The Fossilman Posted March 1 Share Posted March 1 Link to comment Share on other sites More sharing options...
trilobites_are_awesome Posted March 1 Share Posted March 1 Whats the size and what is the locality? To me this appears to just a rock. Cheers! James Link to comment Share on other sites More sharing options...
The Fossilman Posted March 1 Author Share Posted March 1 The rock is app 18 inches and found in an Alberta grave l pit. Link to comment Share on other sites More sharing options...
Kane Posted March 1 Share Posted March 1 Topic moved to Fossil ID ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
fifbrindacier Posted March 1 Share Posted March 1 Hi, can you show us close-ups of the bumps ? "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
The Fossilman Posted March 1 Author Share Posted March 1 Close up pics Link to comment Share on other sites More sharing options...
jpc Posted March 1 Share Posted March 1 Interesting rock. No idea what it is. Link to comment Share on other sites More sharing options...
The Fossilman Posted March 1 Author Share Posted March 1 2 hours ago, The Fossilman said: Link to comment Share on other sites More sharing options...
Fossildude19 Posted March 1 Share Posted March 1 What is the illustration of? I can guarantee you it isn't a fossil soft tissue item. 3 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
CDiggs Posted March 1 Share Posted March 1 4 minutes ago, Fossildude19 said: What is the illustration of? I can guarantee you it isn't a fossil soft tissue item. The bronchioles and alveoli of a lung I believe, which I agree this item definitely isn't for all its similarity of appearance. 1 Link to comment Share on other sites More sharing options...
daves64 Posted March 1 Share Posted March 1 Pre-historic grapeshot? 2 Accomplishing the impossible means only that the boss will add it to your regular duties. Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted March 2 Share Posted March 2 Alveoli are half of a centimeter in diameter or less. These appear to be a bit larger. The size of alveoli does not increase proportionately with the size of the animal. The amount of lung tissue increases. 2 Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
hemipristis Posted March 2 Share Posted March 2 Algal mound? Concretion Custer 1 'Those who cannot remember the past are condemned to repeat it.' George Santayana Link to comment Share on other sites More sharing options...
Necropedia Posted March 2 Share Posted March 2 It's hard to say without seeing a fresh rock surface or being able to see what kind of rock it is. However it does appear that some of the lumps are imbedded in a slightly darker matrix which suggests it may be a conglomerate composed of rounded clasts cemented together by the darker matrix. 1 1 Link to comment Share on other sites More sharing options...
Necropedia Posted March 2 Share Posted March 2 If the rock is crystalline ( suggesting magmatic origin) I would look into tonalite or rocks similar to that. Link to comment Share on other sites More sharing options...
fifbrindacier Posted March 2 Share Posted March 2 13 hours ago, CDiggs said: The bronchioles and alveoli of a lung I believe, which I agree this item definitely isn't for all its similarity of appearance. 8 hours ago, Mark Kmiecik said: Alveoli are half of a centimeter in diameter or less. These appear to be a bit larger. The size of alveoli does not increase proportionately with the size of the animal. The amount of lung tissue increases. I agree, this is a pareildolia. "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
digit Posted March 2 Share Posted March 2 20 hours ago, Mark Kmiecik said: Alveoli are half of a centimeter in diameter or less. These appear to be a bit larger. The size of alveoli does not increase proportionately with the size of the animal. The amount of lung tissue increases. Indeed! Human alveoli are around 200 micrometers (0.2 mm) in diameter. Whale alveoli do not scale up as does the heart (basically a necessarily larger pump for a larger animal). Whale alveolar sacs are on the order of 500 micrometers (0.5 mm) in diameter. Larger, but not proportionally so. If a whale had alveoli the size of the botryoidal lumps on the concretion shown above (something like 10-20 cm) there would not be enough surface area for gas exchange and whales would not be able to hold their breath for the astounding 30-90 minutes that they require for deep diving and calling. Just because a concretion vaguely resembles a magnified alveolar cluster does not in any way shape of fashion mean that there is any connection of a botryoidal concretion and the hypothetical soft-tissue preservation of a whale lung. Reality just doesn't support your assertion. Again, pareidolia and a misunderstanding of both animal physiology and the various methods of permineralization (fossilization). Sorry, but science says 'No' to your supposed 'similarity'. Happy to discuss fossils and science but no need to belabor pareidolia influenced misunderstandings. Cheers. -Ken Link to comment Share on other sites More sharing options...
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