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Hello there! They came from Maevarano formation, Berivotra, Madagascar. Can you help me? Thank you. Is it really？

Hello there! It came from Maevarano formation, Berivotra, Madagascar. I have never seen teeth in this shape before in this place. Can you help me? Thank you. Is it Simosuchus?(It is a collection of my friend.)

Can someone help me see if it is an aptychus in the stone or something else? Many thanks. I actually have no idea how to recognize. Any tips are appreciated!

The Ammonites of Madagascar are globally renowned, with numerous well-preserved genera and species. However, I've never seen one of these specimens in an unpolished state, as most are heavily polished. Does anyone have a photo of these fossils in a more "natural" condition?

Hello, i saw this Megalosaurid tooth from the Isalo iiib form., Madagascar for sale today. Is there something wrong about it ? It seems to look like If some sort of crust has formed around it, or is it plaster, fill mass ? Let me know what you think about it, before me or someone else buys it.

Hello, can someone tell me If there is something wrong about this Eusauropod tooth from the Isalo IIIb formation ? The root seems kinda off to me. So before trying to buy it, i want to know what you think about it. Its 1.31 Inch in length, i dont know how many centimeters that is.

I'm interested in petrified wood for the scientific value (wood where the cell structure is well preserved), for the aesthetic value (mineralized with vivid colors and crystal shapes), and for oddities (like fungus, insect borings etc.) contained in the wood. Below are three petrified wood slabs, from the United States, from my collection. The below individual slab pictures were taken with the slabs dry, indoors using my camera with flash. The close-up pictures were taken with my Dino-Lite digital microscope. If you want to see a lot more of the petrified wood pieces in my collection, check out my TFF thread at the below link: Petrified Wood, conifer, fungus Polyporites wardii, early Permian late Triassic 295 to 201 MYA, Chinle Formation, northern Arizona - 3.60 lbs. 10.5x8.75x0.53 inches Traditionally this petrified wood has been identified as Araucarioxylon arizonicum, a conifer tree. However,according to Wikipedia “ The validity of the name Araucarioxylon arizonicum has been questioned. A. arizonicum may actually be composed of several different genera and species. A 2007 study on the syntypes used by Knowlton in describing the species has revealed that they belonged to three species. They were tentatively reclassified as Pullisilvaxylon arizonicum, Pullisilvaxylon daughertii, and Chinleoxylon knowltonii. The genus Araucarioxylon may thus be superfluous and illegitimate; and the petrified logs of Petrified Forest National Park may be composed of a greater diversity than initially believed.” What makes this slab unique are the oval shaped patterns framing and permeating the piece, which are actually the fossil remains of a fungus (named Polyporites wardii), that invaded the ancient tree before it was fossilized. The fungus is preserved in barite (fungus is almost never seen because it doesn't preserve in silica the way wood does). Petrified Wood, Triassic 225 MYA, Chinle Formation near Holbrook, Arizona - 745g 160 x200x12mm This slab has incredible colors (purple, red, orange, yellow etc.) which is a major reason why Arizona petrified wood is highly desired by petrified wood collectors. Petrified Wood, early Eocene 50 MYA, Green River Formation, Blue Forest along ancient Lake Gosiute, Sweetwater County, Wyoming - 1.2 lbs. 8.5x6x.38 inches This slab has really nice wood preservation with a very well defined heart in the center and stunning wood grain. There is blue agate, with golden calcite filling some of the agate voids, some nice insect borings, as well as fossil ostracods near the rind. Per Viney 2020 The Blue Forest of Ancient Lake Gosiute Sweetwater County Wyoming “The lacustrine setting in which the silicified wood formed is contrasted with two geologic environments commonly associated with silicified wood deposits, trees transported by streams and rivers buried in fine-grained fluvial sediments of deltas and floodplains as well as lahars and ash produced from volcanic eruptions that bury trees. A recent scientific study of the Blue Forest fossil wood reveals that preservation occurred as a multistage mineralization process. The taphonomic sequence that included stromatolitic growth followed by wood desiccation and then exposure to mineral-laden waters is consistent with a playa-lake model for Lake Gosiute.” Marco Sr.

Hello two days ago I bought a Majungasaurus teeth. For me it is real teeth but I have to ask you about because I'm not sure (of course I want to be sure). Can you please tell is it real teeth ? Thank you for all of your answers on this topic

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.

a friend sent me this photo to request identification if possible; the squares of the paper measure 5 mm on each side; This fossil comes from Madagascar. if you have any possible help, thank you for your contribution

Good morning! I have a question. How old is the copal from Montagne d'Ambre in Madagascar? I recently purchased two such specimens with insect and plant inclusions and I am delighted with them. The age given in scientific literature is: 1-2 million years, 100,000 years, 50,000 to 60,000 years, 1,000 years, several hundred years, even 300 years. What is the truth, or at least which of these answers is more likely?

I want to buy it but I think I should confirm its ID first. It came from Berivotra, Madagascar. Size:0.97”

Hi, this one looks a little too good for the price. It is apparently Barasaurus Besairiei Permian and from Madagascar. What do you thinnk?

