A whale pushes the boundaries of the animal kingdom
Transition from land to sea: evidence from bone microstructure. A posthumous account of the discovery of a whale fossil in the Pisco Formation, Lima, Peru
Nicholas Pyenson is a Paleontologist at the museum in Washington DC, and he says that P. colossus is very weird. He says it will tell a new story about the evolution of gigantism in whales. The blue whale has the heaviest animal of all time, but he is not ready to give it that title. “The crown belongs to a blue whale,” he says. It is really hard to determine body weight for an extinct species. The skeletons are incomplete, Pyenson adds, “and we don’t really know how to put meat on bone for them”.
Houssaye, A., Tafforeau, P., Muizon, Cde & Gingerich, P. D. Transition of Eocene whales from land to sea: evidence from bone microstructure. The 10th edition of the journal, PLoS ONE 10, was published in 2015.
When the remains were first found years ago, in a fossil-rich deposit called the Pisco Formation, in the Ica Desert, a coastal area of Peru, palaeontologist and co-author Mario Urbina at the National Major University of San Marcos in Lima and his team weren’t even sure that they were bones. Urbina invited Salas-Gismondi, a long-time friend and colleague, to visit the partially excavated vertebrae around 2012. Mario said that maybe it was important that he found a giant thing. but I don’t know.’ He showed me the fossil in the wall of a hill.” The bones lacked the strength and density of typical bones. They looked “like rocks”, Salas-Gismondi says. The team felt confident that they were bones after they analysed them under a microscope.
Salas-Gismondi believes that the museum has become a hub for Peru palaeontology. Foreign paleontologists used to take fossils from their countries to the museum. The fossils can still stay here because we have a bigger team of palaeontologists.
Could Pseudostellar Whale have Looked Like a Giant Sausage in the Miocene?
The team chose to create a visual reconstruction of what the whale might have looked like, basing the head on skulls of related basilosaurid species, but they caution that some of the details are speculative. It could have been skinnier. But it also could have been quite a bit longer or fatter, Amson says.
Amson believes P. colossus would have looked like him in the flesh. He says it would be like a giant sausage.
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Palaeontologist Mario Urbina at National Major University of San Marcos in Peru has published a posthumous account of the discovery of a whale fossil in the Pisco Formation. Urbina said his team hadn’t even sure that they were bones. He added that it will tell a new story about the evolution of gigantism in whales.