blackmoth Posted April 3, 2020 Share Posted April 3, 2020 the incomplete ventral valve is rather large, about 5cm wide and 8 cm longe, convext, sulcus deep and thin for productus type. It has a kind of triangle shape, with the beak broken and bent down. The beak itself actually look like a normal shaped productus, with costae and concentric lines at right angles forming a grid like network. The concentric lines are missing in other part of the shell, though the tubercles seem to be scatterd every where. I have never seem any thibk like this. Could it just be a drastically deformed productus of some kind, or some individual that got some abnormal growth in its life? Link to comment Share on other sites More sharing options...
Coco Posted April 3, 2020 Share Posted April 3, 2020 Hi, What do you mean by "Productus"? I don’t know what it is. Naming a fossil without its genus is useless. Do you know how many genera have as species "productus" ? We never mention a fossil by its latin species name alone Coco 1 ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Pareidolia : here Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
Wrangellian Posted April 3, 2020 Share Posted April 3, 2020 Isn't 'Productus' a brachiopod genus name? (Like Linoproductus) Link to comment Share on other sites More sharing options...
t-tree Posted April 3, 2020 Share Posted April 3, 2020 Linoproductus is the genus of the brachiopod . John Be happy while you're living for you're a long time dead. Link to comment Share on other sites More sharing options...
westcoast Posted April 3, 2020 Share Posted April 3, 2020 I don't see anything particularly unusual about this brachiopod... Link to comment Share on other sites More sharing options...
Coco Posted April 3, 2020 Share Posted April 3, 2020 4 hours ago, Wrangellian said: Isn't 'Productus' a brachiopod genus name? (Like Linoproductus) In this case, it must be written "Productus". Coco 4 hours ago, blackmoth said: ...sulcus deep and thin for productus type. Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Pareidolia : here Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
FossilNerd Posted April 3, 2020 Share Posted April 3, 2020 2 hours ago, westcoast said: I don't see anything particularly unusual about this brachiopod... I’m not seeing anything too wild about this either, but... I think more in focus pictures outside of the plastic container may help. It’s hard to see the details you mentioned with reflections and scratches on the plastic obscuring the view. The good thing about science is that it's true whether or not you believe in it. -Neil deGrasse Tyson Everyone you will ever meet knows something you don't. -Bill Nye (The Science Guy) Link to comment Share on other sites More sharing options...
blackmoth Posted April 3, 2020 Author Share Posted April 3, 2020 2 hours ago, westcoast said: I don't see anything particularly unusual about this brachiopod... What genus could it belong to? The common Productus type I see from the site (Taiyuan Formation, Shanxi Province) usually have a more or less spherical shape with shallow sulcus. like this one. Link to comment Share on other sites More sharing options...
blackmoth Posted April 3, 2020 Author Share Posted April 3, 2020 4 hours ago, Coco said: Hi, What do you mean by "Productus"? I don’t know what it is. Naming a fossil without its genus is useless. Do you know how many genera have as species "productus" ? We never mention a fossil by its latin species name alone Coco Sorry I am not well trained on fossil jargons. The brachiopods in the site mostly fall into one of the two broad "types" (Productus or Spririfer) , I guess they are two orders (or suborder) so the right term may be Productinida . Link to comment Share on other sites More sharing options...
blackmoth Posted April 3, 2020 Author Share Posted April 3, 2020 15 minutes ago, FossilNerd said: I’m not seeing anything too wild about this either, but... I think more in focus pictures outside of the plastic container may help. It’s hard to see the details you mentioned with reflections and scratches on the plastic obscuring the view. I could not get a better pic as a large depth of focus is needed for a 3D object. Here is sketch. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted April 3, 2020 Share Posted April 3, 2020 Squished Linoproductus, methinks. 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
erose Posted April 3, 2020 Share Posted April 3, 2020 The ornament looks too coarse for Linoproductus in my opinion. Here in Texas there are many genera of similar "Productid" type brachiopods often all in the same formation. I suggest doing some research and seeing if you can find a list of known species from that area. 1 Link to comment Share on other sites More sharing options...
Wrangellian Posted April 4, 2020 Share Posted April 4, 2020 12 hours ago, Coco said: In this case, it must be written "Productus". I understood "(Lino)productus" to be shorthand for "Productus or Linoproductus", and since this is not a scientific paper, it's OK in my mind. 1 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now