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Showing results for tags 'Norian'.
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From the album: Triassic
Revueltosaurus was a Pseudosuchian, on the branch of the Archosaurs more closely related to the Crocodilians than the Dinosaurs. Despite the serrated teeth, it is thought to have been herbivorous.-
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From the album: Triassic
Lungfish are an ancient group of fish, with swim bladders that evolution co-opted as a kind of "lung," allowing them to breathe air. This may have proven invaluable in a seasonally dry climate in Pangea.-
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From the album: Triassic
From the "dawn" of the Dinosaurs, this small tooth represents an early theropod. Unlike the other serrated archosauriform teeth present in the formation, this tooth is ziphodont - thin and labio-lingually compresed - the archetypical tooth form that most theropods adhered to since their beginnings.-
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BVP Fieldschool to Poland (09/07/2022 - 17/07/2022)
ziggycardon posted a topic in Fossil Hunting Trips
Hi everyone! I have just returned from a fieldschool to Poland which was organized by the BVP (Belgium Society for Paleontology) in association with the Universities of Opole and Gdansk. The fieldschool started on the 9th july and ended on july 17. The first 2-3 days of the trip took place in the historic city of Gdansk which lies by the Baltic Sea where the main focus was on Baltic Amber. This included lectures, workshops, a small museum tour and some trips to the beach in search for amber. For the 2nd part of the trip we travelled to the south towards Opole and more specifically the Jurapark and digsite in Krasiejow where we had multiple lectures, workshops, and fieldwork in both Krasiejow and other quarries in the area. So in this topic I wanted to make a day by day report on this amazing trip and experience. Since we travelled by car I only returned yesterday evening so most of the finds still have to be photographed/prepped so expect them somewhere at the end of this topic (which might also take a few days to complete.) -
Taxonomy from Fossilworks.org. Genus Diagnosis by Bartram 1977, p.163: " Small macrosemiid fishes, the trunk tapering gradually to form a broad caudal peduncle; skull roof bearing genuine; gape small, the quadrate articulation lying beneath the anterior part of the orbit; dentigerous expansion of maxilla with upper and lower borders straight and diverging posteriorly, hind border also straight and perpendicular to oral border, bearing about 13 small, closely—set teeth; mandible with dentary bearing about 12 closely-set teeth, coronoid teeth rounded; leading edge of preopercular forming sharp angle; abdomina] vertebrae forming thin cylinders, notochord unconstricted; pectoral fin with about 15 rays, leading ray reduced to unpaired splint, no fringing fulcra; pelvic fin formed by five rays preceded by basa] and fringing fulcra; anal fin with seven rays, base compact; caudal fin weakly forked, axial lobe bearing five rays; dorsal fin single and long, preceded by basal and fringing fulcra, outline high anteriorly, convex posteriorly; region immediately on either side of dorsal fin devoid of scales; scales rhomboid." Species Diagnosis by Bartram 1977, p.164: "Legnonotus with about 25 dorsal fin-rays; dentary teeth tall and sharp." Line drawing from Bartram 1977, p. 164: Identified by oilshale using Bartram 1977. References: Bartram, A.W.H. (1977) The Macrosemiidae, a Mesozoic family of Holostean fishes. Bulletin of the British Museum of Natural History (Geology), 29, 137-234. Tintori, A. and Renesto, S. (1983) The Macrosemiidae (Pisces, Actinopterygii) from the Upper Triassic of Lombardy (N. Italy). Rivista Italiana di Paleontologia e Stratigrafia 89(2):209-222.
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Collected on private property owned by Larry Martin.
