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Barasaurus fossil real?
Mantelliceras posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hello everyone, I have recently acquired this Barasaurus fossil from Madagascar and I was wondering if it really is 100% natural as the seller has stated many times to me. I have read a couple of threads in this forum regarding Barasaurus fakes but still have many doubts. If possible, I would greatly appreciate any input from this forum’s experts regarding this piece. Do you think it's real? Please find attached some photos and thanks a lot for your help:- 7 replies
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Mystery Madagascar teeth ID help Croc? Pterosaur? Yes I have good proximity
jikohr posted a topic in Fossil ID
Hi everyone! I just got in some interesting teeth from the Jurassic of Madagascar Isalo lll Formation (yes I have good proximity. The were found on the outskirts of Boriziny by surface collecting, I included a map) and some of the teeth I'm not sure what they are. My best guess is either Croc or Pterosaur, leaning (hoping) Pterosaur since there is no carina and most have a flattened oval base like the Pterosaur teeth I usually see out of Morocco but then there's one with a circular base that I'm not entirely sure. I saw somewhere that Rhamphorhynchidae can be found within the Isalo, could these be from one of them? first tooth has CH of 16.5 mm, CBL of 7.11 mm, and CBW of 7.98 mm second tooth has a CH of 19.98 mm, CBL of 5.26 mm, and CBW of 6.3 mm Any insight is appreciated as always!- 18 replies
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Hey all, Curious to see if you have similar thoughts about this tooth. In terms of that possibility that it's not, in fact, from the Jurassic, I'm not sure I'm seeing the kind of denticle shape/hooking and marginal undulations of Majungasaurus. From Isalo IIIb in the Mahajanga basin of Madagascar CH: About 27.6mm CBL (carina-to-carina): 13.9mm CBW (mesial side to distal side): 7.5mm Mesial Serration Density: 2.2mmm Distal Serration Density: 1.9/mm Thank you!
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Hi all, Curious to know what family you think this tooth likely came from. Could it be Allosaurid? From Isalo IIIb in the Mahajanga basin of Madagascar CH: About 27.5mm (estimating for tip) CBL (carina-to-carina): 14mm CBW (mesial side to distal side): 8.5mm Mesial Serration Density: 1.9mmm Distal Serration Density: 2.1/mm Thank you!!
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Madagascar Ammonites - 100% Natural or Repaired
Mulatto_Zack posted a topic in Is It Real? How to Recognize Fossil Fabrications
Looking to purchase this pair of ammonites from Madagascar but was wondering if they’re really 100% natural or potentially repaired from pieces of different ammonites. I can’t really tell but the back looked questionable! -
Likely/possible specimens of Tyrannosauroidea from the Southern Hemisphere (Jurassic-Early Late Cretaceous)
Joseph Fossil posted a topic in General Fossil Discussion
As a freshmen in College, I did a little extra credit report for my geology class about a controversial topic - Tyrannosauroidea diversity in the Southern Hemisphere during the Jurassic-Early Late Cretaceous periods. I was quite surprised at the amount of specimens I found. This diversity likely was the result of an early spread of the early tyrannosaur group Pantyrannosauria into Africa, Eurasia, and North America during the Jurassic and diversified once the land connecting these continents spread out more. Most of these species lived during the Early Cretaceous, though one or two exceptions might have lasted into the Early Late Cretaceous. I've created a list of known of the species and specimens which I would like to share on the forum (let me if there are any examples I'm missing or should add): South America Santanaraptor (Romualdo Member of the Santana Formation) (Early Albian, Cretaceous period 112.6-109.0 million years ago) Specimen: MN 4802-V (partial skeleton) http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&collection_no=67712 Tyrannosauroidea indet. (Rio do Peixe Group of the Sousa Formation) (Berriasian to the Berriasian, Cretaceous period 145.5-130.0 million years ago) Specimen: NA http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&collection_no=58791 https://www.researchgate.net/publication/309717524_As_localidades_com_rastros_fosseis_de_Tetrapodes_na_America_Latina Tyrannosauroidea indet. (Serra da Galga Member of Marília Formation) (Late Maastrichtian, Cretaceous Period, 70.0-66.0 million years ago) Specimen: CPP 449 (partial tooth) https://www.researchgate.net/publication/270524259_Theropod_teeth_from_the_Marilia_Formation_late_Maastrichtian_at_the_paleontological_site_of_Peiropolis_in_Minas_Gerais_State_Brazil (above paper initially described specimen, identification as possible Tyrannosauroidea in science direct paper) https://www.sciencedirect.com/science/article/abs/pii/S0031018220303151 Africa (Madagascar) Tyrannosauroidea indet. (Isalo Illb Formation) (Bathonian, Jurassic period 167.7-164.7 million years ago) Specimen: MSNM V5819 (partial tooth) http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&collection_no=55391 https://www.researchgate.net/publication/257651210_First_description_of_theropod_remains_from_the_Middle_Jurassic_Bathonian_of_Madagascar Australia Timimus hermani (Otway Group of Eumeralla Formation) (Late Aptian, Cretaceous period 122.5-109.0 million years ago) Specimens: NMV P186303 (limb: left femur), NMV P186323 (limb: left femur of juvenile individual), QM F34621 (Pedal phalanx III-1) http://www.paleofile.com/Dinosaurs/Theropods/Timimus.asp http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=57099 Tyrannosauroidea indet. (Otway Group of Eumeralla Formation) (Late Aptian, Cretaceous period 110.0 million years ago) Specimen: NMV P186069 (Pubis bone) Possible Specimen: ?NMV P186046 (Pubis bone) https://www.researchgate.net/publication/42589187_A_Southern_Tyrant_Reptile https://www.sciencedaily.com/releases/2010/03/100325143045.htm- 7 replies
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A while back, I was researching the number of likely Tyrannosauroidea dinosaurs that inhabited the Southern Hemisphere (I know this is a very controversial subject) in the Early Cretaceous for an extra credit research paper I was doing for my freshmen year college geology class. As I was looking for data for the paper, I found an unusual data entry on the paleontological database website fossilworks.org - It lists Tyrannosauridae remains from Jurassic Madagascar. http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&collection_no=55391 The specimen MSNM V5819 (consisting of a partial tooth) was apparently found in Mahajanga, Madagascar at the Bathonian aged Isalo Illb Formation (dating 167.7-164.7 million years ago) in 2003. S. Maganuco, A. Cau, and G. Pasini (2005) First description of theropod remains from the Middle Jurassic (Bathonian) of Madagascar. Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano, 146(2):165-202 https://www.researchgate.net/publication/257651210_First_description_of_theropod_remains_from_the_Middle_Jurassic_Bathonian_of_Madagascar (You can read the actual paper with this above link). Here is also two photographs from the paper of the specimen MSNM V5819 The authors of the paper (which I must say did a really good job with the research and paper itself) state that a healthy degree of caution must be given in assigning MSNM V5819 to Tyrannosauroidea. Still, if this is indeed correct, It would be one of the earliest members of Tyrannosauroidea, with the only currently known older Tyrannosauroidea taxon being Proceratosaurus of England. The Specimen MSNM V5819 is maybe even older than Kileskus of Russia, Guanlong of China, and Aviatyrannus of Portugal. Still, the only currently known specimen is a single tooth, MSNM V5819, and I'm not 100% certain this represents a member of Tyrannosauroidea? What do you guys think?
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Hey all, This is supposed to be from Isalo IIIb in Madagascar. Does it look ceratosaur to you? Could it be Majungasaurus with faulty location? I suspect not because of the character on the denticles of Majungasaurus teeth.
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Hello everyone, I need your help to identify an ammonite. Today I bought one but I bought it in a place where they only sell minerals so when I asked where it was from or more information about the fossil they told me they didn't know. I am not a great expert but I understand that most ammonite fossils are from Madagascar, although I am not saying that this one is from there. My questions are the following: Is there any way to know the age and species of the ammonite? Before making the publication I was looking for a little information and I saw that it is very similar to Phylloceras due to the markings on the shell, which I have seen on sales sites such as ammonite from madagascar, that is why I suspect it, but I am an amateur so I don't know. any. Thank you all
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hey , I purchased this leg bone in Tucson. The dealer told me that is a sauropod dinosaur leg bone from the Cretaceous strata of Madagascar. The key point is that the leg bone is attached with skin. I found that these black "skin" has wrinkles similar to real skin. Is this black "skin" real dinosaur skin? I searched some materials. Professor Kristi Curry Rogers found that Rapetosaurus had skin ossification. I would like to hear more comments, thank you!
