Isalo III
Description
Source: Wikipédia
The Isalo III Formation is a geological formation in Madagascar, off the eastern coast of Africa. It dates back to the Middle Jurassic. The use of the term "Isalo III" is somewhat controversial as the two prior units Isalo I and II are Triassic cross-bedded sandstone units that form a continuous depositional sequence, while the "Isalo III" sandstones are not part of the same depositional sequence, and were deposited considerably later. and are perhaps better treated as part of several separate formations. It is traditionally divided into two subunits the lower, Bajocian aged Isalo IIIa unit also known as the Beronono Formation and the upper, Bathonian aged Isalo IIIb unit also known as the Sakaraha Formation or Sakahara Formation. The Sakaraha Formation consists of sandstones, marls and carbonates and represents a coastal plain environment, and is laterally equivalent to the predominantly carbonate Bemaraha Formation, which represents a coastal barrier lagoon complex. The formation is found in the northwest and in the southeast of the country and has provided a variety of fossils.
Découvertes
Source: The Paleobiology Database
Site(s) correspondant(s) à cette formation: 13
Port-Bergé : Mahajanga - ? 13648 13816 38078 near Port-Bergé- Eusauropoda identifié comme Bothriospondylus madagascariensis
- Marojano : Fianarantsoa - ? 13648 13816 38078 at Marojano, L bank of Doroa
- Eusauropoda identifié comme Bothriospondylus madagascariensis
- Ankinganivalaka : Mahajanga - ? 13648 13816 38078 52223 68058 73748 at Ankinganivalaka, "at the edge of the Maivarano" (Maevarano?); S. of Ambodimadiro. Also listed as Ankingavola, on the left bank of the Maivorano.
Ankinganivalaka municipality (previously known as Ankingavola), on the right bank of a meander of the Loza River
- Ankinganivalaka, Antsaongo : Mahajanga - ? 13648 38078 52223 at Ankinganivalaka, "at the edge of the Maivarano" (Maevarano?), Antsaongo/Antsaonjo, near Antsohihi/Antsohihy; W. of Antsohihy, on the edges of the Loza
- Eusauropoda identifié comme Bothriospondylus madagascariensis
- Antsohihi : Mahajanga - ? 13648 13816 38078 near Antsohihi/Antsohihy
- Eusauropoda identifié comme Bothriospondylus madagascariensis
- Antsohihy : Mahajanga - ? 13648 13816 14153 38078 52153 54207 63571 67930 probably from area of Antsohihi/Antsohihy, 20 miles E of Narinda Bay (= Narrinda, Narindra)
- Eusauropoda identifié comme Bothriospondylus madagascariensis n. sp.
- Andranomamy, Tsinjorano : Mahajanga - ? 13816 13843 47192 55255 60341 68574 76918 4 km N of km 426 (RN 4) on a small road to Tsinjorano, which departs RN 4 about 500 m N of Andranomamy. Site occupies a series of small hills (tanety) of 10-20 m height
- Tsinjorano : Mahajanga - ? 13843 34781 34810 near Tsinjorano, 5 km from km 435 on route from Majunga to Antananarivo (= RN 4). Site is 2.8 km from crossroad 435 and 200 m N of this point on the road.
- Tsinjorano-East : Mahajanga - ? 13843 near Tsinjorano, 2.8 km from km 435 on route from Majunga to Antananarivo (= RN 4), and 200 m N of this point. Locality is 100 m E of original Tsinjorano site.
- Mevarana, Loza Gulf : Mahajanga - ? 19184 38078 54207 near Mevarana (= Maevarano), at end of the Gulf of Loza/Luza, opening into Narinda Bay (Narindra); about 250 km N of the Maevarano site in the environs of Mahajunga
- Eusauropoda identifié comme Bothriospondylus madagascariensis
- south of Antsohihi : Mahajanga - ? 19184 54207 8-10 km S of Antsohihi/Antsohihy
- Lake Ankitsanibé : Mahajanga - ? 19184 38078 54207 from edges of Lake Ankitsanibé (= Antrisanibé), 5 km S of Antsohihi (Antsohihy)
- Eusauropoda identifié comme ? Bothriospondylus madagascariensis
- Manary-Abo, Tsinjorano : Mahajanga - ? 27287 34781 34810 47192 55255 67930 At foot of small butte, along a cattle piste, at Manary-Abo (= Manariabo), SW of Mahajunga Basin, near Tsinjorano. A few hundred meters W of the charcoaler piste joining Andranomamy and the Tsinjorano-Bevezaka piste, and in the vicinity of the wooded region called Analambiby-Be.
- Eusauropoda identifié comme ? Bothriospondylus madagascariensis
Publication(s)
La base comprend 21 publication(s).
