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Masracetus
Taxonomy
Masracetus was named by Gingerich (2007).
It was assigned to Dorudontinae by Schouten (2011) and Gao and Ni (2015); and to Basilosauridae by Gingerich (2007), Martinez-Cáceres and Muizon (2011), El-kheir et al. (2013), Uhen (2013), Marx et al. (2016), Martínez-Cáceres et al. (2017), Berta (2017), Uhen (2018) and Zalmout et al. (2020).
It was assigned to Dorudontinae by Schouten (2011) and Gao and Ni (2015); and to Basilosauridae by Gingerich (2007), Martinez-Cáceres and Muizon (2011), El-kheir et al. (2013), Uhen (2013), Marx et al. (2016), Martínez-Cáceres et al. (2017), Berta (2017), Uhen (2018) and Zalmout et al. (2020).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2007 | Masracetus Gingerich p. 375 |
| 2011 | Masracetus Martinez-Cáceres and Muizon |
| 2011 | Masracetus Schouten p. 18 |
| 2013 | Masracetus El-kheir et al. p. 462 |
| 2013 | Masracetus Uhen p. 4 figs. Figure 9 |
| 2015 | Masracetus Gao and Ni p. 156 figs. Table 1 |
| 2016 | Masracetus Marx et al. p. 101 |
| 2017 | Masracetus Berta p. 159 |
| 2017 | Masracetus Martínez-Cáceres et al. p. 11 |
| 2018 | Masracetus Uhen |
| 2020 | Masracetus Zalmout et al. p. 128 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. D. Gingerich 2007 | Masracetus markgrafi is distinguished from other archaeocetes by the size and shape of its lumbar vertebrae. These are large, but relatively short compared to their width and height. Lumbar centra are nearly the diameter (width and height) of lumbar centra of Basilosaurus isis, but centra of Masracetus are less than half the length of the latter. Masracetus markgrafi lumbar centra are similar to those of ‘Zeuglodon’ brachyspondylus Müller (1849: 26), but they are not as large. They also differ in being less wide relative to their length and height. Masracetus is larger than Cynthiacetus Uhen (2005), and it has a lower lumbar length-to-width ratio; Cynthiacetus is more like Dorudon than it is like Masracetus in both respects. |