Upper Flaxley Beds at May Hill inlier (Silurian to of the United Kingdom)

Where: Wales, United Kingdom (52.0° N, 2.0° W: paleocoordinates 26.1° S, 11.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Upper Flaxley Beds Formation, Ludlow to Ludlow (427.4 - 421.3 Ma)

• Listed as Ludlovian/Eltonian

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, silty, calcareous mudstone and lithified limestone

• Grayish olive calcareous silty mudstones and siltstones with lesser limestone bands and nodules

Size classes: macrofossils, mesofossils

Primary reference: J. D. Lawson. 1955. The geology of the May Hill Inlier. Quarterly Journal of the Geological Society of London 111:85-116 [P. Novack-Gottshall/P. Novack-Gottshall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 74760: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 28.08.2007, edited by Phil Novack-Gottshall

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
  -
Anthozoa indet. Ehrenberg 1834
"Common"
Anthozoa "scolecoid" Ehrenberg 1834
"scolecoid simple corals"
 Favositida - Favositidae
Favosites sp. Lamarck 1816 tabulate coral
"Fairly common"
 Auloporida - Auloporidae
Aulopora sp. Goldfuss 1829 tabulate coral
"Present"
 Heliolitida - Halysitidae
Halysites sp. von Waldheim 1813 tabulate coral
"Present"
 Heliolitida - Heliolitidae
Heliolites sp. Dana 1846 tabulate coral
"Present"
Pterobranchia
 Graptoloidea - Monograptidae
Monograptus sp. graptolite
"Present"
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
"Fairly common"
Lophophorata
 Tentaculitida - Tentaculitidae
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
"Polyzoan" "Present"
Stenolaemata
 Cryptostomata - Ptilodictyidae
Ptilodictya lanceolata Goldfuss 1829
"Present"
Rhynchonellata
 Spiriferida - Delthyrididae
Delthyris elegans Muir-Wood 1925
"Fairly common"
 Spiriferida - Cyrtiidae
Eospirifer cf. radiatus Sowerby 1834
"Present"
 Atrypida - Atrypidae
Atrypa reticularis Linnaeus 1758
"Fairly common"
 Orthida - Dalmanellidae
Dalmanella orbicularis, "Parmorthis cf. elegantula" = Resserella
"Parmorthis cf. elegantula" = Resserella
"Fairly common"
 Orthida - Hesperorthidae
Ptychopleurella bouchardi Davidson 1847
"Present"
 Pentamerida - Gypidulidae
Gypidula sp. Hall 1867
"Fairly common"
 Rhynchonellida - Trigonirhynchiidae
"Camarotoechia nucula" = Microsphaeridiorhynchus nucula
"Camarotoechia nucula" = Microsphaeridiorhynchus nucula Sowerby 1839
"Fairly common"
 Rhynchonellida - Hebetoechiidae
Sphaerirhynchia (Wilsonia) wilsoni de Sowerby 1816
"Fairly common"
Strophomenata
 Strophomenida - Chonetidae
Chonetes lepismus
"Fairly common"
 Strophomenida - Sowerbyellidae
"Plectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis
"Plectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis Wahlenberg 1818
"Present"
 Strophomenida - Aegiromenidae
Chonetoidea grayi
"Fairly common"
 Strophomenida - Amphistrophiidae
"Strophonella funiculata" = Amphistrophiella funiculata
"Strophonella funiculata" = Amphistrophiella funiculata M'Coy 1846
"Fairly common"
 Strophomenida - Shaleriidae
"Shaleria (Brachyprion) aff. ornatella" = Shaleria (Janiomya) ornatella
"Shaleria (Brachyprion) aff. ornatella" = Shaleria (Janiomya) ornatella Davidson 1871
"Fairly common"
 Strophomenida - Leptostrophiidae
"Leptostrophia filosa" = Mesoleptostrophia filosa
"Leptostrophia filosa" = Mesoleptostrophia filosa Sowerby 1839
"Common"
 Strophomenida - Strophonellidae
"Strophonella euglypha" = Strophoprion euglypha
"Strophonella euglypha" = Strophoprion euglypha Dalman 1828
"Fairly common"
 Strophomenida - Rafinesquinidae
Leptaena rhomboidalis Wahlenberg 1818
"Present"
 Orthotetida - Chilidiopsidae
"Fardenia (Schuchertella) pecten" = Coolinia pecten
"Fardenia (Schuchertella) pecten" = Coolinia pecten Linnaeus 1758
"Present"
Craniata
 Craniopsida - Craniopsidae
Bivalvia
 Modiomorphida - Cypricardiniidae
Cypricardinia planulata Conrad 1842 clam
"Present"
Cephalopoda
 Orthocerida - Kionoceratidae
 Orthocerida - Dawsonoceratidae
Dawsonoceras cf. annulatum Sowerby 1818
"Present"
Gastropoda
 Euomphalina - Oriostomatidae
"Poleumita (Horiostoma) globosa" = Oriostoma globosum
"Poleumita (Horiostoma) globosa" = Oriostoma globosum von Schlotheim 1820 snail
"Fairly common"
 Murchisoniina - Loxonematidae
"Loxonema cf. sinuosa" = Loxonema sinuosum
"Loxonema cf. sinuosa" = Loxonema sinuosum de Sowerby and Murchison 1839 snail
"Present"
Ostracoda
 Palaeocopida - Beyrichiidae
Beyrichia maccoyana ostracod
"Fairly common"
Trilobita
 Phacopida - Dalmanitidae
Dalmanites vulgaris trilobite
"Fairly common"
 Phacopida - Calymenidae
Calymene sp. Brongniart 1822 trilobite
"Present"
 Phacopida - Encrinuridae
Encrinurus sp. Emmrich 1844 trilobite
"Present"