I collected this piece myself from the surface during a short stroll down the hill from the roadside stop where I had earlier purchased several interesting fossils from the local kids; they were apparently very used to having tourists stop at their hut alongside the main road from Mahajanga to Antananarivo. This appears to be a nearly-toothless mandible, but it has features that just don't match the standard shape of mammalian or reptilian mandibles. Yesterday, I showed the piece to an expert paleontologist at the Natural History Museum in my hometown, Basel, Switzerland. He performed his PhD work on evolutionary history of ruminants, and he pointed out that my "mandible" lacks 1) obvious dentition; and 2) the thinning of the dorsal aspect of the mandible that is necessary for attachment of the masseter muscle. He did not know what to make of it. I've spent quite some time today comparing mandibles from a variety of ruminants, and I find nothing similar to this fossil. Can anyone here place it? Can you explain why there appears to be only one, or possible two tooth holes along the mandible? Thank you for any pointers you may have. Mike

I bought this fragment along the road from Mahajanga to Antananarivo very close to the fossil beds where it was collected (or so I was told). I did not see it in situ. I believe we were near Berivotra. I'm curious to know which species of - presumably marine reptile - this is, and its approximate placement in the Mesozoic era. I've shared photos of this specimen with a Zurich-based expert in Triassic marine reptiles, but I've not yet heard back from him. Suggestions and questions are very welcome. Mike

Greetings from Oberwil, Switzerland. I'm a new member on thefossilforum.com, but I've been collecting fossils from roadside stops and occasional dedicated outings for nearly 30 years. I'm a chemist by training - I fell in love with making new medicines, and have stuck with it. I find it mind-boggling to relate to the age of the fossils I'm holding...life is far more ancient, far more mysterious, far more marvellous than our imagination can comprehend. I've learned to respect life deeply...this planet is the only one where we know it exists, and has existed, for unimaginably long time. I'm in awe. I'll share some pictures from my collection in the coming days, in hopes of finding out more about where they fit into the grand scheme of life. My favorite fossils are Ordovician (Paleozoic), but I've come across some real stumpers from my trip to Madagascar a few years back; those fossils are almost certainly from the late Mesozoic. I'll be asking for advice on them soon. Ah...I'm now a Swiss citizen, but I was born to German (Swabian) parents who had emigrated to southeastern Tennessee in the early 1960's. Switzerland is home to me now. Best regards Mike

Hi everyone, I got a theropod tooth in Madagascar recently, but I can't clearly know what it is. Any idea about the id? Thnaks! M serration 6/mm D serration 6/mm CH 14.5mm cbl 6mm cbw 4.5mm M serrations extend to the base(I can see under the micro view but can't take a clear photo sadly) also a little fold near the m side surface of the crown. Location is: Near Kamoro river, Madagascar Isalo III fm seller is 100% sure from Jurassic period

A few years ago I bought this Ammonite in a fossil convention, but I don't know the specie. Somone can help me? Thank you.

Hello everyone, and I hope you've all had a good day. I started to put my display cabinet together today, and after an exhausting day of work, I'm only half done and I haven't even started on the bookshelf! Yay! Sarcasm aside, I've got some more fossils I would like identified, as I am creating labels for my displays. Just as before, I would prefer the most specific identification possible - species would be preferable, but I would rather a genus or clade name over an invalid species name. Location would be helpful too. Again, if any of you want them, I can take more photos tomorrow. Specimen 1: Actinopterygii This specimen I purchased at a museum, which simply labelled it as 'fish fossil'. While I do not know the location, I suspected it was from the Green River Formation in Wyoming, as many commercially available Actinopterygii fossils come from that site. At first, I thought the specimen was Knightia, as that fish seems to be one of the more common from the Green River Formation, and the only common one of the same size and rough shape. However, after recently observing a slab of Knightia at a museum, I began to doubt my initial identification, as the Knightia in the museum looked more bloated than my specimen. Is it a Knightia, or something else? Specimen 2: Ammonite I apologise for the rather shoddy attempt at editing out the supplier's logo. As you can see, I purchased this ammonite in a small plastic case at a museum, and cannot take a photograph of it from all angles. However, the back of the box (or at least what survives of it) says that the ammonite is Jurassic of age and comes from Madagascar (thinking about it, the supplier probably had to stick the ammonite to the case in order to get it through customs). Therefore, after comparing it to other ammonites from the same location, I believe it is most likely a Phylloceras specimen, as those ammonites lived in the correct place at the correct time, and had the same shaped, relatively smooth shell. Do you all agree with this conclusion? Specimen 3: Gastropod Another specimen I purchased from a museum with no knowledge of its original location or age. Unfortunately, I know very little about Gastropods, so I do not know how to identify it. Do any of you recognise at least what group it came from, or even tell its species, time period or location? Specimen 4: Ray tooth I received this tooth as a gift in a set of various teeth from Chondrichthyes. The gift set identified the ray tooth as Jurassic in age, however gave no further information on the specimen. To add to the confusion, all of the fossil ray teeth I have found available to purchase online come from Myliobatis, a genus which only evolved in the Cenozoic. While I am pretty sure it is Myliobatis and the gift set's information was simply inaccurate, I would like confirmation that this conclusion is accurate. Also, I do know that there is only half of a tooth; it broke a while ago and I no longer have the second half. Thank you for all of your help! Next up will be a couple of Triassic plant fossils, and following that will be some fossils I am concerned are fake. Hope you all have a good night!

Hi，my friend got these teeth in Madagascar. any idea about the species? thanks!