Karksi (Devonian of Estonia)

Also known as MDF Härma

Where: Estonia (58.1° N, 25.5° E: paleocoordinates 10.2° S, 10.2° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: varcus conodont zone, Härma Member (Burtnieki Formation), Early/Lower Givetian (388.1 - 383.7 Ma)

• Burtnieki regional stage, Härma substage

Environment/lithology: delta plain; lithology not reported

Size class: macrofossils

Primary reference: E. Mark-Kurik. 2000. The Middle Devonian fishes of the Baltic States (Estonia, Latvia) and Belarus. In A. Blieck, S. Turner (eds.), CFS Courier Forschungsinstitut Senckenberg 223:309-324 [E. Dunne/S. Fasey]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 225851: authorized by Emma Dunne, entered by Sophie Fasey on 06.06.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Heterostius ingens, Tropinema harmae, Karksilepis parva, Minioracanthus sp., Markacanthus alius
Placodermi
 Arthrodira - Actinolepidae
Actinolepis magna
Actinolepis magna Mark-Kurik 1973 armour-plated fish
 Arthrodira - Coccosteidae
Coccosteus markae
Coccosteus markae Obrucheva 1962 armour-plated fish
 Arthrodira - Holonematidae
Holonema harmae
Holonema harmae Mark 1953 armour-plated fish
 Arthrodira -
Homostius latus
Homostius latus armour-plated fish
 Antiarchiformes - Asterolepididae
Asterolepis sp., Asterolepis dellei
Asterolepis sp. Eichwald 1840 armour-plated fish
Asterolepis dellei Gross 1940 armour-plated fish
Chondrichthyes
 Acanthodiformes - Acanthodidae
Acanthodidae "gen. et. sp. nov.", Cheiracanthus "sp. nov. 1", Cheiracanthus "sp. nov. 2", Cheiracanthus longicostatus, Cheiracanthus brevicostatus
Acanthodidae "gen. et. sp. nov." Huxley 1861 spiny fish
Cheiracanthus "sp. nov. 1" Agassiz 1835 spiny fish
Cheiracanthus "sp. nov. 2" Agassiz 1835 spiny fish
Cheiracanthus longicostatus Gross 1973 spiny fish
Cheiracanthus brevicostatus Gross 1973 spiny fish
  -
Homacanthus sp., Homacanthus gracilis, Ptychodictyon rimosum, Ptychodictyon sulcatum
Homacanthus sp. Agassiz 1845 spiny fish
Homacanthus gracilis Whiteaves 1889 spiny fish
Ptychodictyon rimosum Gross 1973 spiny fish
Ptychodictyon sulcatum Gross 1973 spiny fish
 Diplacanthiformes - Diplacanthidae
Diplacanthus gravis, Diplacanthus sp., Diplacanthus carinatus
Diplacanthus sp. Agassiz 1843 spiny fish
Diplacanthus carinatus Gross 1973 spiny fish
 Climatiiformes - Climatiidae
Nostolepis gaujensis
 Elasmobranchii -
Elasmobranchii "n. gen."
 Acanthodei - Acanthoessidae
Rhadinacanthus multisulcatus
Osteichthyes
 Cheirolepidiformes - Cheirolepididae
Cheirolepis sp.
Cheirolepis sp. Agassiz 1835 ray-finned fish
 Dipnomorpha -
Hamodus lutkevitshi
Hamodus lutkevitshi lobe-finned fish
 Dipnomorpha - Holoptychiidae
Holoptychiidae indet., Glyptolepis karksiensis
Holoptychiidae indet. Owen 1859 lobe-finned fish
Glyptolepis karksiensis lobe-finned fish
 Osteolepiformes - Gyroptychiidae
Gyroptychius elgae
Gyroptychius elgae Vorobyeva 1977 lobe-finned fish
 Onychodontiformes - Onychodontidae
Onychodus sp.
Onychodus sp. Newberry 1857 lobe-finned fish