Dounans Limestone, Lime Craig Quarry (Ordovician of the United Kingdom)

Where: Scotland, United Kingdom (56.0° N, 4.0° W: paleocoordinates 27.1° S, 36.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Zone J (Pseudocybele nasuta) trilobite zone, Dounans Limestone Formation, Cassinian (482.3 - 470.0 Ma)

• Listed as Late Canadian, Cassinian. Ethington & Austin (1991) put this in Zone J

• formation-level stratigraphic resolution

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

• Shelf margin (suggestive of Fortey's illaenid-cheirurid association) or outer shelf fine-grained lime muds
• Calcilutite

Size classes: macrofossils, mesofossils

Collection methods: 7500 kgs of raw rock collected from quarry scree

Primary reference: J. K. Ingham, G. B. Curry, and A. Williams. 1986. Early Ordovician Dounans Limestone fauna, Highland Border Complex, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences 76(4):481-513 [P. Novack-Gottshall/P. Hearn/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 75589: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 18.10.2007, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Incertae indet.
Incertae indet.
"Numerous"
Conodonta
 Panderodontida - Panderodontidae
Parapanderodus cornuformis, Parapanderodus striatus
Parapanderodus cornuformis conodont
comuform element - 6 specimens; scandodontiform element - 1 specimens Parapanderodus striatus
 Ozarkodinida -
Periodon flabellum
Periodon flabellum conodont
Sb element - 1 specimen; Pa element - 1 specimen
 Prioniodontida - Oistodontidae
Oistodus aff. lanceolatus, Jumudontus gananda
Oistodus aff. lanceolatus Pander 1856 conodont
Jumudontus gananda Cooper 1981 conodont
 Protopanderodontida - Protopanderodontidae
Eucharodus parallelus, Protopanderodus gradatus
Eucharodus parallelus Branson and Mehl 1933 conodont
3 specimens
 Protopanderodontida - Drepanoistodontidae
Drepanoistodus sp.
Drepanoistodus sp. Lindstrom 1971 conodont
erect element - 1 specimen
  -
Scandodus brevibasis
Scandodus brevibasis conodont
oistodontiform element - 1 specimen; distacodontifom element - 1 specimen; drepanodontiform element - 3 specimens
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Columnals
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
"Unassigned"
 Murchisoniina - Straparollinidae
Straparollinidae sp.
Straparollinidae sp. Wagner 1999 snail
 Murchisoniina - Murchisoniidae
cf. Murchisonia sp.
cf. Murchisonia sp. d'Archiac and de Verneuil 1841 snail
 Murchisoniina - Subulitidae
cf. Subulites sp.
cf. Subulites sp. Emmons 1842 snail
 Bellerophontida - Sinuitidae
cf. Cyrtodiscus sp.
cf. Cyrtodiscus sp. Perner 1903 snail
 Euomphalina - Macluritidae
cf. Maclurites sp.
cf. Maclurites sp. Le Sueur 1818 snail
Cephalopoda
 Endoceratoidea -
Endoceratoidea indet.
Endoceratoidea indet. Teichert 1933
Fragment
Rhynchonellata
 Pentamerida - Camerellidae
Camerella sp., Idiostrophia sp.
Camerella sp. Billings 1859
"Conjoined or isolated valves and fragments"
Idiostrophia sp. Ulrich and Cooper 1936
"Conjoined or isolated valves and fragments"
 Pentamerida - Syntrophiidae
Syntrophiidae indet.
Syntrophiidae indet. Schuchert 1896
"Conjoined or isolated valves and fragments"
 Orthida -
Orthida "indet. sp.1", Orthida "indet. sp.2"
Orthida "indet. sp.1" Schuchert and Cooper 1932
"Conjoined or isolated valves and fragments"
Orthida "indet. sp.2" Schuchert and Cooper 1932
"Conjoined or isolated valves and fragments"
 Orthida - Hesperonomiidae
Hesperonomiidae indet.
Hesperonomiidae indet. Ulrich and Cooper 1936
"Conjoined or isolated valves and fragments"
 Orthida - Orthidae
Orthambonites sp.
Orthambonites sp. Pander 1830
"Conjoined or isolated valves and fragments"
 Orthida - Archaeorthidae
Nothorthis sp., Archaeorthis sp.
Nothorthis sp. Ulrich and Cooper 1938
"Conjoined or isolated valves and fragments"
Archaeorthis sp. Schuchert and Cooper 1931
"Conjoined or isolated valves and fragments"
 Orthida - Orthidiellidae
Orthidium sp.
Orthidium sp. Hall and Clarke 1892
"Conjoined or isolated valves and fragments"
Stenolaemata
 Trepostomata -
Trepostomata indet.
Trepostomata indet. Ulrich 1882
Fragments
Trilobita
 Ptychopariida - Catillicephalidae
Distazeris adoceta
Distazeris adoceta trilobite
Table tabulates
 Proetida - Dimeropygidae
Ischyrotoma stubblefieldi
Ischyrotoma stubblefieldi Ingham 1986 trilobite
 Proetida - Telephinidae
Carolinites cf. genacinaca
Carolinites cf. genacinaca Ross 1951 trilobite
 Proetida - Bathyuridae
Bathyuridae indet., Punka aetholiciocorus, "Goniotelina aff. williamsi" = Acidiphorus williamsi
Bathyuridae indet. Walcott 1886 trilobite
"Goniotelina aff. williamsi" = Acidiphorus williamsi Ross 1951 trilobite
 Corynexochida - Illaenidae
Illaenus aff. oscitatus
Illaenus aff. oscitatus Fortey 1980 trilobite
 Phacopida - Cheiruridae
Heliomeroides sp., Sycophantia aff. seminosa, Kawina sp.
Heliomeroides sp. Evitt 1951 trilobite
Sycophantia aff. seminosa Fortey 1980 trilobite
Kawina sp. Barton 1916 trilobite
 Phacopida - Pliomeridae
Strotactinus cf. salteri, Strotactinus sp., Ectenonotus aff. connemaricus
Strotactinus sp. Bradley 1925 trilobite
or Ectenonotus
Ectenonotus aff. connemaricus Reed 1909 trilobite
 Odontopleurida - Odontopleuridae
Ceratocephala "sp. nov. Ingham et al. 1986"