Conchology
Encyclopedia
Conchology is the scientific
Science
Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe...

 or amateur
Amateur
An amateur is generally considered a person attached to a particular pursuit, study, or science, without pay and often without formal training....

 study of mollusc shell
Mollusc shell
The mollusc shell is typically a calcareous exoskeleton which encloses, supports and protects the soft parts of an animal in the phylum Mollusca, which includes snails, clams, tusk shells, and several other classes...

s. Conchology is one aspect of malacology
Malacology
Malacology is the branch of invertebrate zoology which deals with the study of the Mollusca , the second-largest phylum of animals in terms of described species after the arthropods. Mollusks include snails and slugs, clams, octopus and squid, and numerous other kinds, many of which have shells...

, the study of molluscs, however malacology studies molluscs as whole organisms, not just their shells. Conchology pre-dated malacology as a field of study. It includes the study of land and freshwater mollusc shells as well as seashell
Seashell
A seashell or sea shell, also known simply as a shell, is a hard, protective outer layer created by an animal that lives in the sea. The shell is part of the body of the animal. Empty seashells are often found washed up on beaches by beachcombers...

s. In addition to a shell, some gastropods have an operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...

 which may also be studied as part of conchology.

Conchology is now sometimes seen as an archaic study, because relying on only one aspect of an organism's morphology
Morphology (biology)
In biology, morphology is a branch of bioscience dealing with the study of the form and structure of organisms and their specific structural features....

 can be misleading. However, a shell often gives at least some insight into molluscan taxonomy
Taxonomy
Taxonomy is the science of identifying and naming species, and arranging them into a classification. The field of taxonomy, sometimes referred to as "biological taxonomy", revolves around the description and use of taxonomic units, known as taxa...

, and historically the shell was often the only part of exotic species that was available for study. Even in current museum collections it is common for the dry material (shells) to greatly exceed the amount of material that is preserved whole in alcohol.

Conchologists mainly deal with four molluscan orders: the gastropods (snails), bivalves (clams), Polyplacophora (chitons) and Scaphopoda (tusk shells). Cephalopod
Cephalopod
A cephalopod is any member of the molluscan class Cephalopoda . These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, and a set of arms or tentacles modified from the primitive molluscan foot...

s only have small internal shells, with the exception of the Nautiloidea. Some groups, such as the sea slug nudibranch
Nudibranch
A nudibranch is a member of what is now a taxonomic clade, and what was previously a suborder, of soft-bodied, marine gastropod mollusks which shed their shell after their larval stage. They are noted for their often extraordinary colors and striking forms...

s, have lost their shells altogether, while in others it has been replaced by a protein
Protein
Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups of...

 support structure.

Shell collecting versus conchology

The terms shell collector and conchologist can be regarded as two distinct categories. Not all shell collectors are conchologists; some are primarily concerned with the aesthetic value of shells instead of their scientific study. It is also true that not all conchologists are shell collectors; this type of research only requires access to private or institutional shell collections. There is some debate in the conchological community, with some people regarding all shell collectors (regardless of motivation) as conchologists.

History of conchology

Molluscs have probably been used by primate
Primate
A primate is a mammal of the order Primates , which contains prosimians and simians. Primates arose from ancestors that lived in the trees of tropical forests; many primate characteristics represent adaptations to life in this challenging three-dimensional environment...

s as a food source long before human
Human
Humans are the only living species in the Homo genus...

s evolved. Shell collecting, the precursor of conchology, probably goes back as far as there have been humans living near beaches.

Stone Age
Stone Age
The Stone Age is a broad prehistoric period, lasting about 2.5 million years , during which humans and their predecessor species in the genus Homo, as well as the earlier partly contemporary genera Australopithecus and Paranthropus, widely used exclusively stone as their hard material in the...

 seashell necklaces have been found, sometimes in areas far from the ocean, indicating that they were traded. Shell jewellery
Jewellery
Jewellery or jewelry is a form of personal adornment, such as brooches, rings, necklaces, earrings, and bracelets.With some exceptions, such as medical alert bracelets or military dog tags, jewellery normally differs from other items of personal adornment in that it has no other purpose than to...

 is found at almost all archaeological sites, including at ancient Aztec
Aztec
The Aztec people were certain ethnic groups of central Mexico, particularly those groups who spoke the Nahuatl language and who dominated large parts of Mesoamerica in the 14th, 15th and 16th centuries, a period referred to as the late post-classic period in Mesoamerican chronology.Aztec is the...

 ruins, digs in ancient China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

, and the Indus Valley
Indus Valley Civilization
The Indus Valley Civilization was a Bronze Age civilization that was located in the northwestern region of the Indian subcontinent, consisting of what is now mainly modern-day Pakistan and northwest India...

.

