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Post by creature386 on Mar 15, 2014 20:28:50 GMT 5
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Post by theropod on Apr 3, 2014 21:06:12 GMT 5
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Derdadort
Junior Member
Excavating rocks and watching birds
Posts: 267 
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Post by Derdadort on Apr 7, 2014 0:32:03 GMT 5
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Post by creature386 on Apr 7, 2014 20:01:10 GMT 5
Most of us already know this (I often used it as a reference in the profiles), but it is really good to have it in this thread. Dunno how I could forget it, so many more minor papers and not this?
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Derdadort
Junior Member
Excavating rocks and watching birds
Posts: 267
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Post by Derdadort on Apr 7, 2014 20:17:00 GMT 5
Oops, I didn't noticed that. I just thought, because I only found it behind a paywall at first.
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Post by theropod on May 3, 2014 14:01:40 GMT 5
link.springer.com/article/10.1007/s00114-014-1173-3#page-1Complex rostral neurovascular system in a giant pliosaur Abstract Pliosaurs were a long-lived, ubiquitous group of Mesozoic marine predators attaining large body sizes (up to 12 m). Despite much being known about their ecology and behaviour, the mechanisms they adopted for prey detection have been poorly investigated and represent a mystery to date. Complex neurovascular systems in many vertebrate rostra have evolved for prey detection. However, information on the occurrence of such systems in fossil taxa is extremely limited because of poor preservation potential. The neurovascular complex from the snout of an exceptionally well-preserved pliosaur from the Kimmeridgian (Late Jurassic, c. 170 Myr ago) of Weymouth Bay (Dorset, UK) is described here for the first time. Using computed tomography (CT) scans, the extensive bifurcating neurovascular channels could be traced through the rostrum to both the teeth and the foramina on the dorsal and lateral surface of the snout. The structures on the surface of the skull and the high concentrations of peripheral rami suggest that this could be a sensory system, perhaps similar to crocodile pressure receptors or shark electroreceptors. Is the number 6 of the papers published in 2014. |
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Deleted
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Post by Deleted on May 4, 2014 23:38:34 GMT 5
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Derdadort
Junior Member
Excavating rocks and watching birds
Posts: 267
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Post by Derdadort on May 5, 2014 11:59:23 GMT 5
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Post by creature386 on May 5, 2014 19:26:29 GMT 5
^LOL. I am looking forward to its size next decade, after Saudi Arabia completes the Kingdom Tower.  |
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Post by Grey on May 5, 2014 21:19:06 GMT 5
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Post by creature386 on May 5, 2014 21:36:29 GMT 5
I remember the symphysis related matters in the P. kevani paper. If the paper studies that in detail, elosha's wish he expressed in the P. kevani profile could become truth.
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Post by Grey on May 18, 2014 21:47:25 GMT 5
link.springer.com/article/10.1007%2Fs00114-014-1182-2Bony outgrowths on the jaws of an extinct sperm whale support macroraptorial feeding in several stem physeteroids Olivier Lambert, Giovanni Bianucci, Brian L. Beatty Several extinct sperm whales (stem Physeteroidea) were recently proposed to differ markedly in their feeding ecology from the suction-feeding modern sperm whales Kogia and Physeter. Based on cranial, mandibular, and dental morphology, these Miocene forms were tentatively identified as macroraptorial feeders, able to consume proportionally large prey using their massive teeth and robust jaws. However, until now, no corroborating evidence for the use of teeth during predation was available. We report on a new specimen of the stem physeteroid Acrophyseter, from the late middle to early late Miocene of Peru, displaying unusual bony outgrowths along some of the upper alveoli. Considering their position and outer shape, these are identified as buccal maxillary exostoses. More developed along posterior teeth and in tight contact with the high portion of the dental root outside the bony alveoli, the exostoses are hypothesized to have developed during powerful bites; they may have worked as buttresses, strengthening the teeth when facing intense occlusal forces. These buccal exostoses further support a raptorial feeding technique for Acrophyseter and, indirectly, for other extinct sperm whales with a similar oral apparatus (Brygmophyseter, Livyatan, Zygophyseter). With a wide size range, these Miocene stem physeteroids were major marine macropredators, occupying ecological niches nowadays mostly taken by killer whales.
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Post by theropod on May 19, 2014 0:52:45 GMT 5
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Deleted
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Post by Deleted on May 23, 2014 4:43:13 GMT 5
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Post by creature386 on Jun 11, 2014 1:50:53 GMT 5
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