wildchild33 Posted October 4, 2016 Share Posted October 4, 2016 This is the first petrified bone I have found, is that the correct thing to call it? Hope the image is good enough, it is just one single row of rounded teeth. Dying to know what it is! North Texas creek. Link to comment Share on other sites More sharing options...
Fruitbat Posted October 4, 2016 Share Posted October 4, 2016 NICE find, wildchild33! Looks like some kind of fish jaw fragment but I'm not expert enough to identify it any farther than that! -Joe Illigitimati non carborundum Fruitbat's PDF Library Link to comment Share on other sites More sharing options...
BobWill Posted October 4, 2016 Share Posted October 4, 2016 Very nice. Probably Enchodus jaw. "Petrified" is a very general term that's not really scientific but then neither is "fossilized". We still we use them when we don't know for sure which of the dozen or so different kinds of preservation is represented. "Mineralized" is specific enough for your "fossil". Someone should do a pinned topic on the different ways fossils are preserved unless it's already been done. 1 Link to comment Share on other sites More sharing options...
wildchild33 Posted October 4, 2016 Author Share Posted October 4, 2016 Thanks! Yes it would, and does mineralized describe most wood? Basically the original material replaced, is it what replaces it & how that determines preservation ? I dont have a good camera but do have the help & knowledge of Bone2stone who lives a couple miles from me! Will run it by for a id. Link to comment Share on other sites More sharing options...
BobWill Posted October 4, 2016 Share Posted October 4, 2016 I think mineralization is the same as replacement where the original material is replaced with another mineral over time. Permineralization is when the space between cells fills in with minerals to preserve the shape and petrification is permineralization with silica binding to cellulose which crystalizes to preserve the shape of the cells. Fossils can also be formed by recrystallization, compression, desiccation (freezing, drying, or immersion in peat bogs or tar pits), bioimmuration, resin inclusion, or preservation as casts or molds or as traces. I believe there may be others but I don't really understand everything I know about this. lol 8 Link to comment Share on other sites More sharing options...
bone2stone Posted October 4, 2016 Share Posted October 4, 2016 Bob that explanation could not have been improved upon. The terminology is teacher grade word for word. Jess B. Link to comment Share on other sites More sharing options...
bone2stone Posted October 4, 2016 Share Posted October 4, 2016 1 hour ago, wildchild33 said: Thanks! Yes it would, and does mineralized describe most wood? Basically the original material replaced, is it what replaces it & how that determines preservation ? I dont have a good camera but do have the help & knowledge of Bone2stone who lives a couple miles from me! Will run it by for a id. You may not have to come by. First, where did you find it? Jess B Link to comment Share on other sites More sharing options...
bone2stone Posted October 4, 2016 Share Posted October 4, 2016 1 minute ago, bone2stone said: You may not have to come by. First, where did you find it? Jess B It looks to be from the Eagle Ford. If so then it maybe Pachy. Pachyrhizodus Jess B. Link to comment Share on other sites More sharing options...
wildchild33 Posted October 4, 2016 Author Share Posted October 4, 2016 I will second that! Bobwill you answered that with clarity and answered all questions I had on that subject. Found that at a creek Jessy, see when I'm not distracted by cool little frogs and strange things(to me) I can actually find things! Tried to get better image. Ceative title huh. : ) Link to comment Share on other sites More sharing options...
wildchild33 Posted October 4, 2016 Author Share Posted October 4, 2016 And would this.be it's vert by any chance? Link to comment Share on other sites More sharing options...
bone2stone Posted October 4, 2016 Share Posted October 4, 2016 That is obviously a vertebra. Also that jaw bone most likely washed from an Eagle Ford. That creek & some side washes cut through the Woodbine & the Eagleford as it gets close to the Trinity. BTW: You really should have posted this very on it's own thread. Nice vert I might add. Jess B. On 10/4/2016 at 3:58 AM, wildchild33 said: And would this.be it's vert by any chance? Link to comment Share on other sites More sharing options...
snolly50 Posted October 4, 2016 Share Posted October 4, 2016 Hello, congrats on your finds. Your camera is too close to the subject. When photographing small objects you have to be careful not surpass the minimum focus distance of the lens. It's kind of counter-intuitive; but back off some. After you obtain a properly focused image, crop the photo to make the subject take up much of the frame. You can only go so far with this, as you are loosing resolution as you crop smaller and smaller. Good luck, have fun. Human beings, who are almost unique in having the ability to learn from the experience of others, also are remarkable for their apparent disinclination to do so. - Douglas Adams, Last Chance to See Link to comment Share on other sites More sharing options...
