Tosha Hollmann
@toshahollmann.bsky.social
Paleoartist and fossil prep technician specializing in marine reptiles. Focused on studying ichthyosaur phylogeny + taxonomy. He/Him, views my own.
These look fantastic!! Just a small note, but Qianichthyosaurus and the rest of toretocnemidae are not members of Parvipelvia, rather placing just outside it :)
March 9, 2025 at 6:41 AM
These look fantastic!! Just a small note, but Qianichthyosaurus and the rest of toretocnemidae are not members of Parvipelvia, rather placing just outside it :)
Scale-like (or fibrous) structures are also documented on the leading edge of some ichthyosaur fins — not commented on much in literature but potentially an interesting avenue for future research
February 6, 2025 at 5:53 PM
Scale-like (or fibrous) structures are also documented on the leading edge of some ichthyosaur fins — not commented on much in literature but potentially an interesting avenue for future research
The neural arches, which are on the dorsal surface of the vert, do the most to restrict motion of the vertebral column. So there’s just more in the way when the back flexes up rather than down
November 18, 2024 at 7:15 PM
The neural arches, which are on the dorsal surface of the vert, do the most to restrict motion of the vertebral column. So there’s just more in the way when the back flexes up rather than down
No— Platypterygius is a Cretaceous taxon, and this is Jurassic. You can also tell the fossil doesn’t belong to a derived platypterygiid because of the rounded phalanges, and that it isn’t an ophthalmosaur because of the notching on the anterior digit (something ophthalmosaurs lose)
November 4, 2024 at 4:21 PM
No— Platypterygius is a Cretaceous taxon, and this is Jurassic. You can also tell the fossil doesn’t belong to a derived platypterygiid because of the rounded phalanges, and that it isn’t an ophthalmosaur because of the notching on the anterior digit (something ophthalmosaurs lose)