During the Renaissance
Renaissance
The Renaissance was a cultural movement that spanned roughly the 14th to the 17th century, beginning in Italy in the Late Middle Ages and later spreading to the rest of Europe. The term is also used more loosely to refer to the historical era, but since the changes of the Renaissance were not...

 people began taking interest in natural objects of beauty to put in cabinets of curiosities
Cabinet of curiosities
A cabinet of curiosities was an encyclopedic collection in Renaissance Europe of types of objects whose categorical boundaries were yet to be defined. They were also known by various names such as Cabinet of Wonder, and in German Kunstkammer or Wunderkammer...

. Because of their attractiveness, variety, durability and ubiquity, shells became a large part of these collections. Towards the end of the 17th century, people began looking at shells with scientific interest. Martin Lister
Martin Lister
Martin Lister FRS was an English naturalist and physician.-Life:Lister was born at Radcliffe, near Buckingham, the son of Sir Martin Lister MP for Brackley in the Long Parliament and his wife Susan Temple daughter of Sir Alexander Temple. Lister was connected to a number of well known individuals...

 in 1685-1692 published Historia Conchyliorum, which was the first comprehensive conchological text, having over 1000 engraved plate
Intaglio (printmaking)
Intaglio is a family of printmaking techniques in which the image is incised into a surface, known as the matrix or plate, and the incised line or area holds the ink. Normally, copper or zinc plates are used as a surface, and the incisions are created by etching, engraving, drypoint, aquatint or...

s.

George Rumpf, or Rumphius, (1627–1702) published the first mollusc taxonomy. He suggested "single shelled ones" (Polyplacophora, limpet
Limpet
Limpet is a common name for a number of different kinds of saltwater and freshwater snails ; it is applied to those snails that have a simple shell which is more or less conical in shape, and either is not spirally coiled, or appears not to be coiled in the adult snails.The name limpet is most...

s, and abalone
Abalone
Abalone , from aulón, are small to very large-sized edible sea snails, marine gastropod molluscs in the family Haliotidae and the genus Haliotis...

), "snails or whelks" (Gastropoda
Gastropoda
The Gastropoda or gastropods, more commonly known as snails and slugs, are a large taxonomic class within the phylum Mollusca. The class Gastropoda includes snails and slugs of all kinds and all sizes from microscopic to quite large...

), and "two-shelled ones" (Bivalvia
Bivalvia
Bivalvia is a taxonomic class of marine and freshwater molluscs. This class includes clams, oysters, mussels, scallops, and many other families of molluscs that have two hinged shells...

). Many of Rumpf's terms were adopted by Carolus Linnaeus
Carolus Linnaeus
Carl Linnaeus , also known after his ennoblement as , was a Swedish botanist, physician, and zoologist, who laid the foundations for the modern scheme of binomial nomenclature. He is known as the father of modern taxonomy, and is also considered one of the fathers of modern ecology...

. Rumpf continued to do important scientific work after he went blind, working by touch.

The study of zoology
Zoology
Zoology |zoölogy]]), is the branch of biology that relates to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct...

, including conchology, was revolutionized by Swedish naturalist
Naturalist
Naturalist may refer to:* Practitioner of natural history* Conservationist* Advocate of naturalism * Naturalist , autobiography-See also:* The American Naturalist, periodical* Naturalism...

 Carolus Linnaeus and his system of binomial nomenclature
Binomial nomenclature
Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages...

. 683 of the 4000 or so animal species he described are now considered to be molluscs, although Linnaeus placed them in several phyla at the time.

There have been many prominent conchologists in the past two centuries. The Sowerby family were famous collectors, dealers, and illustrators. John Mawe
John Mawe
John Mawe was a British mineralogist who became well known for his practical approach to the discipline.-Biography:Mawe was born in Derby in 1764 to Samuel Maw. His mother died when he was ten and he was raised by his father's second wife, Francis . In early life he appears to have spent fifteen...

 (1764–1829) produced arguably the first conchology guidebook, The Voyager's Companion or Shell-Collector's Pilot as well as The Linnæan System of Conchology. Hugh Cuming
Hugh Cuming
Hugh Cuming was an English collector who was interested in natural history, particularly in conchology and botany. He has been described as the "Prince of Collectors"....

 (1791–1865) is famous for his huge collection and numerous discoveries of new species. Thomas Say
Thomas Say
Thomas Say was an American naturalist, entomologist, malacologist, herpetologist and carcinologist. A taxonomist, he is often considered to be the father of descriptive entomology in the United States. He described more than 1,000 new species of beetles and over 400 species of insects of other...

 wrote the fundamental work American Conchology, or Descriptions of the Shells of North America, Illustrated From Coloured Figures From Original Drawings, Executed from Nature in six volumes (1830–1834).

