Tyrone (Ordovician to of the United Kingdom)

Also known as Was: Bardahessiagh Fm. of Pomeroy, Co. Tyrone, Ireland

Where: Northern Ireland, United Kingdom (54.6° N, 6.9° W: paleocoordinates 22.1° S, 31.0° W)

• local area-level geographic resolution

When: Bardahessiagh Formation, Soudleyan to Soudleyan (457.5 - 455.8 Ma)

• formation-level stratigraphic resolution

Environment/lithology: offshore; sandstone

• author interprets paleoenvironment as sandy, shallow shelf

Size class: macrofossils

Preservation: mold/impression

Primary reference: S.P. Tunnicliff. 1982. A revision of Late Ordovician bivalves from Pomeroy, Co. Tyrone, Ireland. Palaeontology 25(1):43-88 [A. Miller/R. Krause/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13840: authorized by Arnold Miller, entered by Rich Krause on 29.04.2002, edited by Torsten Liebrecht and Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

 Strophomenida - Sowerbyellidae
 Orthida - Draboviidae
Bivalvia indet. Linnaeus 1758 clam
 Cyrtodontida - Cyrtodontidae
 Myalinida - Ambonychiidae
 Actinodontida - Cycloconchidae
? Cycloconcha speciosa McCoy 1846 clam
 Modiomorphida - Modiomorphidae
? Semicorallidomus sp. Isberg 1934 clam
 Unioni - Lyrodesmatidae
 Nuculida - Praenuculidae
? Similodonta sp. Soot-Ryen 1964 clam
 Nuculida - Cardiolariidae
Deceptrix sp. Fuchs 1919 clam
 Bellerophontida - Sinuitidae
"Bellerophon elongatus n. sp." = Strangulites elongatus3, "Bellerophon gibbus n. sp." = Sinuites bilobatus3
"Bellerophon elongatus n. sp." = Strangulites elongatus3 Portlock 1843 snail
"Bellerophon gibbus n. sp." = Sinuites bilobatus3 de Sowerby and Murchison 1839 snail
 Bellerophontida - Bucaniidae
Salpingostoma cf. infundibulum4 Cowper Reed 1921 snail
BELUM K4329 (part, syntype)
 Orthocerida - Proteoceratidae
Gorbyoceras bilineatum2
GSM 103508; GSM (NIG)939, 939a; BELUM K4363, 4365 (block with 5 specimens), 20635 (2 specimens); RSM 1870.12384
 Barrandeocerida - Apsidoceratidae
? Fremontoceras cf. jewetti2 Flower 1947
GSM 103473 (identified as Phragmoceras? sp. by Portlock, 1843); GSM 103482 (indentified as Phragmoceras brateri? by Blake, 1882)
 Nautiloidea -
Nautiloidea indet.1 Agassiz 1847 nautiloid
GSM 103559 (listed as syntype of Orthoceras elongatocinctum by Tunnicliff, 1980, and figured by Portlock, 1843, but "is too poorly preserved to be determined as anything other than an orthoconic nautiloid")
 Tarphycerida - Trocholitidae
? Trocholites sp.2 Conrad 1838
BELUM K4329 (part)
 Oncocerida - Diestoceratidae
? Dowlingoceras sp.2, "Poterioceras approximatum n. sp." = Diestoceras approximatum2
? Dowlingoceras sp.2 Foerste 1928
NMI F14761
"Poterioceras approximatum n. sp." = Diestoceras approximatum2 M'Coy 1846
NMI F4562 (type)