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Hey Guys, My friend has these 5 Madagascar dinosaur teeth from an old collection that he wants to ID. They’re all from the Jurassic Isalo III formation. Thanks for all the help!!! Here are some pictures and sizes: Left tooth 14mm Middle 15mm Right 16mm
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I have aquired a slab of rock that has a Barasaurus in it. Not sure if thats the correct name or not. Ive taken a close up of what is exposed, circled in white. Im afraid this is the head? Would so much have wanted the head end in the rock instead of the tail end. What do you guys think? Thanks
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From the album: My collection in progress
Cleoniceras sp. Parona & Bonnarelli 1895 Location: Atsimo-Andrefana, Madagascar Age: 157 - 155 Mya (Oxfordian, Upper Jurassic) Measurements: 4,5 cm (diameter) Kingdom: Animalia Phylum: Mollusca Subphylum: Conchifera Class: Cephalopoda Subclass: Ammonoidea Order: Ammonitida Suborder: Ammonitina Family: Hoplitidae The ammonite is iridescent. In some parts is visible the elaborate ammonitic suture pattern. -
Below are some of the slabs/slices/limb casts of petrified wood from my collection. I'll post more pieces in latter replies. I especially like very colorful pieces and unusual pieces like Teredo bored pieces or pieces with fungus. I have hundreds of close-up pictures. If you would like to see close-up pictures of a particular piece, reply to this post with the number/numbers. If you want to see close-up pictures of some of the petrified wood pieces from this thread, check out my TFF thread at the below link: 1 Petrified Wood botryoidal agate golden calcite insect borings ostracods Eocene 50 MYA Green River Fm Blue Forest along Lake Gosiute Sweetwater County Wyoming 1.2 lbs 8.25 x6x.38 inches 2 Petrified Wood conifer Araucarioxylon arizonicum fungus Polyporites wardii early Permian late Triassic 295 to 201 MYA Chinle Fm northern Arizona 3.60 lbs 10.25x8.75x.5 inches 3 Petrified Wood Triassic 225 MYA Chinle Formation near Holbrook Arizona 745g 160 x200x12mm 4 Petrified Wood Seed Fern Rhexoxylon Triassic 220 MYA Ambilobe Madagascar 136g 3.75x2.50x.375 to .5 inches 5 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Acondromen Madagascar 575g 145mmx95mmx18mm 6 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Acondromen Madagascar 182g 4.25x3.5x.31 inches 7 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Acondromen Madagascar 201g 4.25x3.5x.375 inches 8 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Acondromen Madagascar155g 4.25x3x.375 inches 9 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Acondromen Madagascar157g 4.25x3.25x.375 inches 10 Teredo Bored Petrified Wood Slab Paleocene Epoch Canon Ball Formation North Dakota 2,150g 10.25x9x.625 inches 11 Petrified tree fern Tietea singularis Permian 275MYA Motuca Formation Parnaíba Basin in Filadélfia Tocantins Brazil 340 g 8 x 4.75 x.25 inches 12 Petrified Wood encased In Algae-Laurel Eocene Bridger Formation Blue Forest WY 1802g 9.5x7.75x.625 to .75 inches 13 Petrified Replacement Wood Eocene 34 to 40 MYA Clarno Formation Hampton Butte central Oregon 484g 7 x 5 x .44 inches 14 Petrified Wood Slab Woodworthia Triassic Chinle Formation Winslow AZ 408 g 5.5x4.25x.43 to.5 inches 15 Agate Petrified Wood Turkey 253g 6.25 X 3.25 X .31 inches 16 Petrified Wood Slab Cedar Miocene 15.5 MYA Wanapum Basalt Formation Saddle Mountain Washington 228g 5.5x4.25x.25 inches 17 Petrified Wood Slab Miocene 15.5 MYA Wanapum Basalt Formation Saddle Mountain Washington 361g 5.75x5x.44 inches 18 Petrified Shrinkwood Miocene Fleming Formation Live Oak County, Texas 176g 4.25x3.5x.375 inches 19 Yew Taxus sp. in Stromatolitic Algae Miocene Tonopah Nevada 3.25 x 2.5x.19 inches 20 Teredo Bored Petrified Driftwood Middle Miocene Saltos Shale Member Monterey Formation Santa Barbara Canyon near Cuyama CA 6 x 4x.625 inches 21 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Madagascar 572g 5.75x4x.7 inches 22 Hematite Replaced Teredo Bored Petrified Wood Eocene Yegua Formation or Cretaceous 40 to 50 MYA Lake Bryan TX 288g 7.25 x3x.44 inches 23 Petrified Wood Log Miocene Jarbridge Ryolite Formation Hubbard Basin Elko County Nevada 1061g 4.25x4x1.75 to 2.75 inches 24 Petrified Wood Triassic 225 MYA Chinle Formation Arizona 1186g 8.25x6.75x.625 inches 25 Petrified Wood Sycamore Platanus sp. Miocene Bopesta Formation Horse Canyon near Tehachapi Kern County California 271g 4x3.5x.75 inches Marco Sr.
