regainfreedom Posted February 13, 2010 Share Posted February 13, 2010 Hi Guys, I have just purchased this fossil fish but do not know what species it is. It is from Madagascar, age unknown. Link to comment Share on other sites More sharing options...
regainfreedom Posted February 13, 2010 Author Share Posted February 13, 2010 More pictures. Close up of scales. Link to comment Share on other sites More sharing options...
regainfreedom Posted February 13, 2010 Author Share Posted February 13, 2010 More pictures. Link to comment Share on other sites More sharing options...
regainfreedom Posted February 13, 2010 Author Share Posted February 13, 2010 More pictures. Link to comment Share on other sites More sharing options...
glacialerratic Posted February 13, 2010 Share Posted February 13, 2010 I have no idea, but I like it! Madagascar fossil nodules! How cool is that? Got any more? Link to comment Share on other sites More sharing options...
oilshale Posted February 13, 2010 Share Posted February 13, 2010 (edited) I have no idea, but I like it! Madagascar fossil nodules! How cool is that? Got any more? Can you figure out where approximately the dorsal fin is? There are a couple of Madagascarian fish in my album in the gallery: Australosomus merlei http://www.thefossilforum.com/index.php?app=gallery&module=images§ion=viewimage&img=8607 Boreosomus gilioti http://www.thefossilforum.com/index.php?app=gallery&module=images§ion=viewimage&img=8605 http://www.thefossilforum.com/index.php?app=gallery&module=images§ion=viewimage&img=8611 Ecrinesomus dixoni http://www.thefossilforum.com/index.php?app=gallery&module=images§ion=viewimage&img=8526 http://www.thefossilforum.com/index.php?app=gallery&module=images§ion=viewimage&img=8580 Perleidus madagascariensis http://www.thefossilforum.com/index.php?app=gallery&module=images§ion=viewimage&img=8609 Piveteauia madagascariensis http://www.thefossilforum.com/index.php?app=gallery&module=images§ion=viewimage&img=8528 Parasemionotus, Pteronisculus, Whiteia (a coelacanth) and Saurichthys are missing - I will post them later when I am back in Germany (right now I am in Mexico and can't really help you without my computer). Lehmann published a couple of fish in a rather exotic periodical (also in French). If you like, I can send you a copy (100 pages or so...) by email (.pdf). Lehman J.-P., 1952 - Etude complementaire des Poissons de l'Eotrias de Madagascar. Kunge. Vetensk. Ak. Handt 1952, scr. 4, 2 (6), Thomas Edited February 13, 2010 by oilshale 1 1 Be not ashamed of mistakes and thus make them crimes (Confucius, 551 BC - 479 BC). Link to comment Share on other sites More sharing options...
pleecan Posted February 13, 2010 Share Posted February 13, 2010 Regainfreedom: Nice fish fossil I am also interested in the id.... Thomas: Thank you very much for posting your links.... I too have a Madagascar fish in transit from a Swiss dealer.... will post in the comming days when the Item arrives... this is a very educational thread. Regards, Peter Link to comment Share on other sites More sharing options...
regainfreedom Posted February 14, 2010 Author Share Posted February 14, 2010 I have no idea, but I like it! Madagascar fossil nodules! How cool is that? Got any more? Thank you! I have another which I have yet to open =) Link to comment Share on other sites More sharing options...
bubonius Posted February 14, 2010 Share Posted February 14, 2010 I love madagascar fossil fishes it's very intersting on his nodule concretion Link to comment Share on other sites More sharing options...
oilshale Posted February 18, 2010 Share Posted February 18, 2010 Ok, as promised: Australosomus is easy to recognize: Small to medium size fish (~ 10 to 15cm / 4 to 6"), fusiform body, relatively small head with a slightly rounded snout. Its dorsal fin is located in the posterior fourth of the body. Caudal fin divided with wide lobes. Scales on the flanks are noticeably stalk-shaped. 1 Be not ashamed of mistakes and thus make them crimes (Confucius, 551 BC - 479 BC). Link to comment Share on other sites More sharing options...
