Isognomon

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(For the tree oyster mushroom, see Pleurotus ostreatus .)

Contents

Isognomon
Temporal range: Permian - Recent
Tide pool shells in Kona 2.jpg
Live Isognomon sp. under a rock in Kona District, Hawaii
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Pteriida
Family: Isognomonidae
Genus: Isognomon
Lightfoot, 1786
Type species
Ostrea perna
Linnaeus, 1767
Species

See text

Synonyms
  • IsognomaLightfoot, 1786(Isognoma is an alternative original spelling for Isognomon)
  • Isognomon (Anisoperna)Iredale, 1939
  • Isognomon (Isognomon)Lightfoot, 1786
  • Isognomon (Melina)Philipsson, 1788
  • IsogonumRöding, 1798
  • MalleopernaIredale, 1939
  • MelinaPhilipsson, 1788
  • ParvipernaIredale, 1939
  • PedalionDillwyn, 1817
  • PernaBruguière, 1789
  • PernariaRafinesque, 1815
  • SuturaMegerle von Mühlfeld, 1811

Isognomon is a genus of marine bivalve mollusks which is related to the pearl oysters. [1]

Isognomon is known in the fossil record from the Permian period to the Quaternary period (age range: 254.0 to 0.012 million years ago). Fossils of species within this genus have been found all over the world. [2]

Taxonomy

This genus is placed in the family Isognomonidae. However previous molecular phylogeny studies have shown that these tree oysters belong in the family Pteriidae. [3] [4]

Description

These oysters grow to be about 4.75 inches (12.1 cm) in overall length, producing a highly irregular shell with a blue-gray and often heavily encrusted exterior but a smooth and pearly white interior. They use their byssus to completely immobilize themselves to the roots of mangrove trees, corals, and other substrates. [5] It is because of the preference for mangroves that these are sometimes called tree oysters [6]

Species

Extinct species

Fossil of Isognomon maxillatus from Pliocene of Italy Pteriidae - Isognomon maxillatus.JPG
Fossil of Isognomon maxillatus from Pliocene of Italy

Extinct species within this genus include: [2]

Species brought into synonymy

Related Research Articles

<i>Ostrea</i> Genus of bivalves

Ostrea is a genus of edible oysters, marine bivalve mollusks in the family Ostreidae, the oysters.

<i>Mactra</i> Genus of bivalves

Mactra is a large genus of medium-sized marine bivalve mollusks or clams, commonly known as trough shells or duck clams. Mactra is the type genus within the family Mactridae.

Plicatulidae Family of bivalves

The Plicatulidae are a family of saltwater clams, marine bivalve mollusks, known commonly as kitten's paws or kittenpaws. These bivalves are related to oysters and scallops. The family has a single living genus, Plicatula, with a second, Harpax known from fossils.

Isognomonidae Family of molluscs

Isognomonidae is a family of medium-sized to large saltwater clams. They are pearl oysters, marine bivalve molluscs in the superfamily Pterioidea

Rock oyster Genus of bivalves

Rock oysters are true oysters of the genus Saccostrea, belonging to the subfamily Saccostreinae of the family Ostreidae.

Chamidae Family of molluscs

Chamidae, common name the jewel boxes or jewel box clams, is a taxonomic family of saltwater clams, the marine bivalve mollusks in the order Venerida.

<i>Pinna</i> (bivalve) Genus of bivalves

Pinna is a genus of bivalve molluscs belonging to the family Pinnidae.

<i>Argopecten</i> Genus of bivalves

Argopecten is a genus of saltwater clams, or scallops, marine bivalve mollusks in the family Pectinidae.

<i>Patella</i> (gastropod) Genus of gastropods

Patella is a genus of sea snails with gills, typical true limpets, marine gastropod mollusks in the family Patellidae, the true limpets.

<i>Pterygia</i> (gastropod) Genus of gastropods

Pterygia is a genus of sea snails, marine gastropod mollusks in the subfamily Cylindromitrinae of the family Mitridae.

<i>Hyotissa</i> Genus of bivalves

Hyotissa is a genus of large saltwater oysters, marine bivalve mollusks in the family Gryphaeidae.

<i>Perna</i> (bivalve) Genus of bivalves

Perna is a genus of mussels, marine bivalve molluscs in the family Mytilidae.

<i>Pitar</i> Genus of bivalves

Pitar is a genus of saltwater clams, marine bivalve molluscs in the subfamily Callocardiinae of the family Veneridae, the Venus clams. The genus contains over 60 species.

<i>Plicatula</i> Genus of bivalves

Plicatula is a genus of saltwater clams, marine bivalve molluscs, known commonly as kitten's paws or kittenpaws in the family Plicatulidae.

<i>Pholas</i> Genus of bivalves

Pholas is a taxonomic genus of marine bivalve molluscs in the subfamily Pholadinae of the family Pholadidae.

<i>Sanguinolaria</i> Genus of bivalves

Sanguinolaria is a genus of saltwater clams, marine bivalve molluscs of the family Psammobiidae.

<i>Chama</i> (bivalve) Genus of bivalves

Chama is a genus of cemented saltwater clams, marine bivalve molluscs in the family Chamidae, the jewel boxes.

<i>Malleus</i> (bivalve) Genus of bivalves

Malleus is a genus of hammer oysters in the family Malleidae. This genus includes 27 known species.

References

  1. ↑ Isognomon Lightfoot, 1786 . Retrieved through: World Register of Marine Species  on 12 March 2011.
  2. 1 2 Fossilworks
  3. ↑ Temkin, I. (2010) Molecular phylogeny of pearl oysters and their relatives (Mollusca, Bivalvia, Pterioidea), BMC Evolutionary Biology 10:342
  4. ↑ Coan, E. V.; Valentich-Scott, P. (2012). Bivalve seashells of tropical West America. Marine bivalve mollusks from Baja California to northern Peru. 2 vols, 1258 pp
  5. ↑ Arthur Peter Hoblyn Oliver (2004). Guide to Seashells of the World . Firefly. p.  300. ISBN   978-1-55297-943-3.
  6. ↑ Papuaweb Archived 2012-10-17 at the Wayback Machine
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