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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Didymograptus extensus
Taxonomy
Graptolithus extensus was named by Hall (1858).
It was recombined as Didymograptus extensus by Henderson (1983).
It was recombined as Didymograptus extensus by Henderson (1983).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1858 | Graptolithus extensus Hall |
| 1983 | Didymograptus extensus Henderson |
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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.
†Didymograptus extensus Hall 1858
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Aberhan et al. 2004, Aberhan 1992 | |||||
Age range: base of the Castlemainian to the top of the Yapeenian or 471.30000 to 469.40000 Ma
Collections (22 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Arenig | Australia (Queensland) | Didymograptus extensus (197366 197367 197368 197369 197370 197378) | |
| Arenig | USA (Alaska) | Didymograptus extensus (101852) | |
| Arenig | Canada (Yukon) | Didymograptus extensus (204016 204017 204021 204024 204026 204028 204034) | |
| Arenigian | Canada (Northwest Territories) | Didymograptus extensus (25517) | |
| Chewtonian - Castlemainian | USA (Idaho) | Didymograptus extensus (145223) | |
| Castlemainian | New Zealand | Didymograptus extensus (63196 63203 63284) | |
| Castlemainian - Yapeenian | USA (Idaho) | Didymograptus extensus (145225 145326) | |
| Yapeenian | New Zealand | Didymograptus extensus (63281) |