family docs in particular â they will tell you their take-home pay is less than that of many plumbers and auto workers. What's perplexing is that both those statements are true.