oilshale Posted April 28, 2018 Share Posted April 28, 2018 (edited) First of all, the list of fish found in Madagascar - there are more than 30 species! So many that I can't treat all of them (and I've never seen some of them). There is relatively old, but good literature on it - Lehman has written one of the most comprehensive publications on this subject: J.-P.Lehman (1952) Etude Complementaire des Poisson de L'Eotrias de Madagascar. Kungl. Svenska Vetenskapsakademiens Handlingar. Fjärde Serien Bd 2 No 6 (in French, 244 pages, 340MB!) Australosomus merlei Piveteau, 1934 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. Ecrinesomus dixoni Woodward, 1910 Medium sized fish with a rounded, laterally flattened body. Snout flattened. Dorsal and anal fins opposite and broad based. Attached behind the body's midpoint. Rhombic body. Caudal fin large, deeply divided. Often mixed up with the somehow similar looking Bobasatrania mahavavica. Unfortunately the head is not completely preserved. Bobasatrania mahavavica White, 1932 There's quite a confusion between Ecrinesomus and Bobasatrania. Even in publications the same reconstruction (the same drawing!) is sometimes labeled as Bobasatrania and sometimes as Ecrinesomus. In the first publication about Ecrinesomus, one Bobasatrania was mistakenly mixed in between. Bobasatrania has a crooked diamond-shaped body – while Ecrinesomus's anal and dorsal fins start directly opposite. Boreosomus gillioti Priem, 1924 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. Parasemionotus labordei Priem, 1924 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. Teffichthys madagascariensis Piveteau, 1934 (=Perleidus madagascariensis) Medium sized fish with a somewhat thickset appearance. Bulky head. Its dorsal fin is located in the posterior third of the body. Pteronisculus cicatrosus White, 1934 Small to medium fish with fusiform body (less than 15cm / 6" ?). 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. Pteronisculus macropterus White, 1933 In his 1933 paper, White described two new Pteroniscoids from Madagascar: Pteronisculus cicatrosus , which is rather common and the somewhat rarer Pteronisculus macropterus. According to White, P. macropterus is characterized by an "elongate-fusiform body; maximum depth rather less than length of head with opercular apparatus, and equal to one-quarter total length to base of caudal fin. length of pectoral fin exceeding distance between tip of snout and hinder margin of maxilla. Origin of dorsal fin above fortieth scale-row from pectoral girdle approximately. Scales in more than seventy vertical rows to base of caudal fin, and ornamented with oblique rugae only." Paracentrophorus madagascariensis Piveteau, 1940 Small fish (up to 15cm / 6") with a rounded body, somewhat thickset appearance. Dorsal fin attached to the posterior half of the body. Pectoral and anal fin relatively large. Anal fin starts well behind end of dorsal fin. Caudal fin moderately divided. Eyes remarkably large. Icarealcyon malagasium Beltan, 1984 Icarealcyon can be easily mixed up with Parasemionotus; characteristic are the huge pectoral fins. Due to its enormous pectoral fins, Icarealcyon malagasium was described by Beltan as a "poisson volant" - a "flying fish" - in the family Semonotidae (not related to what is now known as "flying fish" - these are Exocoetidae in the order Beloniformes). You would expect flying fish to be fast swimmers - the rather thickset appearance of Icarealcyon more likely hints to slow swimmers with relatively high maneuverability (comparable to Albertonia from British Columbia). Fig. C is Icarealcyon - the reconstruction is not quite correct. Saurichthys madagascariensis Piveteau, 1945 Medium sized fish with elongated, streamlined jaws. Head elongated. Dorsal fin almost at the end of the body, opposite the anal fin. Small scales. Whiteia woodwardi Moy-Thomas, 1935 Massive body. Pectoral fin attached slightly before the first dorsal fin. Piveteauia madagascariensis Lehman 1952 More slender body. Pectoral fin attached well before first dorsal fin lobe. Ventral fin opposite to first dorsal fin lobe. Have fun Thomas PS: If you are interested in Lehman's paper send me a PM with your email address (remember - 340MB!) Edited March 12, 2021 by oilshale 23 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...
Tidgy's Dad Posted April 28, 2018 Share Posted April 28, 2018 Brilliant. Very useful, this should be pinned. 2 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
SnazzyMax Posted April 28, 2018 Share Posted April 28, 2018 (edited) Brilliant, thank you so much for this comprehensive and detailed study of Triassic Malagasy fish, @oilshale. I've been trying to compare my own Malagasy fish with some of the specimens shown here, but I'm finding it quite hard to match them. Any help would be greatly appreciated! As @oilshale mentioned in another thread, the one in the 2nd image looks to be a Pteronisculus - I will try and post better images in a better light tomorrow. Hopefully one of them is Coelacanth! Thanks again! Images in highest quality: https://imgur.com/a/n46SHCD Edited April 28, 2018 by SnazzyMax 1 Link to comment Share on other sites More sharing options...
