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AcroSauroTaurus β Helicoprion davisi
#eugeneodontid #chimaera #fish #helicoprion #shark #sharkweek
Published: 2017-07-27 21:06:51 +0000 UTC; Views: 4315; Favourites: 75; Downloads: 4
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Description
Shark Week drawing #1
Common Name: Buzz-saw Shark
Meaning: "spiral saw"
Length: 5.1-11.8 m (17-39 ft)
Lived: Permian North America, Australia, and Asia
Prey: belemnites, nautiloids
Family: Eugeneodontids
Named: 1940
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Comments: 21
I liked this depiction of the Helico and always thought it felt more accurate to tie Eugeneodonts with chimera-body forms than lamnidae body forms.
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Well, I'll be redrawing it with a more shark-like body, because its relative Fadenia has a full body fossil that shows eugeneodontids had more shark-like bodies, but were still closer to Chimaeras.
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While Helicorpion was a stem-chimaera, eugeneodontids were convergently evolved with sharks.
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Yes, I know. I got some feedback on it from Vitor Silva, there will be a new version coming later this week.
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I hear people say that a lot. Is there any actual evidence (just curious)?
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Tooth morphology indicates a diet of fast-moving prey
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I really don't see how that proves its convergent body plan......
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Another eugeneodontid, Fadenia has a full body fossil, showing a more shark-like body shape.
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Thats Β what I was looking for, thanks.
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Name one animal that chases down fish and squid and lacks a torpedo-shaped body.
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Thats not what I'm saying. I'm asking how we specifically know that it looks convergently like a shark. I'm not doubting you, I just want a reason
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Full body fossils apparently do exist.
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Glad to see a chimaera-like Helicoprion ! That changes from the classical shark reconstructions.
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The body is too Chimaera-like, Eugeneodontids had more shark-like bodies than what I have depicted. I found that out after I had drawn this.
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