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Eopelecanus aegyptiacus
Taxonomy
Eopelecanus aegyptiacus was named by El Adli et al. (2021). Its type specimen is MUVP 505, a limb element (right tibiotarsus), and it is a 3D body fossil. Its type locality is Garet Gehannam, Birket Qarun Fm., which is in a Priabonian offshore shelf claystone in the Birket Qarun Formation of Egypt. It is the type species of Eopelecanus.
Synonymy list
| Year | Name and author |
|---|---|
| 2021 | Eopelecanus aegyptiacus El Adli et al. p. 3 figs. Figs. 2–5 |
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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.
†Eopelecanus aegyptiacus El Adli et al. 2021
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. J. El Adli et al. 2021 | Differs from non-pelecanids based on the following combination of characters: (1) distal condyles of the tibiotarsus medially bent; (2) medial condyle protruding slightly further distally and cranially than lateral condyle; (3) lateral condyle transversely narrower than medial condyle; (4) lateral edge of lateral condyle approximately flush with edge of diaphysis; (5) wide and distally extended intercondylar groove. Differs from all extant Pelecanus species in lacking a slight sinistral torsion of the proximal half of the tibiotarsus along the long axis that exposes the attachment site for the medial gastrocnemius muscle (= musculus gastrocnemius pars medialis) in cranial view, possession of a medial edge of the extensor canal that is approximately in line with the lateral edge of the medial condyle, a weakly developed attachment site for the medial gastrocnemius muscle, and a deeply excavated and expanded pneumatic opening in the fossa flexoria. Differs from Pelecanus erythrorhynchos, P. onocrotalus, and P. crisupus in its smaller size (though tibiotarsi are similar in proportion; Fig. 4), being approximately similar to P. occidentalis and slightly smaller than P. rufescens and P. philippensis (see Table 1). Differs from P. occidentalis, P. onocrotalus, and most specimens of P. erythrorhynchos in possessing a dorsal edge of the lateral cnemial crest that is sinuous rather than a near continuous curve. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Marsh 1875, Kiessling 2004, Bush and Bambach 2015, Benton 1983 | |||||
Age range: Priabonian or 37.71000 to 33.90000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Priabonian | Egypt (Fayum) | Eopelecanus aegyptiacus (type locality: 74738) |