R. Tucker Abbott
R. Tucker Abbott
Robert Tucker Abbott was an American conchologist and malacologist . He was the author of more than 30 books on malacology, which have been translated into many languages....

 was the most prominent conchologist of the 20th century. He authored dozens of books and was museum director of the Bailey-Matthews Shell Museum
Bailey-Matthews Shell Museum
The Bailey-Matthews Shell Museum is a museum of seashells and conchology located in the city of Sanibel, Florida on Sanibel Island on the Gulf coast of Southwest Florida...

, bringing the world of seashells to the public. His most prominent works are American Seashells, Seashells of the World, and The Kingdom of the Seashell.

Many of the finest collections of seashells are private. John DuPont and Jack Lightbourne are known for their extensive collections. John DuPont donated his shell collection to the Delaware Museum of Natural History
Delaware Museum of Natural History
The Delaware Museum of Natural History was founded in 1957 by John Eleuthere du Pont near Greenville, Delaware and opened in 1972. It is known for its extensive collections of seashells, birds, and bird eggs. It is the oldest natural history museum in Delaware....

 in 1984. Emperor Hirohito
Hirohito
, posthumously in Japan officially called Emperor Shōwa or , was the 124th Emperor of Japan according to the traditional order, reigning from December 25, 1926, until his death in 1989. Although better known outside of Japan by his personal name Hirohito, in Japan he is now referred to...

 of Japan also amassed a huge collection, and was a competent and respected amateur conchologist.

Museums

Many museums worldwide contain very large and scientifically-important mollusc collections. However in most cases these are research collections, behind the scenes of the museum, and thus not readily accessible to the general public in the same way that exhibits are.

The largest assemblage of mollusc shells is housed at the Smithsonian Institution
Smithsonian Institution
The Smithsonian Institution is an educational and research institute and associated museum complex, administered and funded by the government of the United States and by funds from its endowment, contributions, and profits from its retail operations, concessions, licensing activities, and magazines...

 which has millions of lots representing perhaps 50,000 species, versus about 35,000 species for the largest private collections.

In the USA

  • National Museum of Natural History
    National Museum of Natural History
    The National Museum of Natural History is a natural history museum administered by the Smithsonian Institution, located on the National Mall in Washington, D.C., United States. Admission is free and the museum is open 364 days a year....

    , Washington D.C. - The Smithsonian Museum of Natural History has one of, if not the, finest shell collection in the world
  • Academy of Natural Sciences
    Academy of Natural Sciences
    The Academy of Natural Sciences of Drexel University, formerly Academy of Natural Sciences of Philadelphia, is the oldest natural science research institution and museum in the New World...

    , Philadelphia
  • American Museum of Natural History
    American Museum of Natural History
    The American Museum of Natural History , located on the Upper West Side of Manhattan in New York City, United States, is one of the largest and most celebrated museums in the world...

    , New York
    New York
    New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

  • Museum of Comparative Zoology
    Museum of Comparative Zoology
    The Museum of Comparative Zoology, full name "The Louis Agassiz Museum of Comparative Zoology", often abbreviated simply to "MCZ", is a zoology museum located on the grounds of Harvard University in Cambridge, Massachusetts. It is one of three museums which collectively comprise the Harvard Museum...

     at Harvard, Massachusetts
    Massachusetts
    The Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...

  • Bailey-Matthews Shell Museum
    Bailey-Matthews Shell Museum
    The Bailey-Matthews Shell Museum is a museum of seashells and conchology located in the city of Sanibel, Florida on Sanibel Island on the Gulf coast of Southwest Florida...

     in Sanibel Island
    Sanibel Island
    Sanibel Island is an island located on the Gulf coast of Florida, just offshore of Fort Myers. In 2000, it had an estimated population of 6,064 people...

    , Florida
    Florida
    Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

    : the only museum in the world dedicated entirely to shells.
  • Denver Museum of Nature & Science, Denver, Colorado
    Colorado
    Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains...

    : approximately 17,500 shell lots.

In Europe

  • Vienna
    Vienna
    Vienna is the capital and largest city of the Republic of Austria and one of the nine states of Austria. Vienna is Austria's primary city, with a population of about 1.723 million , and is by far the largest city in Austria, as well as its cultural, economic, and political centre...

     - Naturhistorisches Museum
    Naturhistorisches Museum
    The Naturhistorisches Museum Wien or NHMW is a large museum located in Vienna, Austria.The collections displayed cover , and the museum has a website providing an overview as a video virtual tour....

  • Paris
    Paris
    Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

     - Muséum national d'Histoire naturelle
    Muséum national d'histoire naturelle
    The Muséum national d'Histoire naturelle is the National Museum of Natural History in Paris, France.- History :The museum was formally founded on 10 June 1793, during the French Revolution...

  • Berlin
    Berlin
    Berlin is the capital city of Germany and is one of the 16 states of Germany. With a population of 3.45 million people, Berlin is Germany's largest city. It is the second most populous city proper and the seventh most populous urban area in the European Union...

