Silksworth, Durham (Howse collection) (Permian of the United Kingdom)

Where: United Kingdom (54.9° N, 1.4° W: paleocoordinates 17.4° N, 14.6° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Ford Formation, Wuchiapingian (259.9 - 254.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Howse collection, Hancock Museum, Newcastle-upon-Tyne. Specimens later figured by Davidson (1858) were as of 1963 in Geological Survey Museum, London.

Primary reference: R. Howse. 1848. A catalogue of the fossils of the Permian system of the counties of Northumberland and Durham. Transactions of the Tyneside Naturalists' Field Club 1:219-264 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 130872: authorized by Matthew Clapham, entered by Matthew Clapham on 15.07.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Nautilida - Liroceratidae
"Nautilus freieslebeni" = Peripetoceras freieslebeni
"Nautilus freieslebeni" = Peripetoceras freieslebeni Geinitz 1843 nautiloid
Gastropoda
 Neritoidea - Naticopsidae
"Littorina minima" = Naticopsis minima
"Littorina minima" = Naticopsis minima Brown 1839 snail
 Caenogastropoda - Meekospiridae
"Eulima symmetrica" = Meekospira symmetrica
"Eulima symmetrica" = Meekospira symmetrica King 1844 snail
 Euomphalina - Microdomatidae
"Littorina mancuniensis" = Tunstallia helicina
"Littorina mancuniensis" = Tunstallia helicina von Schlotheim 1820 snail
 Murchisoniina - Gosseletinidae
"Pleurotomaria sedgwickii" = Bradyospira antrina
"Pleurotomaria sedgwickii" = Bradyospira antrina von Schlotheim 1816 snail
includes var. ampullosa
Polyplacophora
 Neoloricata - Cymatochitonidae
"Chiton loftusianus" = Cymatochiton loftusianus
"Chiton loftusianus" = Cymatochiton loftusianus King 1848 chiton
Bivalvia
 Solemyida - Solemyidae
"Solenimya abnormis" = Dystactella biarmica
"Solenimya abnormis" = Dystactella biarmica de Verneuil 1845 Awning Clam
 Ostreida - Bakevelliidae
"Avicula antiqua" = Bakevellia (Bakevellia) binneyi
"Avicula antiqua" = Bakevellia (Bakevellia) binneyi Brown 1839 oyster
 Pectinida - Pseudomonotidae
"Monotis gryphaeoides" = Pseudomonotis (Pseudomonotis) speluncaria von Schlotheim 1816 scallop
 Myalinida - Myalinidae
"Mytilus acuminatus" = Liebea septifer
"Mytilus acuminatus" = Liebea septifer King 1844 clam
 Arcida - Parallelodontidae
"Arca tumida" = Parallelodon striatus
"Arca tumida" = Parallelodon striatus von Schlotheim 1816 clam
 Trigoniida - Schizodidae
"Axinus truncatus" = Schizodus truncatus
"Axinus truncatus" = Schizodus truncatus King 1844 clam
 Cardiida - Kalenteridae
"Myoconcha costata" = Permophorus costatus, "Myoconcha modioliformis" = Stutchburia modioliformis
"Myoconcha costata" = Permophorus costatus Brown 1839 clam
"Myoconcha modioliformis" = Stutchburia modioliformis King 1844 clam
Rhynchonellata
 Spiriferinida - Paraspiriferinidae
"Spirifer multiplicatus" = Paraspiriferina multiplicata
"Spirifer multiplicatus" = Paraspiriferina multiplicata Sowerby 1829
 Rhynchonellida - Stenoscismatidae
"Terebratula schlotheimii" = Stenoscisma schlotheimi
"Terebratula schlotheimii" = Stenoscisma schlotheimi von Buch 1835
 Terebratulida - Dielasmatidae
"Terebratula elongata" = Dielasma elongatum
"Terebratula elongata" = Dielasma elongatum von Schlotheim 1816
Strophomenata
 Orthotetida - Schuchertellidae
"Orthis pelargonata" = Streptorhynchus pelargonatus
"Orthis pelargonata" = Streptorhynchus pelargonatus von Schlotheim 1816
Stenolaemata
 Cryptostomata - Reteporinidae
"Retepora lonsdalii" = Kingopora ehrenbergi
"Retepora lonsdalii" = Kingopora ehrenbergi Geinitz 1846
 Cryptostomata - Acanthocladiidae
"Fenestella virgulacea" = Synocladia dubia
"Fenestella virgulacea" = Synocladia dubia Schlotheim 1820