oilshale Posted February 18, 2010 Share Posted February 18, 2010 Also easy to recognize: Ecrinesomus dixoni Small fish with a rounded, laterally flattened body. Snout flattened. Dorsal and anal fins broad based, attached behind the body's midpoint. Caudal fin large, deeply divided (very rare to see). 1 Be not ashamed of mistakes and thus make them crimes (Confucius, 551 BC - 479 BC). Link to comment Share on other sites More sharing options...
oilshale Posted February 18, 2010 Share Posted February 18, 2010 Boreosomus gillioti Small to medium sized fish (10 to 20 cm / 4 to 8"). Slender body, dorsal fin small, located before the body's midpoint. Caudal fin divided. Strong, rectangular scales. 1 Be not ashamed of mistakes and thus make them crimes (Confucius, 551 BC - 479 BC). Link to comment Share on other sites More sharing options...
oilshale Posted February 18, 2010 Share Posted February 18, 2010 Parasemionotus labordei Small fish (up to 15cm / 6") with a rounded body, somewhat thickset appearance. Broad but short head. Dorsal fin attached to the posterior half of the body. Pectoral and anal fins small. Caudal fin moderately divided. Eyes remarkably large. 1 Be not ashamed of mistakes and thus make them crimes (Confucius, 551 BC - 479 BC). Link to comment Share on other sites More sharing options...
pleecan Posted February 18, 2010 Share Posted February 18, 2010 Thanks for posting Thomas! Good reference pictures of the various Madagascar fish... PL Link to comment Share on other sites More sharing options...
oilshale Posted February 18, 2010 Share Posted February 18, 2010 Perleidus madagascariensis medium sized fish with a somewhat thickset appearance. Bulky head. Its dorsal fin is located in the posterior third of the body. The reconstruction in Frickhinger, Fossil Atlas: Fishes, page 356 is incorrect (Might be a Redfieldius; the dorsal fin is attached behind the anal fin). 1 Be not ashamed of mistakes and thus make them crimes (Confucius, 551 BC - 479 BC). Link to comment Share on other sites More sharing options...
oilshale Posted February 18, 2010 Share Posted February 18, 2010 (edited) Pteronisculus cicatrosus Small fish with fusiform body (less than 10cm / 4" ?). Small dorsal fin, located slightly behind the midpoint of the body, diagonally opposite the anal fin. Big eyes. Relatively long and broad pectoral fins. Comparatively small scales. Edited February 18, 2010 by oilshale 1 Be not ashamed of mistakes and thus make them crimes (Confucius, 551 BC - 479 BC). Link to comment Share on other sites More sharing options...
oilshale Posted February 18, 2010 Share Posted February 18, 2010 (edited) Pteronisculus cicatrosus Forgot: Is also known under the synonym "Glaucolepis" I do not have a complete list of these madagascarian fish. As far as I remember there are also: Bobasatrania (seems to look similar to Ecrinesomus, but more rectangular body), Jacobulus, Paracentrophorus, Watsonulus, Saurichthys (so far, I have only seen heads without bodies), Birgeria. Piveteauia and Whitheia are both coelacanths. Have fun Thomas Edited February 18, 2010 by oilshale Be not ashamed of mistakes and thus make them crimes (Confucius, 551 BC - 479 BC). Link to comment Share on other sites More sharing options...
pleecan Posted February 18, 2010 Share Posted February 18, 2010 (edited) Hi: My first Madagascar Fish Concretion arrived....Parasemionotus labordei ???? Lower Triassic of Ambilobe, Madagascar and dates circa 254 million years old Attached are a few pictures... the fish concretion is approx 3.5" length. The fossilized fish has some extremely fine scale impressions.... reminds me of a trout ( must be good eating). Can anyone suggest a possible ID. Thanks. PL Edited February 18, 2010 by pleecan Link to comment Share on other sites More sharing options...
oilshale Posted February 19, 2010 Share Posted February 19, 2010 Hi: My first Madagascar Fish Concretion arrived....Pteronisculus cicatrosus???? Can anyone suggest a possible ID. Thanks. PL Hi pleecan, would guess so. Looks to me like a Pteronisculus. Nice fish, but don't bite into it! Thomas Be not ashamed of mistakes and thus make them crimes (Confucius, 551 BC - 479 BC). Link to comment Share on other sites More sharing options...
pleecan Posted February 19, 2010 Share Posted February 19, 2010 Thank you Thomas for the ID. Peter Link to comment Share on other sites More sharing options...
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