Jorge Velez-Juarbeさんのイラストまとめ

Aquí les comparto este excelente hilo por la colega @MaryViglino! Personalmente fue un honor trabajar con este increíble grupo de colegas y muchas gracias a la editora @N_CastelblancoM!
Y como es #FossilFriday aquí un medley de mamíferos marinos extintos de Latinoamérica! https://t.co/9LTIsTCwGz

In physeteroids this part of the skull is where we find a complex suite of structures related to echolocation, mainly the melon and spermaceti organ. These structures are hypertrophied & rich in lipids, making them a great target for predators and scavengers! #WhaleWednesday 3/5

While #manatees are the only group of sirenians that invaded freshwater habitats, in odontocetes it has happened multiple times. In the Pebas Mega-Wetland System we find platanistoids and iniids. Map from @PeruvianWhale et al (2020) https://t.co/EcTyazFCIC
#FossilFriday 4/8

One of the new species, Pontolis barroni, is named after our colleague John Barron from the @USGS in honor of his contributions to biostratigraphy of #California and the North Pacific! For this species we have males, females & juveniles!
#MarineMammalMonday 3/n

Just out today in Palaeontology: my PhD student, Atzcalli E. Hernández Cisneros, and I explore the paleobiogeography of toothed mysticetes from the North Pacific. @CicimarIpn @ThePalAss @NHMLA #MarineMammals
More here: https://t.co/3gnoYMfdmo

Baleen whales are known for their large size, but in the past some were relatively small. Here's the Oligocene baleen whale Fucaia goedertorum, its skull and mandibles are not much larger than the extant Pacific White-Sided Dolphin #FossilFriday #NHMLA #MarineMammals

#FossilFriday here's the newly described #Olympicetus avitus an Oligocene Odontocete from WA #MarineMammals #NHMLA https://t.co/TiO8d3oLzu