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Showing results for tags 'trigonia'.
Found 23 results
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From the album: Texas Cretaceous Fossils : Bivalves - Clams
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From the album: Texas Cretaceous Fossils : Bivalves - Clams
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From the album: Texas Cretaceous Fossils : Bivalves - Clams
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From the album: Texas Cretaceous Fossils : Bivalves - Clams
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- bivalve
- cretaceous
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From the album: Texas Cretaceous Fossils : Bivalves - Clams
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- bivalve
- cretaceous
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I finally went over to a slow-moving construction site that has been in process for weeks, if not longer. With little hope due to a lot of bigger rocks being hauled off, I walked along the elevated slopes of plowed dirt and smaller rocks that remained. To my surprise, I found some nice Fort Worth formation echinoids (holaster and macraster sp) and some small ammonites of the mortoniceras sp. I also found a very well fed nautiloid, I’m nicknaming Fat Boy Lloyd (you know, respectfully like he’s a rapper). It weighed in at 5 lb 10 ounces! I thinks it’s paracymatoceras species given the visible lines that are very close together. I also found what I think is a nicely ornate trigonia clam. Tarrant county, Texas.
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Bivalve Trigonia castrovillensis Corsicana Formation
JamieLynn posted a gallery image in Member Collections
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From the album: Texas Cretaceous Fossils : Bivalves - Clams
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- bivalve
- corsicana formation
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Not exactly sure whether this is new information, has already been observed, or if this is just me misinterpreting fossils, but I recently noticed that there are two species of the Coon Creek Formation that look very similar. That being Pterotrigonia thoracica and Trigonia eufaulensis. I noticed while observing a gallery made by @Herb that each species looks very similar, and are almost indistinguishable. Upon observing other examples of each species, I came up with this conclusion: P. thoracica typically has 14-15 ribs on its shell, while T. eufualensis has 16-17. Let me know what you all think of this! The P. trigonia is a specimen that I found in 2018, while the T. eufualensis is from @Herb's gallery.
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From the album: My collection in progress
Myophorella clavellata Parkinson, 1811 Location: Villers-sur-Mer, Normandy, France Age: 166-163 Mya (Callovian, Middle Jurassic) Measurements: 2,8x1,7 cm Kingdom: Animalia Phylum: Mollusca Subphylum: Conchifera Class: Bivalvia Subclass: Palaeoheterodonta Order: Trigoniida Family: Trigoniidae -
Hi guys, I bought this fossil in a fossil store as trigonia, seems to me More líke a crassostraea fossil or oyster fossil. I bought It at baja California, México. If More angles are needed let me know. Could anyone advice please Where can i look for fossil species of this kind to know the species? Thank You!
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From the album: Texas Cretaceous Fossils : Bivalves - Clams
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- bivalve
- cretaceous
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Trigonia reticulata Agassiz, 1840 Oxfordien Villers sur Mer Normandy
nala posted a gallery image in Member Collections
From the album: Trigonia from France
Trigonia reticulata Agassiz, 1840 Oxfordien Villers sur Mer Normandy -
I was invited last Saturday to take part in a meeting of amateur and professional paleontologists in the Rhine valley. We met at a place called the Kahlenberg in Ringsheim. This used to be an iron ore mine before it was turned into a garbage dump in the 70's and was transformed a couple of decades later into a modern recycling center, developing methods of recycling which have been copied all over the world. The entire site, about 100 acres, has been renaturalized and is cultivated in such a way that it has become a breeding place and habitat for many rare flora and fauna. It is also a well-known site for geological and paleontological research where a small section of the area is set aside for this purpose. We were shown a couple of films about the recycling methods and the flora and fauna and then we were treated to an extremely informative lecture about the geology and fossil fauna of the Aalenian and Bajocian layers which are exposed here. The site is generally off limits to collectors, but our group was allowed to do a couple of hours of digging after lunch. I was lucky enough to find this perfectly preserved and complete 6cm. long Trigonia costata bivalve from the Bajocian humphresianum zone.
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From the album: German Gastropods and Bivalves
6x4.5cm. Found at the Kahlenberg in Ringsheim in the upper Rhine valley. Humphresianum zone, Bajocian, middle Jurassic. -
I'm showing 2 speciments here. The first 5 photos show different perspectives of a complete sample and the last shows the insides of the shells.
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Both valves intact
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Hi I recently obtained this specimen at a street market in Peru. Its triangular 3cm x 2cm x1cm. Looks Trigonia-like. Any ideas on id and age? Regards Dennis
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From the album: Vaches Noires - april and march 2016
Trigonia elongata : a bivalve from callovian clay of "les Vaches Noires" - Normandy - France -
From the album: Vaches Noires - april and march 2016
Trigonia elongata : a bivalve from callovian clay of "les Vaches Noires" - Normandy - France -
From the album: Vaches Noires - Feb 2016
Trigonia sp: a bivalve from the jurassic clay of Les Vaches Noires -
From the album: Vaches Noires - Feb 2016
Trigonia elongata : a bivalve from the callovian clay of Les Vaches Noires -
From the album: Vaches Noires - Feb 2016
Trigonia elongata : a bivalve from the callovian clay of Les Vaches Noires -
From the album: Vaches Noires - Feb 2016
Trigonia elongata : a bivalve from the callovian clay of Les Vaches Noires
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