Discover Top Posts Tagged with #siamosaurus

Some recent commissions I've worked on!

#gekko.art #dinosaur #paleoart #spinosaurus #siamosaurus #commission

S is for...?

All of the S names in my Paleo Party - Mesozoic Edition! I have sooooooo many S names (Specifically in this group) I needed to make separate posts for the Eras lol

Are there any I'm missing?

Stickers || Phone Wallpapers Masterlist

Siamosaurus Sketch

Siamosaurus, only known from one fossil, that being just a fucking stupid useless little tooth. On top of that it's one of two asian spinosaurids, the other being ichthyovenator. So it's really hard to know what it looked like and I had to improvise quite a bit with it. Anyway another old sketch.

#dinosaur #paleoart #paleoblr #drawing #siamosaurus #spinosauridae

A partial dinosaur tooth of an Ichthyovenator laosensis from the Grès supérieurs Formation in the Savannakhet Province of Laos. The tooth has around 44 ridges which distinguishes it from the tooth taxon, cf. Siamosaurus sp. The morphology described or assigned to Icthyovenator (from the similarly aged Khok Kruat Formation) have a ridge total (both sides combined) of 42-64, while 22-32 ridges are assigned to teeth similar to those of the tooth taxon Siamosaurus suteethorni from the older Sao Khua Formation. While this may be sample bias, the vast majority of teeth from the Grès supérieurs Formation appear to be cf. Siamosaurus rather than Ichthyovenator.

Dinofact #100

Siamosaurus was the first spinosaurid dinosaur reported in Asia. It is known confidently only from teeth, and it yet undetermined if two partial spinosaurid skeletons from Thailand and an isolated tooth from Japan also belong to the genus.

Source: Wikipedia

Spinosauridae Series part 2!

And this completes all the spinosaur species that are known from anything even approaching decent material, and even that’s a bit of a stretch! This clade is a bit of a trash pile sometimes.

Featuring from top to bottom:

A very hypothetical reconstruction of Irritator challengeri. All we know from this spinosaur is a skull, so whatever the body looked like is pretty much a total guess. I’ve modeled it after Spinosaurus since they’re closely related in the spinosaur phylogeny, but there’s really no way of knowing what the rest of the body looked like.

Ichthyovenator laosensis, a spinosaud with a weird notched sail and what could possibly be a paddle tail similar to that of Spinosaurus.

And finally, the Indeterminate Phuwiang Spinosaurid (IPS), based on a partial skeleton from Phuwiang, Thailand. It has been referred to Siamosaurus, but since that taxon is a complete garbage fire (see my previous post on the matter) this skeletal material cannot be confidently assigned to Siamosaurus. Honestly even with how fragmentary the IPS is, it was still easier than drawing Irritator, because at least we know roughly what body shape IPS had.

#dinosaurs #spinosaur #irritator #ichthyovenator #Indeterminate Phuwiang Spinosaurid #siamosaurus #palaeoart #paleoart #palaeontology #paleontology #palaeoblr #my art #digital art

Siamosaurus suteethorni

By Michael B. H., CC BY-SA 3.0

Etymology: Reptile from Siam

First Described By: Buffetaut & INgavat, 1986

Classification: Dinosauromorpha, Dinosauriformes, Dracohors, Dinosauria, Saurischia, Eusaurischia, Theropoda, Neotheropoda, Averostra, Tetanurae, Orionides, Megalosauroidea, Megalosauria, Spinosauridae, Spinosaurinae

Status: Extinct

Time and Place: About 129 million years ago, in the Barremian of the Early Cretaceous

Siamosaurus is known from the Sao Khua Formation of Thailand

Physical Description: Siamosaurus is not known from extensive fossil remains - indeed, it is known from only teeth that are very similar to those of Spinosaurus, leading to its classification as a close relative. So, if it is a dinosaur like Spinosaurus, it probably would have been a bipedal theropod, with long front limbs ending in extensive claws for grabbing fish. Siamosaurus would have probably had a long, crocodile-esque jaw,and some sort of sail or hump on its back. It would have most likely been primarily scaly. Beyond that, we can’t be entirely sure what Siamosaurus would have looked like.

Diet: Siamosaurus would have primarily eaten fish.

Behavior: Like Spinosaurus, Siamosaurus would have spent most of its time near or in the water, hunting for fish and swimming about in its ecosystem looking for more food. It probably would have been at least somewhat solitary, given the difficulty of fishing as a lifestyle for shoreline animals - crocodilians and bears, for example, tend to fish alone. But, Siamosaurus probably would have been fairly active in lifestyle, and probably would have taken care of its young. It may have been semiaquatic, but this has been disputed for other Spinosaurs.

By Offy & PaleoGeekSquared, CC BY-SA 4.0

Ecosystem: Siamosaurus lived in a muddy, tropical forest, filled with a variety of hot-weather plants right on the equator. This ecosystem featured a variety of fish and sharks, including such famous ones as Lepidotes and Hybodus. These fish would have been ideal prey for Siamosaurus. Turtles were frequent along the river ecosystem, and may have also been fed upon by Siamosaurus. There were competitors, too - pseudosuchians such as Theriosuchus, Khoratosuchus, Goniopholis, and Siamosuchus. Other dinosaurs also made up the ecosystem, though none are particularly well known - the titanosaur Phuwiangosaurus, the iguanodonts Siamodon and Sirindhorna, the carnosaur Siamotyrannus, and the ornithomimosaur Kinnareemimus. The titanosaur Phuwiangosaurus, in particular, was very common in this environment.