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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Ptychaspis granulosa
Taxonomy
Dikelocephalus granulosus was named by Owen (1852). It is not extant.
It was recombined as Ptychaspis granulosa by Whitfield (1878).
It was recombined as Ptychaspis granulosa by Whitfield (1878).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1852 | Dikelocephalus granulosus Owen p. 575 figs. fig. 7 |
| 1878 | Ptychaspis granulosa Whitfield p. 54 |
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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.
†Ptychaspis granulosa Owen 1852
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Whittington et al. 1997, Hendy et al. 2009, Hendy 2009 | |||||
Age range: Franconian or 497.00000 to 486.85000 Ma
Collections (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Franconian | USA (Montana) | Ptychaspis granulosa (247 131319 240232) | |
| Franconian | USA (Minnesota) | Ptychaspis granulosa (62099 62100 62101 62102 62103 62104 62105 62106 62107 62108 62109 62110) |