Ludwigia Posted April 28, 2018 Share Posted April 28, 2018 Excellent! Thanks, Thomas. I agree with Adam that this should be pinned. Do you agree @Fossildude19 ? 2 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
jpenn Posted April 29, 2018 Share Posted April 29, 2018 Excellent thread, thank you@oilshale ! I was actually thinking of making a similar one myself as I have several Sakamena fm. fishes (and more) to show. It is an exciting and relatively inexpensive fauna to collect but unfortunately not easy to find information on (a lot of the papers are not easily had.) This thread should serve as a good resource for people looking to get into this exciting post-extinction biota. 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 29, 2018 Share Posted April 29, 2018 20 hours ago, Tidgy's Dad said: Brilliant. Very useful, this should be pinned. 15 hours ago, Ludwigia said: Excellent! Thanks, Thomas. I agree with Adam that this should be pinned. Do you agree @Fossildude19 ? DONE! 1 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...
doushantuo Posted April 29, 2018 Share Posted April 29, 2018 30 -35 rows of fairly thick quadrilateral slightly obliquely arranged scales, semi-heterocercal tail, low pectoral fin insertion on the cleithrum, notes on ecology, comparison with Cypselurus. 4 Link to comment Share on other sites More sharing options...
The Amateur Paleontologist Posted May 7, 2018 Share Posted May 7, 2018 Thanks for the review of the Sakamena icthyofauna, I'm sure it'll be useful! Any chance of some literature on the Sakamena Fm. tetrapods? Opalised fossils are the best: a wonderful mix between paleontology and mineralogy! Q. Where do dinosaurs study? A. At Khaan Academy!... My ResearchGate profile Link to comment Share on other sites More sharing options...
DevonianDigger Posted May 7, 2018 Share Posted May 7, 2018 This is awesome, thanks for sharing! Now I just have to find all of these to add to my collection! Jay A. Wollin Lead Fossil Educator - Penn Dixie Fossil Park and Nature Reserve Hamburg, New York, USA Link to comment Share on other sites More sharing options...
RJB Posted May 11, 2018 Share Posted May 11, 2018 This is excellent!!! RB Link to comment Share on other sites More sharing options...
Fossildude19 Posted March 30, 2021 Share Posted March 30, 2021 Just a reminder to NOT post links to outside sales sources. 1 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...
rodrex Posted April 14, 2023 Share Posted April 14, 2023 Hi All, would anyone have a link to the original paper? Etude complémentaire des possions de l’Eotrias de Madagascar thanks Rodney Link to comment Share on other sites More sharing options...
oilshale Posted April 14, 2023 Author Share Posted April 14, 2023 (edited) Here you go: Etude complimentaire Madagascar Lehman 1.pdf Etude complimentaire Madagascar Lehman 2.pdf Etude complimentaire Madagascar Lehman 3.pdf I also have a better copy, but it has more than 350MB. I have attached a list of publications about fishes from Madagascar. I can provide the green marked literature. Sorry, not complete and not up to date. Madagascar Lit new.docx Edited April 14, 2023 by oilshale 4 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...
doushantuo Posted April 14, 2023 Share Posted April 14, 2023 Many, many, many (times 340 million,and then squared!) Thanks. This is as rare a bit of paleo-ichthyological literature as it gets. SIMPLY HUMONGOUS If you come across Aldinger's "ganoidfische"... Link to comment Share on other sites More sharing options...
oilshale Posted April 14, 2023 Author Share Posted April 14, 2023 46 minutes ago, doushantuo said: If you come across Aldinger's "ganoidfische"... Aldinger: Permische Ganoidfische aus Ostgrönland? Sorry, I do not own that. 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...
rodrex Posted July 15, 2023 Share Posted July 15, 2023 On 4/14/2023 at 10:20 PM, oilshale said: Here you go: Etude complimentaire Madagascar Lehman 1.pdf 10.19 MB · 3 downloads Etude complimentaire Madagascar Lehman 2.pdf 9.96 MB · 4 downloads Etude complimentaire Madagascar Lehman 3.pdf 9.61 MB · 2 downloads I also have a better copy, but it has more than 350MB. I have attached a list of publications about fishes from Madagascar. I can provide the green marked literature. Sorry, not complete and not up to date. Madagascar Lit new.docx 19.08 kB · 2 downloads thank you On 4/14/2023 at 10:20 PM, oilshale said: Link to comment Share on other sites More sharing options...
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