|
Gravicalymene
''Gravicalymene'' Shirley, 1936, is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and family Calymenidae. Species included in this genus have previously been allocated to '' Calymene'' Brongniart 1822,'' Flexicalymene'' Shirley, 1936. and '' Sthenarocalymene'' Siveter 1977. Rarest within the genus is the Middle Ordovician species ''Gravicalymene magnotuberculata'', which is also amongst the rarest of all Calymenidae and regionally confined to two exposures in New York State. ''G. magnotuberculata'' is noted for its extremely pustulose exoskeleton, bell-shaped glabella and lack of complete articulated specimens. Type species * '' Gravicalymene convolva'' Shirley 1936, by original designation. Found only in the Birdshill Limestone (Pusgillian or lowest Cautleyan Stage) at Birdshill Quarry, near Llandeilo, South Wales. Other species Some known species and locations include: * '' Gravicalymene arcuata'' Price, 1982. Rawtheyan Stage, Dolhir Formation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravicalymene Arcuata
''Gravicalymene'' Shirley, 1936, is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and family Calymenidae. Species included in this genus have previously been allocated to ''Calymene'' Brongniart 1822,''Flexicalymene'' Shirley, 1936. and '' Sthenarocalymene'' Siveter 1977. Rarest within the genus is the Middle Ordovician species ''Gravicalymene magnotuberculata'', which is also amongst the rarest of all Calymenidae and regionally confined to two exposures in New York State. ''G. magnotuberculata'' is noted for its extremely pustulose exoskeleton, bell-shaped glabella and lack of complete articulated specimens. Type species * '' Gravicalymene convolva'' Shirley 1936, by original designation. Found only in the Birdshill Limestone (Pusgillian or lowest Cautleyan Stage) at Birdshill Quarry, near Llandeilo, South Wales. Other species Some known species and locations include: * '' Gravicalymene arcuata'' Price, 1982. Rawtheyan Stage, Dolhir Formation, C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravicalymene Abbreviata
''Gravicalymene'' Shirley, 1936, is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and family Calymenidae. Species included in this genus have previously been allocated to ''Calymene'' Brongniart 1822,''Flexicalymene'' Shirley, 1936. and '' Sthenarocalymene'' Siveter 1977. Rarest within the genus is the Middle Ordovician species ''Gravicalymene magnotuberculata'', which is also amongst the rarest of all Calymenidae and regionally confined to two exposures in New York State. ''G. magnotuberculata'' is noted for its extremely pustulose exoskeleton, bell-shaped glabella and lack of complete articulated specimens. Type species * '' Gravicalymene convolva'' Shirley 1936, by original designation. Found only in the Birdshill Limestone (Pusgillian or lowest Cautleyan Stage) at Birdshill Quarry, near Llandeilo, South Wales. Other species Some known species and locations include: * ''Gravicalymene arcuata'' Price, 1982. Rawtheyan Stage, Dolhir Formation, Cy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravicalymene Truncatus
''Gravicalymene'' Shirley, 1936, is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and family Calymenidae. Species included in this genus have previously been allocated to ''Calymene'' Brongniart 1822,''Flexicalymene'' Shirley, 1936. and '' Sthenarocalymene'' Siveter 1977. Rarest within the genus is the Middle Ordovician species ''Gravicalymene magnotuberculata'', which is also amongst the rarest of all Calymenidae and regionally confined to two exposures in New York State. ''G. magnotuberculata'' is noted for its extremely pustulose exoskeleton, bell-shaped glabella and lack of complete articulated specimens. Type species * '' Gravicalymene convolva'' Shirley 1936, by original designation. Found only in the Birdshill Limestone (Pusgillian or lowest Cautleyan Stage) at Birdshill Quarry, near Llandeilo, South Wales. Other species Some known species and locations include: * ''Gravicalymene arcuata'' Price, 1982. Rawtheyan Stage, Dolhir Formation, Cy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravicalymene Magnotuberculata