Source: The Paleobiology Database
- ↑1 2 3 4 5 6 7 8 9 A. Thevenin. 1907. Paléontologie de Madagascar. IV. — Dinosauriens [Paleontology of Madagascar. IV. — Dinosaurs]. Annales de Paléontologie 2:121-136
- ↑1 2 3 4 5 6 J. F. Bonaparte. 1986. The early radiation and phylogenetic relationships of the Jurassic sauropod dinosaurs, based on vertebral anatomy. The Beginning of the Age of Dinosaurs: Faunal Change Across the Triassic–Jurassic Boundary. Cambridge University Press, Cambridge
- ↑1 2 3 4 5 6 7 8 P. D. Mannion. 2010. A revision of the sauropod dinosaur genus 'Bothriospondylus' with a redescription of the type material of the Middle Jurassic form 'B. madagascariensis. Palaeontology 53(2):277-296 (https://doi.org/10.1111/j.1475-4983.2009.00919.x)
- ↑1 2 3 4 C. Colcanap. 1905. Extrait d'une Notice géologique et paléontologique sur le cercle d'Analalava [Excerpt from a geological and paleontological notice on the circle of Analalava]. Bulletin du Museum d'Histoire Naturelle, Paris 11(5):355-362
- ↑1 P. Lemoine. 1906. Études Géologiques dans le Nord de Madagascar. Contributions à l’Histoire Géologique de l’Océan Indien [Geological Notes in the North of Madagascar. Contributions to the Geological History of the Indian Ocean]
- ↑1 R. Royo-Torres, A. Cobos, and P. Mocho, L. Alcalá. 2021. Origin and evolution of turiasaur dinosaurs set by means of a new ‘rosetta’ specimen from Spain. Zoological Journal of the Linnean Society 191(1):201-227 (https://doi.org/10.1093/zoolinnean/zlaa091)
- ↑1 2 H. Woodward and R. Baron. 1894. Recent discovery of fossil bones of huge deinosaurs in Madagascar. The Antananarivo Annual and Madagascar Magazine 5, part 2(18):244
- ↑1 R. Lydekker. 1895. On bones of a sauropodous dinosaur from Madagascar. Quarterly Journal of the Geological Society of London 51:329-336 (https://doi.org/10.1144/gsl.jgs.1895.051.01-04.25)
- ↑1 2 3 4 M. Boule. 1902. Géologie [Geology]. Madagascar au Début du XXe Siècle
- ↑1 P. Taquet. 1984. I dinosauri d’Africa [The dinosaurs of Africa]. Sulle Orme dei Dinosauri
- ↑1 2 R. Lavocat. 1957. Sur les couches à dinosauriens de Madagascar [On the dinosaur beds of Madagascar]. Commission de Coopération Technique en Afrique au Sud du Sahara, Comités régionaux Centre, Est et Sud 2:363-364
- ↑1 2 3 4 5 6 M. Collignon. 1954. Decouverte de dinosauriens a Tsinjorano, district d'Ambato-Boeni [Discovery of dinosaurs at Tsinjorano, Ambato-Boeni district]. Bulletin de l'Académie Malgache 31:59-61
- ↑1 2 A. Ogier. 1975. Etude de Nouveaux Ossements de Bothriospondylus (Sauropode) d'un Gisement du Bathonien de Madagascar [Study of New Bones of Bothriospondylus (Sauropod) from a Locality from the Bathonian of Madagascar]. Sciences Naturelles, Université de Paris VI
- ↑1 2 A. de Ricqlès. 1968. Quelques observations paléohistologiques sur le dinosaurien sauropode Bothriospondylus [Some paleohistological observations on the sauropod dinosaur Bothriospondylus]. Annales de l'Université de Madagascar 6:157-209
- ↑1 P. J. Currie and K. Padian. 1997. Institute de Paléontologie, Muséum National d'Histoire Naturelle, Paris. Encyclopedia of Dinosaurs
- ↑1 P. Taquet. 1977. Les découvertes récentes de Dinosaures du Jurassique et du Crétacé en Afrique, au Proche et Moyen-Orient et en Inde [Recent discoveries of dinosaurs from the Jurassic and Cretaceous in Africa, the Near and Middle East, and India]. Mémoire Hors Serie—Société Géologique de France 8:325-330
- ↑1 M. L. T. Raveloson, N. D. L. Clark, and A. H. Rasoamiaramana. 2019. New information on the Madagascan Middle Jurassic sauropod Lapparentosaurus madagascariensis. Geosciences 9(12):498:1-11 (https://doi.org/10.3390/geosciences9120498)
- ↑1 2 3 R. Lavocat. 1955. Les recherches de reptiles fossiles à Madagascar [Researches on fossil reptiles in Madagascar]. Le Naturaliste Malgache 7(2):203-207
- ↑1 2 R. Lavocat. 1955. Étude des gisements de dinosauriens de la region de Majunga (Madagascar) [Study of the dinosaur localities of the Majunga region (Madagascar)]. Haut Commissariat de Madagascar et Dependances, Direction des Mines et de la Géologie. Travaux du Bureau Geologique 69:1-19
- ↑1 2 3 4 5 6 M. Boule. 1896. Note préliminaire sur les débris de dinosauriens envoyés au Muséum par M. Bastard [Preliminary note on the dinosaurian remains brought to the Muséum by Mr. Bastard]. Bulletin du Muséum National d'Histoire Naturelle, Paris 2:347-351
- ↑1 E. Läng and F. Goussard. 2007. Redescription of the wrist and manus of ?Bothriospondylus madagascariensis: new data on carpus morphology in Sauropoda. Geodiversitas 29(4):549-560
Galerie d'image
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