List of thelodont genera

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Thelodonti is a class of extinct Palaeozoic jawless fishes with distinctive scales instead of large plates of armor. Thelodonts are united in possession of "thelodont scales". This defining character is not necessarily a result of shared ancestry, as it may have been evolved independently by different groups. Thus, the thelodonts are generally thought to represent a polyphyletic group, although there is no firm agreement on this point. On the basis that they are monophyletic, they are reconstructed as being ancestrally marine and invading freshwater on multiple occasions.

Contents

Accepted genera

Subclass Thelodonti – Jaekel, 1911 [1] – 55 [2] genera
NameSpeciesRange
Amaltheolepis [3]
Ørvig, 1969
Type species:
A. winseniØrvig, 1969
Five other species
  • A. austfjordiŽigaitė et al., 2013
  • A.? balticaKaratajūtė-Talimaa, 1978
  • A. bystroviKaratajūtė-Talimaa, 1978
  • A. montiwatsoniŽigaitė et al., 2013
  • A. terranoviBlom et al., 2022
 Pragian–Eifelian
Europe
Angaralepis [4]
Karatajūtė-Talimaa, 1997
Type species:
A. moskalenkoae(Karatajūtė-Talimaa, 1978)		 Llandovery
Siberia
Apalolepis [5]
Karatajūtė-Talimaa, 1968
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}		Latest Silurian(?)–Lochkovian [a]
United States
Archipelepis [6]
Märss, 2001
Archipelepis turbinata.jpg 		Type species:
A. turbinataSoehn, Märss, Caldwell & Wilson, 2001
One other species
  • A. bifurcataMärss, Wilson & Thorsteinsson, 2002
Late Llandovery–Early Wenlock
Canada
Arianalepis [7]
Hairapetian, Roelofs & Trinajstic, 2016
Type species:
A. megacostataHairapetian, Roelofs & Trinajstic, 2016		 Late Devonian
Australia, Iran
Australolepis [8]
Turner & Dring, 1981
Type species:
A. seddoniTurner & Dring, 1981		 Givetian–Late Devonian
Australia, Iran, Poland
Barlowodus [9]
Märs, Wilson & Thorsteinsson, 2002
Type species:
B. excelsusMärss, Wilson & Thorsteinsson, 2002
Two other species
  • B. floralisMärss, Wilson & Thorsteinsson, 2002
  • B. tridensMärss, Wilson & Thorsteinsson, 2002
 Lochkovian
Canada
Boothialepis [10]
Märss, 1999
Type species:
B. thorsteinssoniMärss, 1999		 Early Devonian
Canada
Boreania [11]
Karatajūtė-Talimaa, 1985
Type species:
B. minimaKaratajūtė-Talimaa, 1985		 Pridoli–Lochkovian
United States, Europe [2]
Canonia
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Chattertonodus [6]
Märs, Wilson & Thorsteinsson, 2002
Type species:
C. cometoidesMärss, Wilson & Thorsteinsson, 2002		 Pridoli
Canada
Cometicercus [12]
Wilson & Caldwell, 1998
Cometicercus talimaaae.jpg 		Type species:
C. cometoidesWilson & Caldwell, 1998		 Lochkovian
Canada
Drepanolepis [13]
Wilson & Caldwell, 1998
Drepanolepis maersae.jpg 		Type species:
D. maerssaeWilson & Caldwell, 1998		 Lochkovian
Canada
Eestilepis [6]
Märs, Wilson & Thorsteinsson, 2002
Type species:
E. prominensMärss, Wilson & Thorsteinsson, 2002		 Wenlock
Canada
Erepsilepis [14]
Märs, Wilson & Thorsteinsson, 2002
Type species:
E. margaritiferaMärss, Wilson & Thorsteinsson, 2002		 Wenlock
Canada
Furcacauda [15]
Wilson & Caldwell, 1998
Furcacauda Wiki2.png 		Type species:
F. heintzae(Dineley & Loeffler, 1976)
One other species
  • F. fredholmaeWilson & Caldwell, 1998
 Lochkovian
Canada
Gampsolepis
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Glacialepis [16]
Märs, Wilson & Thorsteinsson, 2002
Type species:
G. corpulentaMärss, Wilson & Thorsteinsson, 2002		 Lochkovian
Canada
Goniporus
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Helenolepis
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Illoganellia [16]
Märs, Wilson & Thorsteinsson, 2002
Type species:
I. colosseaMärss, Wilson & Thorsteinsson, 2002		 Wenlock
Canada
Jesslepis
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Lanarkia
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Larolepis
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Loganellia
,
Loganellia2.jpg 		Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Longodus
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Nethertonodus
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Nikolivia
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Niurolepis
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Noturinia
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Nunavutia [17]
Märs, Wilson & Thorsteinsson, 2002
Type species:
N. fasciataMärss, Wilson & Thorsteinsson, 2002		 Ludlow
Canada
Oeselia
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Overia
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Paralogania
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Parathelodus
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Pezopallichthys [18]
Wilson & Caldwell, 1998
Type species:
P. ritchieiWilson & Caldwell, 1998		 Wenlock
Canada
Phillipsilepis [19]
Märs, Wilson & Thorsteinsson, 2002
Type species:
P. crassaMärss, Wilson & Thorsteinsson, 2002
Two other species
  • P. cornutaMärss, Wilson & Thorsteinsson, 2002
  • P. pusillaMärss, Wilson & Thorsteinsson, 2002
 Wenlock
Canada
Phlebolepis
,
PhlebolepisDB15.jpg 		Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Praetrilogania
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Sandivia
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Shielia
,
Shielia tiati.svg 		Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Skamolepis
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Sophialepis [16]
Märs, Wilson & Thorsteinsson, 2002
Type species:
S. ancorataMärss, Wilson & Thorsteinsson, 2002		 Lochkovian
Canada
Sphenonectris [20]
Wilson & Caldwell, 1998
Sphenonectris turnernae white background.jpg 		Type species:
S. turneraeWilson & Caldwell, 1998		 Lochkovian
Canada
Stroinolepis
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Talimaalepis [21]
Žigaitė, 2004
Type species:
T. rimaeŽigaitė, 2004
One other species
  • T. kadvoiensis(Karatajūtė-Talimaa, 1978)
 Llandovery–Pridoli
Mongolia, Siberia
Talivalia [22] [23] [24]
Märs, Wilson & Thorsteinsson, 2002
Type species:
T. elongata(Karatajūtė-Talimaa, 1978)
One other species
  • T. svalbardiaŽigaitė et al., 2013
 Pridoli–Lower Devonian
North America, Europe
Thelodus
,
Thelodus parvidens.JPG 		Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Thulolepis
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Trimerolepis
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Turinia
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Valiukia
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Valyalepis
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
Woodfjordia [25]
Žigaitė et al., 2013
Type species:
W. collisaŽigaitė et al., 2013		 Emsian [2]
Svalbard
Zueguelepis
,
Type species:
{{{type-species}}}{{{type-authority}}}, {{{type-authority-year}}}
  1. ↑ The range is affected by uncertainties in the position of the Roberts Mountains Formation's Silurian–Devonian boundary.

