''Tryblidium'' is a paleozoic genus of Ordovician and
Silurian
The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleozo ...
monoplacophora
Monoplacophora , meaning "bearing one plate", is a polyphyletic superclass of molluscs with a cap-like shell inhabiting deep sea environments . Extant representatives were not recognized as such until 1952; previously they were known only from ...
patella
The patella, also known as the kneecap, is a flat, rounded triangular bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint. The patella is found in many tetrapods, such as m ...
.
Species
Species in the genus ''Tryblidium'' include:''Tryblidium''
The Paleobiology Database
The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms.
History
The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ...
, accessed 22 August 2009.
* ''
Tryblidium acutum
''Tryblidium'' is a paleozoic genus of Ordovician and Silurian monoplacophorans.
The name of a biological genus, generic name comes from the Greek language, Greek (τρυβλίον), which means patella.
Species
Species in the genus ''Tryblid ...
Tryblidium reticulatum
''Tryblidium reticulatum'' is an extinct species of a paleozoic Silurian monoplacophoran.
This species have been discovered and originally described by Gustaf Lindström from Silurian of Gotland in Sweden in 1880. It lived in shallow water.
Sh ...
Tryblidium simplex
''Tryblidium'' is a paleozoic genus of Ordovician and Silurian monoplacophorans.
The generic name comes from the Greek (τρυβλίον), which means patella.
Species
Species in the genus ''Tryblidium'' include:Tryblidium thorsteinssoni
''Tryblidium'' is a paleozoic genus of Ordovician and Silurian monoplacophorans.
The generic name comes from the Greek (τρυβλίον), which means patella.
Species
Species in the genus ''Tryblidium'' include:Pilina esthonum
''Pilina'' is an extinct genus of paleozoic monoplacophorans in the family Tryblidiidae.
Species
Species in the genus ''Pilina'' include:
* ''Pilina acuminatum'' Perner (in Koken & Perner), 1925
* '' Pilina cheyennica'' Peel, 1977 - from Ordovici ...
''.
* ''Tryblidium radiatum'' is a synonym for ''
Helcionopsis radiatum
''Helcionopsis radiatum'' is an extinct species of paleozoic monoplacophoran in the family Tryblidiidae.
This species was first named as ''Tryblidium radiatum'' and described from Silurian in crystalline limestone of Wialmsudd near Fårösund i ...
''.
* ''Tryblidium unguis'' is a synonym for ''
Pilina unguis
''Pilina unguis'' is an extinct species of Paleozoic Silurian monoplacophoran. It was first named as ''Tryblidium unguis'' and described by Gustaf Lindström in Latin from the Silurian deposits of Gotland in Sweden, in 1880.
Shell description ...