Tortworth Inlier (Silurian of the United Kingdom)

Also known as Tortworth Inlier, Gloucestershire, Damery Beds

Where: England, United Kingdom (51.9° N, 2.2° W: paleocoordinates 32.7° S, 14.6° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Monoclimacis griestoniensis graptolite zone, Damery Beds Formation, Telychian (438.5 - 433.4 Ma)

• Graptolite zone from Ebbestad & Gutierrez-Marco (2017)

• group of beds-level stratigraphic resolution

Environment/lithology: shoreface; gray, green, red sandstone and gray siltstone

• BA 2 - taken from Cockes et al 2003.
• ...layers of fine-grained sandstone alternating with siltstones, mudstones and shales. The fine-greained sandstone bands are generally not more than a few inches thick, and are often seen to wedge out laterally. The sandstones are hard and in places micaceous, and they break into flaggy, blocky and irregluar pieces. The siltstones, mudstones and shales are soft and weather easily. Calcareous bands, a few inches thick, are common in the sandstones, and are usually crowded with fossils. The sandstones are generally grey, greenish-grey, red or purple, and the shales are mostly grey or purplish-grey.

Size class: macrofossils

Primary reference: M.L.K. Curtis. 1972. The Silurian rocks of the Tortworth Inlier, Gloucestershire. Proceedings of the Geologists' Association 83(1):1-35 [M. Patzkowsky/Z. Krug/Z. Krug]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 49635: authorized by Mark Patzkowsky, entered by Zack Krug on 21.04.2005, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• The list is for the Damery Beds of the Tortworh is the combination of several localities around this area.
 Phacopida - Phacopidae
"Phacops cf. orestes" = Acernaspis orestes
"Phacops cf. orestes" = Acernaspis orestes Billings 1860 trilobite
 Phacopida - Dalmanitidae
 Phacopida - Encrinuridae
 Phacopida - Calymenidae
Calymene spp. Brongniart 1822 trilobite
 Proetida - Proetidae
Proetus spp. Steininger 1831 trilobite
 Leperditicopida - Leperditiidae
Leperditia sp. Rouault 1851 ostracod
 Tentaculitida - Tentaculitidae
 Orthotetida - Chilidiopsidae
Coolinia pecten Linnaeus 1758
 Strophomenida - Leptostrophiidae
Brachyprion spp. Shaler 1865
Brachyprion aff. arenaceus Lamont and Gilbert 1945
"Leptostrophia compressa" = Brachyprion compressa de Sowerby and Murchison 1839
 Strophomenida - Rafinesquinidae
 Strophomenida - Strophonellidae
 Strophomenida - Strophomenidae
Katastrophomena aff. antiquata de Sowerby and Murchison 1839
 Strophomenida - Eopholidostrophiidae
"Pholidostrophia salopiensis" = Mesopholidostrophia salopiensis
"Pholidostrophia salopiensis" = Mesopholidostrophia salopiensis Cocks 1967
 Dictyonellida - Eichwaldiidae
"Dictyonella capewelli" = Eodictyonella
"Dictyonella capewelli" = Eodictyonella
 Athyridida - Meristellidae
 Spiriferida - Cyrtiidae
"Cyrtia exporrecta" = Cyrtia exporrectus, Eospirifer radiatus
"Cyrtia exporrecta" = Cyrtia exporrectus Wahlenberg 1818
Eospirifer radiatus Sowerby 1834
 Spiriferida - Delthyrididae
Howellella spp. Kozlowski 1946
Howellella anglica Lamont and Gilbert 1945
 Pentamerida - Clorindidae
"Clorinda undata" = Clorilamnulella undata
"Clorinda undata" = Clorilamnulella undata de Sowerby and Murchison 1839
 Pentamerida - Stricklandiidae
Stricklandia lens Sowerby 1839
 Pentamerida - Pentameridae
 Atrypida - Atrypidae
Atrypa reticularis Linnaeus 1758
 Atrypida - Atrypinidae
"Atrypina cf. barrandei" = Atrypina barrandii
"Atrypina cf. barrandei" = Atrypina barrandii Davidson 1848
 Rhynchonellida - Machaerariidae
 Rhynchonellida - Leptocoeliidae
Eocoelia curtisi Ziegler 1966
 Rhynchonellida - Camarotoechiidae
 Rhynchonellida - Hebetoechiidae
 Orthida - Rhipidomellidae
Mendacella phiala Whittard and Barker 1950
Mendacella lata Whittard and Barker 1950
 Orthida - Dalmanellidae
 Orthida - Hesperorthidae
Dolerorthis sp. Schuchert and Cooper 1931
 Lingulida - Disciniidae
"Orbiculoidea cf. forbesi" = Orbiculoidea forbesa
"Orbiculoidea cf. forbesi" = Orbiculoidea forbesa Davidson 1848
 Lingulida - Lingulidae
 Trimerellida - Trimerellidae
 Craniopsida - Craniopsidae
 Craniida - Craniidae
 Modiomorphida - Modiomorphidae
Modiolopsis spp. Hall 1847 clam
 Pholadomyida - Edmondiidae
 Protobranchia - Ctenodontidae
 Euomphalina - Euomphalidae
"Gyronema octavium" = Poleumita octavia
"Gyronema octavium" = Poleumita octavia d'Orbigny 1850 snail
 Euomphalina - Platyceratidae
Platyceras spp. Conrad 1840 snail
Cyclonema sp. Hall 1852 snail
 Euomphalina - Oriostomatidae
"Poleumita globosa" = Oriostoma globosum
"Poleumita globosa" = Oriostoma globosum von Schlotheim 1820 snail
 Bellerophontida -
Bellerophontoidea indet. M'Coy 1851 snail
 Bellerophontida - Pterothecidae
Pterotheca avirostris Huxley and Etheridge 1865 snail
 Murchisoniina - Eotomariidae
Liospira cf. cornovica Pitcher 1939 snail
 Murchisoniina - Trochonematidae
Trochonema cf. valenticum Pitcher 1939 snail
 Murchisoniina - Murchisoniidae
Murchisonia sp. d'Archiac and de Verneuil 1841 snail
 Murchisoniina - Loxonematidae
Loxonema cf. fasciatum, "Loxonema cf. cancellatum" = Rhabdostropha cancellata
Loxonema cf. fasciatum Lindström 1884 snail
"Loxonema cf. cancellatum" = Rhabdostropha cancellata de Sowerby and Murchison 1839 snail
 Cornulitida - Cornulitidae
 Orthocerida - Orthoceratidae
Orthoceras spp. Breynius 1832
 Barrandeocerida - Lechritrochoceratidae
Lechritrochoceras sp. Foerste 1926
 Actinocerida - Armenoceratidae
"Orthoceras subconicum" = Armenoceras subconicum
"Orthoceras subconicum" = Armenoceras subconicum d'Orbigny 1850
 Oncocerida -
 Cryptostomata - Ptilodictyidae
Ptilodictya lanceolata Goldfuss 1829
Crinoidea indet. Miller 1821 Sea lily
 Monobathrida - Hapalocrinidae
Hapalocrinus sp. Jaekel 1895 Sea lily
 Favositida - Favositidae
Favosites gothlandicus Lamarck 1816 tabulate coral
 Cystiphyllida - Goniophyllidae
 Cystiphyllida - Palaeocyclidae
Rhabdocyclus spp. Lang and Smith 1939 horn coral
 Stauriida - Streptelasmatidae
 Stauriida - Lykophyllidae
Phaulactis spp. Ryder 1926 horn coral