     - Humboldt Museum
    Humboldt Museum
    The Museum für Naturkunde, officially the ' or Naturkundemuseum , occasionally known as the Humboldt Museum, is a natural history museum in Berlin, Germany. Usually the museum's name is abbreviated MFN...

  • London
    London
    London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

     - Natural History Museum
    Natural History Museum
    The Natural History Museum is one of three large museums on Exhibition Road, South Kensington, London, England . Its main frontage is on Cromwell Road...

  • Manchester
    Manchester
    Manchester is a city and metropolitan borough in Greater Manchester, England. According to the Office for National Statistics, the 2010 mid-year population estimate for Manchester was 498,800. Manchester lies within one of the UK's largest metropolitan areas, the metropolitan county of Greater...

     - the Manchester Museum
    Manchester Museum
    The Manchester Museum is owned by the University of Manchester. Sited on Oxford Road at the heart of the university's group of neo-Gothic buildings, it provides access to about six million items from every continent and serves both as a resource for academic research and teaching and as a regional...

     has the fourth largest mollusc collection in Britain with 166,000 lots.
  • Brussels
    Brussels
    Brussels , officially the Brussels Region or Brussels-Capital Region , is the capital of Belgium and the de facto capital of the European Union...

     - Royal Belgian Institute of Natural Sciences
    Royal Belgian Institute of Natural Sciences
    The Royal Belgian Institute of Natural Sciences is a museum in the Belgian capital of Brussels dedicated to natural history. Its most important pieces are 30 fossilized Iguanodon skeletons, which were discovered in 1878 in Bernissart. The dinosaur hall of the museum is the world's largest museum...

    , one of the three largest collections
  • Leiden - Natural History Museum, Leiden
  • Sweden
    Sweden
    Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

     - Swedish Museum of Natural History
    Swedish Museum of Natural History
    The Swedish Museum of Natural History , in Stockholm, is one of two major museums of natural history in Sweden, the other one being located in Gothenburg....


Organizations

Like other scientific fields, conchologists have a number of local, national, and international organizations. There are also many organizations specializing in specific subareas.
  • Conchologists of America
  • Conchological Society of Great Britain and Ireland
  • Club Conchylia, the German/Austrian Society for Shell Collecting
  • Belgian Society for Conchology
  • Conquiliologistas do Brasil
    Conquiliologistas do Brasil
    Conquiliologistas do Brasil is an association created on September 19, 1989, in São Paulo, Brazil, with the main goal of spreading and increasing conchology, the study of mollusc shells....


Fake shells

Shell collectors who purchase shells from dealers may sometimes encounter shells which have been altered to represent new species or rare color varieties. It is claimed that in previous centuries, fake examples of Epitonium scalare
Epitonium scalare
Epitonium scalare, common name the precious wentletrap, is a predatory or ectoparasitic species of marine gastropod with an operculum, in the family Epitoniidae, the wentletraps....

were created out of rice paste
Wheatpaste
Wheatpaste is a liquid adhesive made from vegetable starch and water. It has been used since ancient times for various arts and crafts such as book binding, decoupage, collage, and papier-mâché...

.

Depictions of shells on stamps and coins

Shells have been featured on over 5,000 postage stamp
Postage stamp
A postage stamp is a small piece of paper that is purchased and displayed on an item of mail as evidence of payment of postage. Typically, stamps are made from special paper, with a national designation and denomination on the face, and a gum adhesive on the reverse side...

s worldwide.

Shells have also been featured on many coins, including the Bahamian dollar
Bahamian dollar
The dollar has been the currency of The Bahamas since 1966. It is normally abbreviated with the dollar sign $, or alternatively B$ to distinguish it from other dollar-denominated currencies. It is divided into 100 cents....

 (1974), the Cuban peso
Cuban peso
The peso is one of two official currencies in use in Cuba, the other being the convertible peso...

 (1981), the Haitian gourde
Haitian gourde
- Banknotes :In 1875, banknotes were issued by the "National Bank of Haiti" in denominations of 25 centimes, 1 and 5 piastres . Following this, banknotes were issued in denominations ranging from 10 centimes to 5 gourdes by the various Haitian governments until 1916, when the "National Bank of the...

 (1973), the Nepalese rupee
Nepalese rupee
The rupee is the official currency of Nepal. The present rupee has the ISO 4217 code NPR and is normally abbreviated with the sign ₨. It is subdivided into 100 paisa. The issuance of the currency is controlled by the Nepal Rastra Bank...

 (1989) and Philippine peso
Philippine peso
The peso is the currency of the Philippines. It is subdivided into 100 centavos . Before 1967, the language used on the banknotes and coins was English and so "peso" was the name used...

 (1993).

External links


Conchological organizations

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