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Bothriolepis rex
Taxonomy
Bothriolepis rex was named by Downs et al. (2016). Its type specimen is NUFV 1192, a partial skull, and it is a 3D body fossil. Its type locality is NV2K11 Site, which is in a Frasnian wet floodplain siltstone/sandstone in the Nordstrand Point Formation of Canada.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2016 | Bothriolepis rex Downs et al. p. 4 figs. Fig. 3 |
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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.
†Bothriolepis rex Downs et al. 2016
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. P. Downs et al. 2016 | As the largest known species of Bothriolepis, Bothriolepis rex is distinguished from the majority of Bothriole- pis species by its large body size (cephalic C thoracic armor length conservatively estimated at 700 mm) and dermal skeletal plates that are thick and compact. Among the known large-bod- ied species of Bothriolepis (B. maxima and B. gigantea), Bothrio- lepis rex is diagnosed by the presence of a preorbital recess with a horizontal rostral margin on the premedian; a wide unorna- mented border surrounding the premedian’s infraorbital sensory line; caudally positioned central sensory lines that meet the mar- gin of the nuchal close to the lateral corners; a supraotic thicken- ing that does not extend caudal to a transverse crista of the nuchal’s visceral surface; and a tall lateral lamina of the ADL (height/length [H/L] index of 0.4). |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum | |||||
| References: Kiessling 2004, Carroll 1988 | |||||
Age range: Middle Frasnian or 379.00000 to 375.20000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Frasnian | Canada (Nunavut) | Bothriolepis rex (type locality: 236499) |