Herefordshire Konservat-Lagerst├Ątte (Silurian of the United Kingdom)

Where: United Kingdom (52.1° N, 2.8° W: paleocoordinates 29.4° S, 13.5° W)

• coordinate based on political unit

When: Wenlock (433.4 - 427.4 Ma)

• "2-20 cm concretions (n = 378) that occur in a roughly 1-m-thick volcanic ash-rich deposit"

• bed-level stratigraphic resolution

Environment/lithology: basinal (); concretionary, ferruginous, argillaceous, calcareous carbonate and volcaniclastic

• "relatively deep water west of a shelf area (the Midland Platform)"
• "concretions are dominantly calcitic with some quartz and clay minerals, and accessory iron oxide."

Size class: macrofossils

Preservation: concretion, soft parts, replaced with calcite, replaced with pyrite, replaced with hematite

Collection methods: specimens are in the Oxford University Museum

Primary reference: D. E. G. Briggs. 1996. Soft-bodied fossils from a Silurian volcaniclastic deposit. Nature 382:248-250 [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 68060: authorized by John Alroy, entered by John Alroy on 30.12.2006, edited by Loic Villier, Selina Cole, Pete Wagner and Phil Novack-Gottshall

Creative Commons license: CC BY (attribution)

Taxonomic list

 Life -
Acritarcha indet. Evitt 1963 acritarchs
including "mazuelloids"
Protozoa
  -
 Archaeospicularia - Secuicollactidae
Secuicollacta hexactinia10 Won et al. 2002 radiolarian
 Entactinaria - Haplentactiniidae
Haplentactinia armista n. sp.10 Siveter et al. 2007 radiolarian
 Entactinaria - Inaniguttidae
Inanihella sp.10 Nazarov and Ormiston 1984 radiolarian
Inanihella sagena n. sp.10 Siveter et al. 2007 radiolarian
Megacheira
 Leanchoiliida - Enaliktidae
Enalikter aphson n. gen. n. sp.17
Enalikter aphson n. gen. n. sp.17 Siveter et al. 2014
Malacostraca
 Archaeostraca -
Cinerocaris magnifica n. gen. n. sp.4
Cinerocaris magnifica n. gen. n. sp.4 Briggs et al. 2004
 Leptostraca -
Cascolus ravitis n. gen. n. sp.15
Cascolus ravitis n. gen. n. sp.15 Siveter et al. 2017
Ichthyostraca
 Cephalobaenida -
Invavita piratica n. gen. n. sp.12
Invavita piratica n. gen. n. sp.12 Siveter et al. 2015
Ostracoda
 Myodocopida - Cylindroleberididae
Colymbosathon ecplecticos n. gen. n. sp.22, Nasunaris flata n. gen. n. sp.11, Spiricopia aurita n. gen. n. sp.18, Pauline avibella n. gen. n. sp.19
Colymbosathon ecplecticos n. gen. n. sp.22 Siveter et al. 2003 ostracod
Nasunaris flata n. gen. n. sp.11 Siveter et al. 2010 ostracod
Spiricopia aurita n. gen. n. sp.18 Siveter et al. 2018 ostracod
Pauline avibella n. gen. n. sp.19 Siveter et al. 2013 ostracod
 Myodocopida - Nymphatelinidae
Nymphatelina gravida n. gen. n. sp.21
Nymphatelina gravida n. gen. n. sp.21 Siveter et al. 2007 ostracod
 Podocopa -
Podocopa indet.13 Sars 1865 ostracod
"Fragments of unidentified species ... recovered from acid residues"
Palaeocopida indet.13 Henningsmoen 1953 ostracod
"Fragments of unidentified species ... recovered from acid residues"
 Palaeocopida - Bolliidae
Derima paparme n. gen. n. sp.14
Derima paparme n. gen. n. sp.14 Siveter et al. 2024 ostracod
Thecostraca
 Thoracica -
Rhamphoverritor reduncus n. gen. n. sp.5
