The boundaries of the species are pushed by a whale


The weight of a whale: from fossils to a museum for Peruvian palaeontology (PLoS ONE 10, e0118409 (2015))

Amson and his colleagues are not claiming that P. colossus was the heaviest animal of all time. Amson wants to be clear about that: “We say it’s a challenger.” There are many steps that have to be taken to add up the weight of a living being from a fossil. In this case, the shape of the head isn’t known because its skull hasn’t been found. The animal has a bit of blubber, but how much? The researchers can only guess.

The evidence from bone thickness is what tells us about the transition of whales from land to sea. PLoS ONE 10, e0118409 (2015).

Extracting the behemoth ribs and vertebrae from the hard sediment took years. Salas-Gismondi says they did 20 expeditions. The heavy and large vertebra made it hard for them to collect two. The fossil is now part of the collection of the Natural History Museum in Lima.

The museum has become a hub for Peruvian palaeontology, according to Salas-Gismondi. He says that before we were a museum, foreign palaeontologists had collected fossils and taken them to their countries. Now, with a bigger team and funding, we can keep the fossils here.

The colossus whale (genus Pristis) from southern Peru: its regional implications and environmental impact on the oceans and the asteroid

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 is possible that it was skinnier. Amson says that it could have been longer or more fat.

Amson thinks that P. colossus would have looked very much like a person. He thinks it would be like a giant sausage.

A. Collareta, A. A rhinopristiform sawfish (genus Pristis) from the middle Eocene (Lutetian) of southern Peru and its regional implications. Carnets Géol. 20, 91–105 (2020).

Thornburg, T. & Kulm, L. D. Sedimentary basins of the Peru continental margin: structure, stratigraphy, and Cenozoic tectonics from 6°S to 16°S latitude. There are several things that can be summed up in one word: am. Geol. Soc. Am. 154, 393–422 (1981).

In circum-Pacific energy and mineral resources, R. B., G., and A. are authors. The American Association of Petroleum Geologists was formed in 1976.

MorphoMuseuM: A heavy-weight whale pushes the boundaries of skeletal morphology in Cetacea and Mammalia

The evolution of the skeleton is a potential key innovation in modern cetaceans. Proc. R. Soc. B 286, 20191771 (2019).

Bianucci, G. et al. A whale is pushing the boundaries of paleontologist Giovanni. The journal is titled MorphoMuseuM and it can be found ondoi.org.

The piecewiseSEM is a model for ecology, evolution, and systematics. Methods Ecol. Evol. 7, 573–579 (2016).

Saarinen, J. et al. Patterns of maximum body size evolution in Cenozoic land mammals: eco-evolutionary processes and abiotic forcing. Proc. R. Soc. B 281, 20132049 (2014).

Robineau, D. & Buffrénil, V. de. Trois données sur la squelette ( Cetacea andMammalia). Can. J. Zool. 71, 828–834 (1993).

Buffrénil, V. de, Collet, A. & Pascal, M. Ontogenetic development of skeletal weight in a small delphinid, Delphinus delphis (Cetacea, Odontoceti). In 1985 Zoomorphology 105 was published.

Source: A heavyweight early whale pushes the boundaries of vertebrate morphology

Bone hydration: a micro-histochemical study of an early whale: I. Structure of the squelette du dugong, Dugong dugon (Müller) (Sirenia,

R. Tacutu and others were involved in the project. Human Ageing Genomic Resources: integrated databases and tools for the biology and genetics of ageing. Nucleic Acids Res. 41, D1027–D1033 (2013).

Buffrénil, V. de & Schoevaert, D. Données quantitatives et observations histologiques sur la pachyostose du squelette du dugong, Dugong dugon (Müller) (Sirenia, Dugongidae). Can. J. Zool. 67 was published in 1989.

The structure and volume of the squeletiques is a part of the delphinid (Delphinus delphis L.). Can. J. Zool. 64 was published in 1986.

How can we evaluate bone hydration, what can it tell us, and is it an effective therapeutic target? Bone Rep. 16, 101161 (2022).

Source: A heavyweight early whale pushes the boundaries of vertebrate morphology

Microanatomy of Amniote Ripples in the Upper Qasr el-Sagha Formation

A study on the Microanatomical diversity of amniote ribs. There is a book called Biol. J. Linn. There is a report on the topic of 118, 715–733.

Stein, K. & Sander, P. M. in Methods in Fossil Preparation: Proceedings of the First Annual Fossil Preparation and Collections Symposium (eds Brown, M. A. et al.) 69–80 was in the petrified forest national park.

Blott, S. J. & Pye, K. GRADISTAT: a grain size distribution and statistics package for the analysis of unconsolidated sediments. The Earth is on the ocean. Process. Landf. 26, 1237–1248 (2001).

Agnini, C. et al. The Paleogene calcareous nannofossils are from both the low and middle latitudes. Newsl. Stratigr. 47,131,181 were published last year.

Lovegrove, B. G. & Mowoe, M. O. The evolution of mammal body sizes: responses to Cenozoic climate change in North American mammals. J. Evol. There are 26, 1317–1329 illustrations in the books of the Biol.

Ancestral body plan of a marine reptile. iScience 25, 105635 (2022).

The swimming kinematics of thefloridamanate are analyzed by Fish. J. Exp. There were 2 articles in Biol. 210, and 241-212-2007.

Amson, E., Billet, G., and Muizon, C. de. Changes to bone structure can be caused by aquatic lifestyle in extinct sloths. Proc. R. Soc. B 285 was issued on Friday, February 1st.

A new archaeocete has been found from the upper Qasr el-Sagha Formation in Egypt. Contrib. Mus. Paleontol. Univ. Michigan 31, 355–372.

Clementz, M. T., Goswami, A., Gingerich, P. D. & Koch, P. L. Isotopic records from early whales and sea cows: contrasting patterns of ecological transition. J. vertebr. There were 355 Paleontol’s in 2006

Taylor, M. A. Functional significance of bone ballastin in the evolution of buoyancy control strategies by aquatic tetrapods. Hist. Biol. 14, 15–31 (2000).

Buffrénil, V. de, Ricqlès, A., de, Ray, C. E. & Domning, D. P. Bone histology of the ribs of the archaeocetes (Mammalia: Cetacea). J. Vertebr. Paleontol. 10, 455–466 (1990).

The history of rare diseases is explored in the oldest case of osteopetrosis. There are 8 journals related to Diabetes in the world.

Source: A heavyweight early whale pushes the boundaries of vertebrate morphology

Role of intervertebral and epiphyseal fusion in a hog badger (Arctonyx collaris)

Anné, J., Tumarkin-Deratzian, A. R., Cuff, H. J., Orsini, P. & Grandstaff, B. Acromegaly in a hog badger (Arctonyx collaris). Proc. Acad. Nat. The journal of Phila. 169, 49–56 2019.

Moran, M M. cetaceans and mammals have a fusion of the intervertebrals and epiphyseals. J. Mamm. Evol. 22, 93–109 was published in 2015.

Burin, G., Park, T., James, T. D., and Slater, G.J. The dynamic adaptive landscape of cetacean body size. Curr. Biol. https://doi.org/10.1016/j.cub.2023.03.014 (2023).

The stomach contents of the Basilosaurus isis were studied. PLoS ONE 14, e0209021 (2019).