Raggedy Man Posted October 4, 2016 Share Posted October 4, 2016 The issue with your pictures is lighting and you holding the object. Go outside and put the piece on a table. Then take the photos. ...I'm back. Link to comment Share on other sites More sharing options...
Al Dente Posted October 4, 2016 Share Posted October 4, 2016 Your vert is a shark vertebral centrum. It looks like a very nice one. Good find. 1 Link to comment Share on other sites More sharing options...
snolly50 Posted October 4, 2016 Share Posted October 4, 2016 7 hours ago, Raggedy Man said: The issue with your pictures is lighting and you holding the object. Go outside and put the piece on a table. Then take the photos. This is indeed excellent, sound advise that would have benefited a lot of the images on the Forum; if it had been heeded. However, great light and steady support will not alter the MFD on any rig. The Minimum Focal Distance varies with each lens; but it is a factor with all cameras, even iphones. Generally, the longer the lens the greater the MFD. For my big 200 - 500mm zoom it's a whopping seven and a half feet! Good luck, have fun. 2 Human beings, who are almost unique in having the ability to learn from the experience of others, also are remarkable for their apparent disinclination to do so. - Douglas Adams, Last Chance to See Link to comment Share on other sites More sharing options...
Raggedy Man Posted October 4, 2016 Share Posted October 4, 2016 If you have a box, say the size of a large flat rate shipping box, you can cut a hole in the side and use it as a peep hole for your camera phone. Place an item inside the box below the hole. Then place your phone camera over the hole with the flash on, no zoom. Now try taking the picture. This should help with the focus and should be within the focal range of the camera. Here is a box I used in the past. This is the result. Without zoom. Now, with 3.5x zoom I hope this helps you in future posts. Best regards, Paul ...I'm back. Link to comment Share on other sites More sharing options...
wildchild33 Posted October 5, 2016 Author Share Posted October 5, 2016 Thank you for the info & tip everyone! I will give it a try! I have a cheap cell phone so not sure anything will really help, if I get too far away then you can't see any detail, and often I'm too impatient to wait until daylight! Link to comment Share on other sites More sharing options...
fifbrindacier Posted October 5, 2016 Share Posted October 5, 2016 On 4 octobre 2016 at 8:10 AM, wildchild33 said: Thanks! Yes it would, and does mineralized describe most wood? Basically the original material replaced, is it what replaces it & how that determines preservation ? I dont have a good camera but do have the help & knowledge of Bone2stone who lives a couple miles from me! Will run it by for a id. On your photo, the stones and snakes are neat, so i think this is the good distance to take your photos. By the side, you have made very nice finds. "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
wildchild33 Posted October 5, 2016 Author Share Posted October 5, 2016 Good observation! Thanks! It's really cool to be able find a few decent things so close to home in the middle of the city! Ok took some more from distance and the further out seems less resolution? Definatly doesn't produce images made to enlarge. Going to try a trick someone suggested, putting it in box with peephole. Link to comment Share on other sites More sharing options...
caldigger Posted October 5, 2016 Share Posted October 5, 2016 As stated before, it is always best to have a plain solid background for the picture. Having so much for the camera to have to focus on will always affect the shot. Keep it simple. A plain background and your subject period. Link to comment Share on other sites More sharing options...
tmaier Posted October 5, 2016 Share Posted October 5, 2016 She has a "fixed focal length" camera. That means there is no adjustment to the focus. The lens is designed to make everything from about 2.5 feet to "infinity" have the same focus. The down side to doing that is that there is no sharp focal plane, and even things that are "in focus" end up kind of blurry, because the focal plane has been smeared out to such a long depth. So, in short, with this camera that last photo is as good as it gets. If you want better, need to find a better camera with adjustable focus and macro ability. 1 Link to comment Share on other sites More sharing options...
wildchild33 Posted October 5, 2016 Author Share Posted October 5, 2016 Thank you for that explanation tmaier, that pretty much wrapped it up. Link to comment Share on other sites More sharing options...
tmaier Posted October 5, 2016 Share Posted October 5, 2016 You collect so many cool looking things, you should look into getting a camera to take proper pictures of them! Once you start doing photographs of the world of small objects, I think you will get hooked on it. The Nikon Coolpix series of cameras have a macro feature with adjustable focus, and are less than $100. Link to comment Share on other sites More sharing options...
abyssunder Posted October 5, 2016 Share Posted October 5, 2016 A 4 megapixel camera will make his job and I think is not so expensive. " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
wildchild33 Posted October 6, 2016 Author Share Posted October 6, 2016 Wishful thinking. Seeing as how I will be homeless in about a month don't think I will be buying a camera. Link to comment Share on other sites More sharing options...
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