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In 1993, ornithologist Walter E. Boles described material pertaining to an accipitrid that was collected from the late Oligocene to early Miocene aged Sticky Beak Site in the Riversleigh World Heritage Area, Queensland, Australia. This material was referred to a new genus and species, Pengana roberbolesi. The holotype, and only known specimen, (QMF16865) is a distal portion of the left tibiotarsus. |
In 1993, ornithologist Walter E. Boles described material pertaining to an accipitrid that was collected from the late Oligocene to early Miocene aged Sticky Beak Site in the Riversleigh World Heritage Area, Queensland, Australia. This material was referred to a new genus and species, Pengana roberbolesi. The holotype, and only known specimen, (QMF16865) is a distal portion of the left tibiotarsus. |
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The genus name is derived from an Aboriginal word for ‘hawk’, while the species name is in honour of the author's late father, Richard Boles. |
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==Description== |
==Description== |
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Revision as of 14:04, 19 May 2024
| Ankylosaur Enthusiast/sandbox4 Temporal range: Late Oligocene to Early Miocene
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Accipitriformes |
| Family: | Accipitridae |
| Genus: | †Pengana |
| Species: | †P. robertbolesi
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| Binomial name | |
| †Pengana robertbolesi Boles, 1993
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History and naming
In 1993, ornithologist Walter E. Boles described material pertaining to an accipitrid that was collected from the late Oligocene to early Miocene aged Sticky Beak Site in the Riversleigh World Heritage Area, Queensland, Australia. This material was referred to a new genus and species, Pengana roberbolesi. The holotype, and only known specimen, (QMF16865) is a distal portion of the left tibiotarsus.
The genus name is derived from an Aboriginal word for ‘hawk’, while the species name is in honour of the author's late father, Richard Boles.
Description
- Characterised by a horizontal supratendinal bridge, mediolaterally (middle and sides)
flattened distal condyles, parallel sides to distal end of shaft, and anterioposteriorly compressed shaft.
- Is similar to Geranospiza and Polyboroides but differs by its greater size, proportional width of supratendinal canal, orientation of supratendinal canal, more medially placed distal opening to the supratendinal canal, and proportionally wider anterior intercondylar fossa.
- Body size larger than any living Australian accipitirid, with the exception of the wedge tailed eagle and white breasted sea eagle.
- Tibiotarsus has an overall flat and rectangular appearance. Shaft compressed from front to back. Both the front and back faces are flattened. Distal width of 16.4 mm, with an external condyle depth of and an internal condyle depth of