Other genera

Genera from Märss et al., 2007, not present in the list above. [26]

GenusStatus
Bystrowia
Cephalopterus
Coelolepides
Coelolepis
Goniophorus
Gonioporus
Katoporodus
Katoporus
Loganella Preoccupied, synonym of Loganiella [27]
Logania Preoccupied, synonym of Loganiella [27]
PachylepisSynonym of Thelodus
Paraturinia
Sigurdia
Thelolepis
Thelolepsis
Turinea
Zuegelepis

References

  1. ↑ Blom et al. 2023, p. 10.
  2. 1 2 3 Ferrón et al. 2018, Appendix S1.
  3. ↑ Blom et al. 2023, p. 10–13.
  4. ↑ Žigaitė 2013, p. 126, 141.
  5. ↑ Burrow, Murphy & Turner 2023, p. 2, 23–24.
  6. 1 2 3 Märss, Wilson & Thorsteinsson 2002, p. 103.
  7. ↑ Hairapetian, Roelofs & Trinajstic 2016, p. 280.
  8. ↑ Turner & Ginter 2018, p. 469–470.
  9. ↑ Märss, Wilson & Thorsteinsson 2002, p. 114–115.
  10. ↑ Märss 1999, p. 1082–1084.
  11. ↑ Burrow, Murphy & Turner 2023, p. 2, 22–23.
  12. ↑ Wilson & Caldwell 1998, p. 15.
  13. ↑ Wilson & Caldwell 1998, p. 16.
  14. ↑ Märss, Wilson & Thorsteinsson 2002, p. 98.
  15. ↑ Wilson & Caldwell 1998, p. 20–22.
  16. 1 2 3 Märss, Wilson & Thorsteinsson 2002, p. 94.
  17. ↑ Märss, Wilson & Thorsteinsson 2002, p. 94–95.
  18. ↑ Wilson & Caldwell 1998, p. 12.
  19. ↑ Märss, Wilson & Thorsteinsson 2002, p. 101–103.
  20. ↑ Wilson & Caldwell 1998, p. 17–18.
  21. ↑ Žigaitė 2013, p. 133–137.
  22. ↑ Märss, Wilson & Thorsteinsson 2002, p. 111.
  23. ↑ Žigaitė et al. 2013, p. 62.
  24. ↑ Blom et al. 2023, p. 24.
  25. ↑ Žigaitė et al. 2013, p. 59.
  26. ↑ Märss, Turner & Karatajūte-Talimaa 2007, p. 143.
  27. 1 2 Märss, Wilson & Thorsteinsson 2002, p. 90.

Works cited

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