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Post by creature386 on Sept 24, 2014 20:24:49 GMT 5
Btw. this is interesting, too: If this is true, nearly all known theropod fossils of the German limestone are from immatures. Wellnhoferia would be so far the only exception (provided it's really an adult). I am not sure how much this implies, given that the sample is not really high (apart from the Archaeopteryx specimens, we only have Sciurumimus). But the fact that really every Archaeopteryx species is immature is impressive. Are the Compsogathus and Juravenator specimens mature?
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Derdadort
Junior Member
Excavating rocks and watching birds
Posts: 267
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Post by Derdadort on Sept 24, 2014 20:38:02 GMT 5
Compsognathus and Juravenator are immature. There is one larger Compsognathus from France. This implies nothing special, I found it just interesting that the only dinosaurs we know from German limestone are mostly immature theropods and not respecting the quantity of the specimens after all five different species. Maybe it has something to do with the environment, but I don't know.
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Post by creature386 on Sept 24, 2014 20:45:12 GMT 5
I would say this is a fluke, I don't think these theropods had special nursery areas in the German limestone. Even though the idea is interesting.
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Derdadort
Junior Member
Excavating rocks and watching birds
Posts: 267
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Post by Derdadort on Sept 24, 2014 20:53:46 GMT 5
Yes, probably. I don't believe in "nursery areas" either, but I could imagine the likelihood for a immature specimen to fossilize is still greater than for an adult one. Besides is the German limestone still a marine deposit.
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Post by creature386 on Sept 25, 2014 19:18:16 GMT 5
I am not sure, but could this maybe hint a strong reproduction (R strategy) in small German theropods? I believe this explanation is weak, unless a high number of juveniles is also observed among their relatives, just an idea.
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Derdadort
Junior Member
Excavating rocks and watching birds
Posts: 267
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Post by Derdadort on Sept 25, 2014 20:40:14 GMT 5
I think I open a new thread extra for German respectively Middle European limestone, instead of spamming in the SVP topic (I'm tinkering with the idea of doing this anyway^^)
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Post by Grey on Sept 30, 2014 9:35:01 GMT 5
Don't know to post it, but just about the big whales, a gigantic Late Miocene mysticete skeleton has been located in Peru. It is estimated to be at least 22 metres long, with a skull about 4-5 m long and extremely wide at 2.5 m. I don't know if it will be collected because of the hard sediments and the location. But such a huge mysticete was not expected from even the Late Miocene.
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stomatopod
Junior Member
Gluttonous Auchenipterid
Posts: 182
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SVP 2014
Nov 7, 2014 2:26:37 GMT 5
via mobile
Grey likes this
Post by stomatopod on Nov 7, 2014 2:26:37 GMT 5
Nice Info, Grey. Some of the stuff at revealed at SVP seems to be phenomenal. Titanoboa was seemingly fully aquatic. Middle Jurassic snakes. Sauropod necks. And all that paravian stuff. Wish the SVP meeting was not that expensive. My sister asked me why I was not going there. Well, including travel expenses I could nearly get 2 weeks of AI in a much warmer place for about the same price.
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Post by theropod on Nov 7, 2014 3:58:41 GMT 5
Damnit! I was in Berlin just the week before. Why couldn’t this have taken place a week earlier?
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Post by creature386 on Nov 7, 2014 21:36:33 GMT 5
Was the meeting available to outstanding people anyway?
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Post by Infinity Blade on Nov 8, 2014 2:46:29 GMT 5
Titanoboa was fully aquatic?!
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Deleted
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Post by Deleted on Nov 8, 2014 7:23:20 GMT 5
Given that anacondas ~10% of it's size are already quite sluggish on land, I'm not surprised that Titanoboa turned out to be a full-fledged water snake.
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Post by theropod on Nov 8, 2014 14:53:25 GMT 5
creature386: My bad, I’m starting to confuse all those paleo-symposiums (e.g. SVP and SVPCA). The website indeed requires you to enter an institutional name (and also to make a payment ). What a pity!
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stomatopod
Junior Member
Gluttonous Auchenipterid
Posts: 182
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SVP 2014
Nov 20, 2014 7:44:41 GMT 5
via mobile
Post by stomatopod on Nov 20, 2014 7:44:41 GMT 5
So some more stuff I skimmed: Ceratosaurus might be a basal Abelisaurid. Elaphrosaurs are basal Noasaurids.
More evidence of Sciurumimus being a Megalosauroid. Juravenator has Ceratosaurid features! (I already call Scipionyx being an Allosaurid, like Cau once joked/hinter at).
Theres much more but I do not want to spoil everything.
Unfortunately I could not find anything on B. sibbaldina.
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Post by creature386 on Nov 20, 2014 23:24:13 GMT 5
Didn't you already mention the Sciurumimus stuff? Anyway, this sounds fascinating. Looks like we will finally understand more of ceratosaur phylogeny.
P.S. I just did some skimming work as well and I can tell you that Alamosaurus had osteoderms.
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