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Taxonomy
Amphilichas shallopensis was named by Twenhofel (1928). Its type specimen is GSC 2546, a cephalon/head (cranidium), and it is a 3D body fossil. Its type locality is Crique de la Chaloupe, which is in a Telychian carbonate limestone/shale in the Jupiter Formation of Canada. It is the type species of Anadesma.
It was recombined as Arctinurus shallopensis by Chatterton and Ludvigsen (2004); it was recombined as Anadesma shallopensis by Holloway (2021).
It was recombined as Arctinurus shallopensis by Chatterton and Ludvigsen (2004); it was recombined as Anadesma shallopensis by Holloway (2021).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1866 | Lichas canadensis Billings |
| 1928 | Amphilichas canadensis Twenhofel |
| 1928 | Amphilichas shallopensis Twenhofel p. 328 figs. pl. 57, fig. 6 |
| 1939 | Amphilichas anticostiensis Northrop |
| 2004 | Arctinurus anticostiensis Chatterton and Ludvigsen p. 25 |
| 2004 | Arctinurus shallopensis Chatterton and Ludvigsen p. 26 |
| 2021 | Anadesma shallopensis Holloway p. 75 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Anadesma shallopensis Twenhofel 1928
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Invalid names: Anadesma anticostiensis Northrop 1939 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Whittington et al. 1997, Aberhan et al. 2004 | |||||
Collections (16 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Aeronian | Canada (Quebec) | Arctinurus anticostiensis (186082 187764) | |
| Aeronian | Canada (Québec) | Arctinurus anticostiensis (24416 24418) | |
| Aeronian - Telychian | Canada (Quebec) | Arctinurus anticostiensis (184409 186046 186065 187767) | |
| Aeronian - Telychian | Canada (Québec) | Arctinurus anticostiensis (24412) | |
| Telychian | Canada (Anticosti) | Amphilichas shallopensis (229057) | |
| Telychian | Canada (Québec) | Arctinurus anticostiensis (24420 24423 24424) | |
| Telychian | Canada (Quebec) | Arctinurus anticostiensis (186086 186089 187769) |