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Suggested Group: Drepanosaurs
Topic Started: Feb 26 2016, 03:24 PM (319 Views)
GlarnBoudin
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Why not add drepanosaurs as one of the faunal groups found on the islands? They were small and fragile enough that we can just say that they were really common and that there just aren't any good fossils of them, and there's a lot of potential for them, especially if we just go with basal species like Hypuronector.

I could see some species becoming koala-like or sloth-like herbivores, armored pangolin-like creatures, even gliding and burrowing forms.

So what do you guys think?
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Vorsa
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We could but rhynchocephalians may be competitors in some areas.
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ForceofHabit
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Not to mention that drepanosaurs were a Late Triassic clade that was already extinct by the time the archipelago's second faunal exchange took place.
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GlarnBoudin
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Well, we only have five species of the little guys. It's not too big of a stretch to say that some survived long enough to be part of the faunal exchange.

Also, how would rhynchocephalians compete with them?
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LittleLazyLass
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If any group should be added I still say poposaurs.
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ForceofHabit
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Quote:
 
Well, we only have five species of the little guys. It's not too big of a stretch to say that some survived long enough to be part of the faunal exchange.


A fair enough point, I suppose, but you also have to consider that:

1. If drepanosaurs did manage to survive to the end of Late Triassic, it's highly likely that the Triassic-Jurassic extinction event wiped them out.

2. We can't just make up ancestors because we want a species on the island. If there is no evidence of that particular clade existing in that region of the world at that time, then it can't reasonably be included.

3. There really isn't any room for drepanosaurs at this stage. Most, if not all, of the arboreal niches have been filled by other groups. If they were to be included, then they'd face heavy competition from arboreal dimorphodonts, eosimians, herpetotherids, morgies, rhynchocephalians, coelophysids, dicynodonts, etc...
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Beetleboy
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As much as I love drepanosaurs, I agree with ForceofHabit.
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