Rhamphoverritor reduncus n. gen. n. sp.5 Briggs et al. 2005 barnacle
Remipedia
  -
Tanazios dokeron n. gen. n. sp.23
Tanazios dokeron n. gen. n. sp.23 Siveter et al. 2007
 Deuteropoda -
Aquilonifer spinosus n. gen. n. sp.2
Aquilonifer spinosus n. gen. n. sp.2 Briggs et al. 2016
Offacolus kingi
  - Offacolidae
Offacolus kingi n. gen. n. sp.8
Offacolus kingi n. gen. n. sp.8 Orr et al. 2000
new "unnamed arthropod"
 Euchelicerata -
Dibasterium durgae n. gen. n. sp.3
Dibasterium durgae n. gen. n. sp.3 Briggs et al. 2012
Trilobita
 Phacopida - Calymenidae
Tapinocalymene sp. Siveter 1980 trilobite
 Phacopida - Dalmanitidae
Dalmanites sp.13 Barrande 1852 trilobite
"uninvestigated"
Pycnogonida
  -
Haliestes dasos27 Siveter et al. 2004 sea spider
 Hallucishaniids - Hallucigeniidae
Thanahita distos n. gen. n. sp.16
Thanahita distos n. gen. n. sp.16 Siveter et al. 2018
Brachiopoda
  -
Brachiopoda indet.13 Cuvier 1805
"uninvestigated"
Drakozoon kalumon n. gen. n. sp.30 Sutton et al. 2010
attached to Bethia serraticulma
Lingulata
 Lingulida -
Lingulida indet.13 Waagen 1885
"uninvestigated"
Rhynchonellata
 Orthida -
Bethia serraticulma n. gen. n. sp.28
Bethia serraticulma n. gen. n. sp.28 Sutton et al. 2005
 Atrypida - Atrypidae
Atrypidae indet.28 Gill 1871
"probable," attached to Bethia serraticulma
Polychaeta
 Aciculata -
Kenostrychus clementsi n. gen. n. sp.25
Kenostrychus clementsi n. gen. n. sp.25 Sutton et al. 2001
"at least three new polychaetes"
Bivalvia
 Solemyida - Ctenodontidae
Praectenodonta ludensis6 Reed 1931 clam
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
"high-spired" and "small"
 Euomphalina - Platyceratidae
Platyceras sp.29 Conrad 1840 snail
"Platyceras?"
Cephalopoda
 Nautiloidea -
Nautiloidea indet.13 Agassiz 1847 nautiloid
"uninvestigated"
Aplacophora
  -
Acaenoplax hayae n. gen. n. sp.24, Kulindroplax perissokomos n. gen. n. sp.26
Acaenoplax hayae n. gen. n. sp.24 Sutton et al. 2001
Kulindroplax perissokomos n. gen. n. sp.26 Sutton et al. 2012
Ophiocistioidea
  - Sollasinidae
Sollasina cthulhu n. sp.9 Rahman et al. 2019
Stenuroidea
 Proturina - Bdellacomidae
Bdellacoma sp.27 Salter 1857
Crinoidea
  -
Crinoidea indet.13 Miller 1821 Sea lily
"uninvestigated"
Edrioasteroidea
 Edrioasterida - Rhenopyrgidae
Heropyrgus disterminus1 Briggs et al. 2017
Pterobranchia
  -
Pterobranchia indet.13 Lankester 1877 pterobranch
 Graptolithina -
Graptolithina indet.13 Bronn 1849 graptolite
 Graptoloidea -
Monograptina indet. Lapworth 1880 graptolite
"monograptid graptolites"
 Dendroidea -
Dendroidea indet.13 Nicholson 1872 graptolite
"Dendroids?"
unclassified
  -
Porifera indet.13 Grant 1836
"Some 20 other species"
Hexactinellida
 Reticulosa -
Carduispongia pedicula n. gen. n. sp.7
Carduispongia pedicula n. gen. n. sp.7 Nadhira et al. 2019 glass sponge
unclassified
  -
Cnidaria indet.13 Hatschek 1888
"coral (uninvestigated)"
Hydrozoa
 Hydroida -
cf. Hydroida indet.13 Johnston 1836
"?hydroid (uninvestigated colonial organism)"
Marrellomorpha
  -
Xylokorys chledophilia n. gen. n. sp.20
Xylokorys chledophilia n. gen. n. sp.20 Siveter et al. 2007