PBDB Collection

Holothurian Bed, upper part of Bach-y-Graig section (Ordovician of the United Kingdom)

Where: Wales, United Kingdom (52.2° N, 3.4° W: paleocoordinates 54.0° S, 18.6° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Hustedograptus teretiusculus graptolite zone, Holothurian Bed Member (Llanfawr Mudstone Formation), Llandeilo (461.1 - 458.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; mudstone

Size class: macrofossils

Primary reference: J. P. Botting and L. A. Muir. 2012. Fauna and ecology of the holothurian bed, Llandrindod, Wales, UK (Darriwilian, Middle Ordovician), and the oldest articulated holothuria. Palaeontologia Electronica Vol. 15, Issue 1; ,28p; 15(1):9A [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 216511: authorized by Pete Wagner, entered by Pete Wagner on 15.12.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Carpoida "indet.", Oesolcucumaria eostre n. gen. n. sp., Nautiloida indet., Hexactinellidae indet., Scolecodonta indet. Carpoida "indet." Rare one specimen Oesolcucumaria eostre n. gen. n. sp. Occasional Nautiloida indet. Rare few specimens Hexactinellidae indet. Rare Scolecodonta indet. One associated pair of elements
Algae
Algae -	Algae sp. Algae sp. Remains on which ostracodes are feeding
Anthozoa
-	Anthozoa "Undetermined smooth form" Anthozoa "Undetermined smooth form" Ehrenberg 1834 Common
Scyphozoa
Conulariida -	Conulariida indet. Conulariida indet. Miller and Gurley 1896 jellyfish Rare one specimen
unclassified
-	Porifera "several spp." Porifera "several spp." Grant 1836 Rare
Demospongiae
Protomonaxonida - Hazeliidae	? Xylochos sp. ? Xylochos sp. Botting 2004 demosponge Occasional
Protomonaxonida - Wapkiidae	cf. Wapkia indet. cf. Wapkia indet. Walcott 1920 demosponge Occasional
Protomonaxonida - Piraniidae	? Pirania sp. ? Pirania sp. Walcott 1920 demosponge Rare
Hexactinellida
Amphidiscophora -	Reticulosa "sp. 1", Reticulosa "sp. 2" Reticulosa "sp. 1" Reid 1958 glass sponge Frequent Reticulosa "sp. 2" Reid 1958 glass sponge Frequent
Heteractinida
Octactinellida - Eiffeliidae	Eiffeliidae indet. Eiffeliidae indet. Rigby 1986 Isolated spicules only
Trilobita
Proetida - Rorringtoniidae	Rorringtonia kennedyi Rorringtonia kennedyi Owens 1981 trilobite Occasional
Phacopida - Calymenidae	Platycalymene simulata Platycalymene simulata trilobite Rare one complete meraspis
Asaphida - Asaphidae	"Ogygiocarella debuchii" = Ogygiocaris, Ogyginus corndensis "Ogygiocarella debuchii" = Ogygiocaris trilobite Moderately common Ogyginus corndensis trilobite Common including as complete juveniles
Asaphida - Nileidae	Barrandia cordai Barrandia cordai trilobite Rare
Asaphida - Cyclopygidae	Cyclopygidae "indet.", Microparia lusca Cyclopygidae "indet." Raymond 1925 trilobite Rare fragments Microparia lusca trilobite Rare few near complete adults
Trinucleida - Trinucleidae	Protolloydolithus reticulatus Protolloydolithus reticulatus Elles 1940 trilobite Occasional
Trinucleida - Raphiophoridae	Cnemidopyge parva Cnemidopyge parva Hughes 1969 trilobite Occasional complete moults
Odontopleurida - Odontopleuridae	Odontopleuridae indet. Odontopleuridae indet. Burmeister 1843 trilobite Rare one rib fragment
Artiopoda
Agnostida - Metagnostidae	Geragnostus mccoyii Geragnostus mccoyii Occasional
Ostracoda
Palaeocopida -	Bullaeferum sp. Bullaeferum sp. ostracod Occasional
Hollinocopida -	Nanopsis sp. Nanopsis sp. Henningsmoen 1953 ostracod Occasional
Palaeoscolecida
Cricocosmida - Palaeoscolecidae	Palaeoscolecidae "gen. et sp. nov. Botting et al. in press" Palaeoscolecidae "gen. et sp. nov. Botting et al. in press" Whittard 1953 One confirmed specimen and many too poorly preserved to identify
Polychaeta
-	Sphenothallus sp. Sphenothallus sp. Hall 1847 rare few specimens
Bivalvia
-	Bivalvia indet. Bivalvia indet. Linnaeus 1758 clam Rare
Gastropoda
-	Gastropoda indet. Gastropoda indet. Cuvier 1795 snail Rare few specimens
Rhynchonellata
Orthida - Dalmanellidae	Dalmanellidae indet. Dalmanellidae indet. Schuchert 1913 Rare
Lingulata
Lingulida - Trematidae	Schizocrania cf. salopiensis Schizocrania cf. salopiensis Occasional only encrusting undetermined substrate
Lingulida - Pseudolingulidae	Meristopacha ? granulata Meristopacha ? granulata Rare
Lingulida - Elkaniidae	Monobolina ramsayi Monobolina ramsayi Occasional
Lingulida - Obolidae	? Apatobolus micula, Palaeoglossa attentuata ? Apatobolus micula Superabundant Palaeoglossa attentuata Common
Acrotretida - Biernatidae	Opsiconidion nudum Opsiconidion nudum Occasional
Conodonta
-	Conodonta "Occasional isolated elements" Conodonta "Occasional isolated elements" conodont rare as clusters (pellets?
Pterobranchia
Dendroidea - Dendrograptidae	Dendrograptus spp. Dendrograptus spp. Hall 1858 graptolite Rare at least two species
Graptoloidea - Diplograptidae	Hustedograptus teretiusculus Hustedograptus teretiusculus Hisinger 1840 graptolite Occasional
Graptoloidea - Glossograptidae	Cryptograptus tricornis Cryptograptus tricornis Carruthers 1859 graptolite Frequent
Stylophora
Cornuta -	? Galliaecystis sp. ? Galliaecystis sp. Rare fragments of four specimens
Mitrata - Kirkocystidae	? Anatifopsis sp. ? Anatifopsis sp. Barrande 1872 Common
Soluta
-	Soluta "indet." Soluta "indet." Jaekel 1900 Rare one articulated specimen
Cystoidea
-	Cystoidea "indet." Cystoidea "indet." von Buch 1846 Rare one specimen and one possible