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- bull canyon formation
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Hi. I was wondering if anyone could help me narrow down the identification of this phytosaur tooth. Is it possible to determine the genus or species from just a tooth? I think Redondasaurus may be a potential match, but it looks like there are a few archosauriforms in the Redonda formation. Thanks for any help. Phytosaur Tooth Triassic, Norian Redonda Formation Quay County, New Mexico CH: 32 mm CBW: 11 mm CBL: 12 mm Distal: 3 serrations/mm Mesial: 3.5 serrations/mm
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The dinosaur graveyards of the Eastern Cape Province. Karoo Supergroup, South Africa
Oxytropidoceras posted a topic in Fossil News
Exploring the dinosaur graveyards of the Eastern Cape A chance discovery by a local shepherd has lead to a major scientific research program involving palaeontologists from South Africa, the UK and the US in the Karoo Basin. The area is proving to be one of the richest localities for vertebrate fossils in South Africa. by David Paul Ford, Oct 03, 2019 https://natureecoevocommunity.nature.com/users/317374-david-paul-ford/posts/54340-exploring-the-dinosaur-graveyards-of-the-eastern-cape Yours, Paul H.-
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ID requested: Triassic Bull Canyon Formation microfossil teeth (Norian Age)
ziggycardon posted a topic in Fossil ID
Hi! I recently aqcuired quite a lot of "microfossils" to kick off my Triassic collection, as I personally find it one of the most interesting time periods and while I am aware possibly not all of them are ID'd correctly I just wanted to get some nice fossils from this time period regardless of their ID's. All the fossils I acquired are from the Bull Canyon Formation, Dockum Group, San Miguel County, New Mexico, USA (Norian age) But I myself am not very knowledgeable yet in this material as I just started my collection but I am aware that some if not most of the ID's on these fossils given by the seller might be wrong as everything I read about the Bull Canyon formation says that the formation isn't that well discribed yet. I tried to make the photo's as good as I could, but it wasn't always easy given their extremely small size, so I hope the quality is good enough to work with. So I am kinda hoping is someone here on the forum would like to give it a try to see if he/she could confirm or disprove given ID's. Thank you in advance! The first set of 2 teeth were listed as the Phytosaur "Pseudopalatus" teeth which after doing a bit of research is considered a junior synonym for "Machaeroprosopus" The next collection of 3 teeth were listed as the Pseudosuchian "Revueltosaurus" The next tooth was listed as a "Theropod indet" tooth, and I know there are at least 2 species of theropod present at Bull Canyon, a Coelophysid called Gojirasaurus and a herrerasaurid called Chindesaurus. But I am not even sure whether this tooth is dinosaurian or not. The next set of teeth were listed as "Arganodus" lungfish teeth And the final tooth was listed as a "Sphenodont" (Rhynchocephalia indet.) tooth with affinities to Clevosaurus (which is found in Nova Scotia, Great Britain and China)- 8 replies
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From the album: Triassic In Situ Pictures
Triassic/Norian hardground with visible ammonoids. Genera are: Arcestes, Cladiscites, Rhacophyllites, Megaphyllites, Placites. -
From the album: Triassic In Situ Pictures
Block with small upper Norian ammonoid cross sections -
From the album: Triassic In Situ Pictures
Cross sections of Norian Arcestes sp. -
From the album: alpine triassic Ammonoids
Rhacophyllites neojurensis (QUENST) from Alaunian 2(bicrenatus Zone) Hallstatt limestone. Size 17cm.- 2 comments
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From the album: alpine triassic Ammonoids
Rhacophyllites debilis HAUER, from Triassic/Norian Hallstatt limestone of Austria. Size of Ammonoid is 13cm.-
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From the album: Nigel's album
Various misc fossils bought as a job lot which needs sorting out.-
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Calcitized phragmocone.
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References: Gorjanović-Kramberger, K. (1905): Die obertriadische Fischfauna von Hallein in Salzburg. Beitr. Paläont. Geol. Österr.-Ungarns u. d. Orients, VIII, pp 193-224, Taf. 17-21
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From the album: alpine triassic Ammonoids
Slab with Cyrtopleurites altissimus MOJS.(ribbed ammonoid) from middle Norian/Alaunian Hallstatt limestone.- 2 comments
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From the album: alpine triassic Ammonoids
Bambanagites cf. dieneri MOJS. from Norian/Alaunian II Hallstatt limestone of Austria. It was found together with Halorites macer MOJS. The shown ammonoid is the very first evidence of this genus outside of its type locality in India(Bambanag profile at Niti Pass)-
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Hello Yesterday I started my Triassic ammonoid hunting season 2012. The weather was pretty cool and windy but no rain. Snow was just gone at this location. I found a few Norian ammonoids at the beginning of my trip and some small blocks with Carnian ammonoids on my way/search back to my car. They show a small, but fine preserved, ammonoid fauna of the Tuvalian stage(uppermost Carnian/upper Triassic) regards Andreas