''Gravicalymene'' Shirley, 1936, is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and family Calymenidae. Species included in this genus have previously been allocated to ''Calymene'' Brongniart 1822,''Flexicalymene'' Shirley, 1936. and '' Sthenarocalymene'' Siveter 1977. Rarest within the genus is the Middle Ordovician species ''Gravicalymene magnotuberculata'', which is also amongst the rarest of all Calymenidae and regionally confined to two exposures in New York State. ''G. magnotuberculata'' is noted for its extremely pustulose exoskeleton, bell-shaped glabella and lack of complete articulated specimens. Type species * '' Gravicalymene convolva'' Shirley 1936, by original designation. Found only in the Birdshill Limestone (Pusgillian or lowest Cautleyan Stage) at Birdshill Quarry, near Llandeilo, South Wales. Other species Some known species and locations include: * ''Gravicalymene arcuata'' Price, 1982. Rawtheyan Stage, Dolhir Formation, Cy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravicalymene Hagani
''Gravicalymene'' Shirley, 1936, is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and family Calymenidae. Species included in this genus have previously been allocated to ''Calymene'' Brongniart 1822,''Flexicalymene'' Shirley, 1936. and '' Sthenarocalymene'' Siveter 1977. Rarest within the genus is the Middle Ordovician species ''Gravicalymene magnotuberculata'', which is also amongst the rarest of all Calymenidae and regionally confined to two exposures in New York State. ''G. magnotuberculata'' is noted for its extremely pustulose exoskeleton, bell-shaped glabella and lack of complete articulated specimens. Type species * '' Gravicalymene convolva'' Shirley 1936, by original designation. Found only in the Birdshill Limestone (Pusgillian or lowest Cautleyan Stage) at Birdshill Quarry, near Llandeilo, South Wales. Other species Some known species and locations include: * ''Gravicalymene arcuata'' Price, 1982. Rawtheyan Stage, Dolhir Formation, Cy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravicalymene Bakeri
''Gravicalymene'' Shirley, 1936, is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and family Calymenidae. Species included in this genus have previously been allocated to ''Calymene'' Brongniart 1822,''Flexicalymene'' Shirley, 1936. and '' Sthenarocalymene'' Siveter 1977. Rarest within the genus is the Middle Ordovician species ''Gravicalymene magnotuberculata'', which is also amongst the rarest of all Calymenidae and regionally confined to two exposures in New York State. ''G. magnotuberculata'' is noted for its extremely pustulose exoskeleton, bell-shaped glabella and lack of complete articulated specimens. Type species * '' Gravicalymene convolva'' Shirley 1936, by original designation. Found only in the Birdshill Limestone (Pusgillian or lowest Cautleyan Stage) at Birdshill Quarry, near Llandeilo, South Wales. Other species Some known species and locations include: * ''Gravicalymene arcuata'' Price, 1982. Rawtheyan Stage, Dolhir Formation, Cy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravicalymene Capitovata
''Gravicalymene'' Shirley, 1936, is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and family Calymenidae. Species included in this genus have previously been allocated to ''Calymene'' Brongniart 1822,''Flexicalymene'' Shirley, 1936. and '' Sthenarocalymene'' Siveter 1977. Rarest within the genus is the Middle Ordovician species ''Gravicalymene magnotuberculata'', which is also amongst the rarest of all Calymenidae and regionally confined to two exposures in New York State. ''G. magnotuberculata'' is noted for its extremely pustulose exoskeleton, bell-shaped glabella and lack of complete articulated specimens. Type species * '' Gravicalymene convolva'' Shirley 1936, by original designation. Found only in the Birdshill Limestone (Pusgillian or lowest Cautleyan Stage) at Birdshill Quarry, near Llandeilo, South Wales. Other species Some known species and locations include: * ''Gravicalymene arcuata'' Price, 1982. Rawtheyan Stage, Dolhir Formation, Cy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravicalymene Convolva