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From the album: Skeleton models
Holocene of Madagascar Handmade postcranium, digitally sculpted skull by me.© Jan Frost
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From the album: Cretaceous of Madagascar
Small iridescent ammonite from Madirovalo, Madagascar. Lower Cretaceous - Albian.-
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Hello! I got this ammonite fossil from Madirovalo, Madagascar. Cretaceous. That's all the info I got. Does anyone know possibly what species it is or if it's Lower Cretaceous or Upper Cretaceous? Regards.
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Curious if this "elephant bird egg" is real. The length and width are realistic and it weights about 3 lbs. 14.5 oz. It is smoother than I expected and appears to have been polished in places, especially in spots where some of the sections meet. Surface covered in fine lines (often with branches) as well as small holes. A small flake was examined under a microscope, showing one of the fine lines to consist of a series of holes. Other holes were also visible. I dabbed the flake with vinegar and observed bubbling under the scope. Images show some close-ups of the textured surface as well as a picture I took through the eyepiece of the microscope (underside of the flake is shown, with a series of pits following a fine line visible). Looking forward to hearing what you all think. Thanks.
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From Madagascar Probably Mesozoic Why is this fossil lying on its back .looks like a parrot's beak. ---------------------------------- These are some of the details that prove it's a fossil It's a very damaged fossil It preserved conical foramina, and preserved neural crest vertebrae fossils are rare in Madagascar So what kind of animal is this? Detail the rupture above the neural crest is seen to form a square inconsistency The fractures on the spine have detailed bone patterns Thank you for your answer. --------------------------------- Thank you for your insights. I've seen many kinds of vertebrae from Madagascar, but this one is very special, very strange. But I also want to ask: why is it in this form? Like a lie? As I've drawn it: the red is a separate spine, the yellow is another spine; The blue one is the nerve, why is it so combined,? what range of animals is it?
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Taxonomy from Garassino & Teruzzi 1995. Diagnosis from Garassino & Teruzzi 1995, p. 92: "Subrectangular carapace; long rostrum, lacking both suprarostral and subrostral teeth; marked dorsal hump at the base of the rostrum; spine in the posterior third of the dorsal midline of the carapace; deep hepatic groove and weak branchiocardiac groove; gastro-orbital, hepatic and branchiocardiac spines present; pereiopods I-III chelate; strongly elongate pereiopod III; tergite VI rectangular; triangular telson with a pointed distal extremity." Line drawing from Garassino & Teruzzi 1995, p. 94: References: Van Straelen V. (1933) Antrimpos madagascariensis Crustace decapode du Permotrias de Madagascar. Bull. Mus. Roy. hist. Nat. Belgique, Bruxelles, IX(1). Garassino A. & Teruzzi G., (1995) Studies on Permo-Trias of Madagascar, 3. The decapod crustaceans of the Ambilobe region (NW Madagascar). Atti. Soc. it. Sci. nat. Museo civ. Stor. nat. Milano, Milano, 134 (1): 85-113.
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Please help me identify the genus of this ammonite, it's from cretaceous/Madagascar, .Thank you very much!
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Hello, Is this fish fossil real? Listed as Pteronisculus from Madagascar, length 12cm. Any apparent reconstruction or fabrication? And how complete is it? Looks like the tip of the head may be cut off. Thanks.
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