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Showing results for tags 'carnian'.
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A speciment recently found in Argolis region of Greece . Upper Anisian - Carnian acording to the scripts but most probably Carnian (lowermost Upper Triassic)
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This is a Carnian aged natural association of Traumatocrinus crinoids, and either Trachyceras, or Neoprotrachyceras Ammonoids from Guanling Guizhou province China.
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Found recently this specimen in the wider Epidaurus region Greece . The matrix rock as well the as the ammonite is green silicified limestone with jasper pigments or enlosures in some parts . Considered geologically Upper Anisian - Carnian . Morphologically is close to Nevadites but not for sure as I am no expert in identification . Any help to ID welcome
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Over 230 million years ago massive Canadian volcanism caused greenhouse warming and a mass extinction that led to increased dinosaur numbers later. This is the Carnian Mass Extinction event https://phys.org/news/2020-09-discovery-mass-extinction.html
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- mass extinction event
- volcanic activity
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A very well preserved herrerasaurid dinosaur, Gnathovorax cabreirai is described in the attached paper. For us collectors it gives us clues around Carnian age teeth. Unfortunately most of the teeth available to collectors are Norian or earlier in age. https://peerj.com/articles/7963/ Unfortunately the paper does not do a great job describing the teeth, here is what we have: "All tooth crowns are blade like, caudally curved and labiolingually compressed. The premaxillay and dentary teeth lack serrations in their mesial margins. However, in the distal margin there are small serrations that form a right angle with the main axis of the tooth. In the maxillary teeth the serration occur in both margins."
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From the album: Triassic In Situ Pictures
Strong condensed Tuvalian layer with Tropites sp., Jovites sp., Juvavites sp., -
From the album: Triassic In Situ Pictures
Two Joannites sp. in lower Carnian limestone. -
just washed upper Carnian-Tuvalian 3, ammonoids.JPG
andreas posted a gallery image in Member Collections
From the album: Triassic In Situ Pictures
Some small Tuvalian ammonoids from bottom to top: Megaphyllites sp., Arcestes sp., Tardeceras sp., Tropites sp. -
Hoplotropites and Polycyclus Triassic-Tuvalian 3.JPG
andreas posted a gallery image in Member Collections
From the album: Triassic In Situ Pictures
Venter of a Hoplotropites sp. and a above visible Polycyclus sp. in Tuvalian Hallstatt limestone. -
From the album: Invertebrates
Traumatocrinus caudex Dittmar, 1866 Late Triassic Carnian Xiaowa Formation Guanling Guizhou PRC-
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From the album: alpine triassic Ammonoids
Upper Carnian/Tuvalian ammonoid fauna from the historical location/ditch on Vordersandling. The shown ammonoids come from a small lense that was found by me several years ago. No coarser ribbed Projuvavites was found only Juvavites bacchus MOJS. Therefore I range this fauna to the dilleri Zone. Tropites aff. subbullatus, Paratropites sp., Discotropites sp., Megaphyllites sp., Sandlingites cf. oribasus and Arcestes sp. -
From the album: alpine triassic Ammonoids
Monophyllites simonyi (HAUER) from the Hallstatt limestone of Austria. Size is 8 cm. Found in the upper part of the austriacum zone. -
From the album: alpine triassic Ammonoids
Trachyceras cf. hekubae MOJS. from Triassic/Carnian/Austriacum Zone, Hallstatt limestone of Austria. Diameter is about 9cm. Below is a fragment of Neoprotrachyceras thous (DITTMAR). This ammonoid and the orange colour of the rock indicates the austriacum zone. -
From the album: alpine triassic Ammonoids
Sirenites sp. from the Triassic/Carnian, upper aonoides zone. Hallstatt limestone of Austria. Size is about 6cm. Good to see on this specimen is the characteristic feature of Sirenites s. s. that each single rib ends in two venter nodes. -
From the album: alpine triassic Ammonoids
Hypocladiscites subtornatus (MOJS), 10cm diameter, together with Mojsvarites agenor(left side), Joannites sp. and orthocone Atractites sp. Triassic/lower Carnian aonoides zone. Hallstatt limestone of Austria. -
From the album: alpine triassic Ammonoids
Upper Triassic/Carnian/ Austriacum Zone, Mojsvaroceras cf. perarmatus or Pleuronautilus sp. with Monophyllites simonyi and non det. bone.- 2 comments
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From the album: alpine triassic Ammonoids
Block with Syringoceras sp., Monophyllites simonyi, Arcestes sp., Megaphyllites sp. and several orthocone Nautiloids -
Tropites torquillus MOJS.(the Big one)div.Tropites sp., Trachysagenites Sp.
andreas posted a gallery image in Member Collections
From the album: alpine triassic Ammonoids
Slab with Tropites torquillus MOJS.(the big one), Tropites fusobullatus MOJS.(the lower one) and 2x Tropites ssp.(left end and right top) The middle ammonoid on the right end is a Trachysagenites sp. The small smooth ones are Arcestes sp. The orthocone Nautiloid points to the direction of the palaeocurrent. Prepared from the downside. Big parts of the upper side of this ammonoids are disolved due to the strong condensation in this limestone. Stratigraphic range and occurence: Upper Triassic/ Carnian/Tuvalian, subbullatus zone. Hallstatt limestone of Austria. -
Typical Cephalopod Faunal Spectrum Of The Carnian Aonoideszone
andreas posted a gallery image in Member Collections
From the album: alpine triassic Ammonoids
Diplosirenites raineri MOJS.=big one in the middle, 3x Trachyceras sp., Mojsvarites agenor(MUENSTER),=smooth evolute one on right edge, Pompeckjites layeri(HAUER), Megaphyllites jarbas(MUENSTER), div. Sirenites sp., Dictyoconites sp., Atractites sp., Arcestes periolcus MOJS.,.. A species of Eupinacoceras sp., most probably the ancestor of the following Tuvalian Eupinacoceras rex MOJS. is on this block too. The slab is prepped from the underside. On the backside the marly horizon of the Carnian Pluvial Event is shown. -
From the album: alpine triassic Ammonoids
Triassic, Lower Carnian(Aonoides-Zone) slab with Monophyllites simonyi(HAUER)= the big one in the middle, Dittmarites sp., Trachyceras sp.,Joannites sp., Pompeckjites layeri -
From the album: alpine triassic Ammonoids
Clydonites cf. vesta MOJS. Lower Carnian/Julian/ Upper Aonoides zone. From Hallstatt limestone of Austria. -
From the album: alpine triassic Ammonoids
Sageceras haidingeri (HAUER) from Carnian/Julian Hallstatt limestone in Austria.