''Gravicalymene'' Shirley, 1936, is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and family Calymenidae. Species included in this genus have previously been allocated to ''Calymene'' Brongniart 1822,''Flexicalymene'' Shirley, 1936. and '' Sthenarocalymene'' Siveter 1977. Rarest within the genus is the Middle Ordovician species ''Gravicalymene magnotuberculata'', which is also amongst the rarest of all Calymenidae and regionally confined to two exposures in New York State. ''G. magnotuberculata'' is noted for its extremely pustulose exoskeleton, bell-shaped glabella and lack of complete articulated specimens. Type species * '' Gravicalymene convolva'' Shirley 1936, by original designation. Found only in the Birdshill Limestone (Pusgillian or lowest Cautleyan Stage) at Birdshill Quarry, near Llandeilo, South Wales. Other species Some known species and locations include: * ''Gravicalymene arcuata'' Price, 1982. Rawtheyan Stage, Dolhir Formation, Cy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cynwyd Forest Quarry
Sometimes referred to in literature as 'Bwlch y Gaseg' and in very close proximity to the area named as such on OS Map (six-inch to the mile) 1888-1913, the Cynwyd Forest Quarry is a Site of Special Scientific Interest (SSSI) located aside a track within the Cynwyd Forest near Corwen , Denbighshire, North Wales. It was described by Rushton ''et al.'' (2000) and exposes Late Ordovician micaceous siltstones and mudstones of the Dolhir Formation ( Ashgill Series, Rawtheyan Stage) which yields a rich shelly (brachiopod) fauna. Trilobites are represented by several genera although the fauna is dominated by ''Gravicalymene arcuata'' Price, 1982. Bivalves, bryozoans and various Echinodermata (Crinoids and Cystoids) are also present. Examples of most of the fossils listed below are illustrated and briefly described (or remarked upon) in "Fossils of the Upper Ordovician" by Harper and Owen (Eds.).HARPER, D. A. T. and OWEN, A. W. (Eds.) 1996. Fossils of the Upper Ordovician. ''Palaeontolog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolhir Formation
The Dolhir Formation is a geologic formation in Wales. It preserves fossils dating back to the Ordovician period. See also * List of fossiliferous stratigraphic units in Wales This is a list of fossiliferous stratigraphic units in Wales. See also *Lists of fossiliferous stratigraphic units in Europe *Lists of fossiliferous stratigraphic units in the United Kingdom References * {{DEFAULTSORT:Fossiliferous ... References * Geologic formations of Wales Ordovician System of Europe Ordovician Wales Ordovician southern paleotemperate deposits {{Wales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flexicalymene
''Flexicalymene'' Shirley, 1936. is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and Family Calymenidae. ''Flexicalymene'' specimens can be mistaken for '' Calymene'', ''Gravicalymene'', '' Diacalymene'' and a few other Calymenina genera. They are used as an index fossil in the Ordovician. Ohio and North America are particularly known for being rich with ''Flexicalymene'' fossils. Diagnosis "Glabella parabolic to bell-shaped in outline, with three or four lateral lobes and furrows. Lacks buttress(es) from fixed cheek to lateral glabellar lobe(s). Does not have preglabellar field. No distinct crescentic area outside lateral lobe l p. Facial sutures gonatoparian (exceptionally, can be proparian in Flexicalymene). Genal spines absent. Hypostome without discrete protuberance on anterior lobe of median body." (Siveter, 1976, p.353) Type species * ''Flexicalymene caractaci'' ( Salter, 1865). By original designation and by monotypy, ''Calymene blumenb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calymenidae
Calymenidae is a family of trilobite Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the ...s, containing the following genera: *'' Alcymene'' *'' Apocalymene'' *'' Arcticalymene'' *'' Calymene'' *'' Calymenella'' *'' Calymenesum'' *'' Colpocoryphe'' *'' Dekalymene'' *'' Diacalymene'' *'' Flexicalymene'' *'' Gravicalymene'' *'' Limbocalymene'' *'' Linguocalymene'' *'' Liocalymene'' *'' Metacalymene'' *'' Neseuretinus'' *'' Neseuretus'' *'' Nipponocalymene'' *'' Onnicalymene'' *'' Papillicalymene'' *'' Paracalymene'' *'' Platycalymene'' *'' Pradoella'' *'' Protocalymene'' *'' Reacalymene'' *'' Reedocalymene'' *'' Salterocoryphe'' *'' Sarrabesia'' *'' Spathacalymene'' *'' Sthenarocalymene'' *'' Tapinocalymene'' *'' Thelecalymene'' *'' Vietnamia'' References Calymenina Trilobite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
