''Plagiostoma'' is a
genus of fossil saltwater clams,
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
* Marine debris
* Marine habitats
* Marine life
* Marine pollution
Military
* ...
bivalve
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...
mollusks in the family
Limidae, the file clams.
Species
*''Plagiostoma aurita'' Popov 1964
*''Plagiostoma bellula'' Morris and Lycett 1853
*''Plagiostoma delettrei'' Coquand 1852
*''Plagiostoma deltoideum'' Girty 1909
*''Plagiostoma dianense'' Guo 1985
*''Plagiostoma euximium'' Bayle 1878
*''Plagiostoma gejiuense'' Guo 1985
*''Plagiostoma gigantea'' Boehm 1911
*''Plagiostoma giganteum'' Sowerby 1814
*''Plagiostoma harronis'' Dacque 1905
*''Plagiostoma hermanni'' Voltz 1830
*''Plagiostoma immensum'' Repin 2013
*''Plagiostoma inversa'' Waagen 1881
*''Plagiostoma lenaensis'' Kurushin 1998
*''Plagiostoma malinovskyi'' Bytschkov 1976
*''Plagiostoma nudum'' Parona 1889
*''Plagiostoma popovi'' Kurushin 1985
*''Plagiostoma punctatum'' Sowerby 1818
*''Plagiostoma rodburgensis'' Whidborne 1883
*''Plagiostoma semicircularis'' Goldfuss 1835
*''Plagiostoma striatum'' Schlotheim 1820
*''Plagiostoma sublaeviusculum'' Krumbeck 1905
*''Plagiostoma subsimplex'' Thomas and Peron 1891
*''Plagiostoma subvaloniense'' Krumbeck 1923
*''Plagiostoma tihensis'' Abbass 1962
[
]
Distribution
This cosmopolitan genus occurs in Mid Triassic
In the geologic timescale, the Middle Triassic is the second of three epochs of the Triassic period or the middle of three series in which the Triassic system is divided in chronostratigraphy. The Middle Triassic spans the time between Ma ...
to Upper Cretaceous strata (from 295.0 to 66.043 Ma.) [ Plagiostoma in Fossilworks]
/ref>
Description
These bivalves are epifaunal
Fauna is all of the animal life present in a particular region or time. The corresponding term for plants is ''flora'', and for fungi, it is ''funga''. Flora, fauna, funga and other forms of life are collectively referred to as '' biota''. Zool ...
byssate suspension feeders of up to 12 cm in size. The shells are obliquely ovate, moderately inflated, with obtuse posterior and smaller anterior wings.
''Plagiostoma giganteum'' is a well-known fossil bivalve which occurs in the Blue Lias formation in various parts of the United Kingdom, although it is geographically widespread and has also been found in the Triassic of the United Kingdom.fossilworks - †Plagiostoma giganteum Sowerby 1814 (file clam)
/ref>
Gallery
File: Limidae - Plagiostoma punctatum.JPG, ''Plagiostoma punctatum''
File:Plagiostoma striatum u. Trochiten 240410.jpg, ''Plagiostoma striatum''
File:Plagiostoma lineatum Obere Schaumkalkbank 040410.jpg, ''Plagiostoma lineatum''
File:Plagiostoma giganteum multiview.png, ''Plagiostoma giganteum''
References
Limidae
Prehistoric bivalve genera
Middle Triassic genus first appearances
Ladinian genera
Carnian genera
Norian genera
Rhaetian genera
Hettangian genera
Sinemurian genera
Pliensbachian genera
Toarcian genera
Aalenian genera
Bajocian genera
Bathonian genera
Callovian genera
Oxfordian genera
Kimmeridgian genera
Tithonian genera
Berriasian genera
Valanginian genera
Hauterivian genera
Barremian genera
Aptian genera
Albian genera
Cenomanian genera
Late Cretaceous genus extinctions
Fossils of Uzbekistan
Bissekty Formation
{{paleo-bivalve-stub