ArticlePloS one2014
Fossil dolphin Otekaikea marplesi (latest Oligocene, New Zealand) expands the morphological and taxonomic diversity of Oligocene cetaceans.
Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed.
- Strontium isotopes reveal a globally unique assemblage of Early Miocene baleen whales.Journal of the Royal Society of New Zealand · 2024Article
- A new tiny fossil penguin from the Late Oligocene of New Zealand and the morphofunctional transition of the penguin wing.Journal of the Royal Society of New Zealand · 2024Article
- A new fossil dolphin with tusk-like teeth from New Zealand and an analysis of procumbent teeth in fossil cetaceans.Journal of the Royal Society of New Zealand · 2024Article
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- A new dolphin with tusk-like teeth from the late Oligocene of New Zealand indicates evolution of novel feeding strategies.Proceedings. Biological sciences · 2023Article
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- Extensive Diversity and Disparity of the Early Miocene Platanistoids (Cetacea, Odontoceti) in the Southeastern Pacific (Chilcatay Formation, Peru).Life (Basel, Switzerland) · 2020Article
- A new large squalodelphinid (Cetacea, Odontoceti) from Peru sheds light on the Early Miocene platanistoid disparity and ecology.Royal Society open science · 2018Article
- A new fossil dolphinRoyal Society open science · 2017Article
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Authors and funding
2 authors.
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Abstract
The Oligocene Epoch was a time of major radiation of the Odontoceti (echolocating toothed whales, dolphins). Fossils reveal many odontocete lineages and considerable structural diversity, but whether the clades include some crown taxa or only archaic groups is contentious. The New Zealand fossil dolphin "Prosqualodon" marplesi (latest Oligocene, ≥23.9 Ma) is here identified as a crown odontocete that represents a new genus, Otekaikea, and adds to the generic diversity of Oligocene odontocetes. Otekaikea marplesi is known only from the holotype, which comprises a partial skeleton from the marine Otekaike Limestone of the Waitaki Valley. Otekaikea marplesi was about 2.5 m long; it had procumbent anterior teeth, and a broad dished face for the nasofacial muscles implicated in production of echolocation sounds. The prominent condyles and unfused cervical vertebrae suggest a flexible neck. A phylogenetic analysis based on morphological features places Otekaikea marplesi in the extinct group Waipatiidae, within the clade Platanistoidea. The phylogeny implies an Oligocene origin for the lineage now represented by the endangered Ganges River dolphin (Platanista gangetica), supporting an Oligocene history for the crown Odontoceti.
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