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Showing results for tags 'Tetragramma'.
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From the album: Texas Cretaceous Fossils: Echinoids
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Echinoid Tetragramma texanum Walnut Formation
JamieLynn posted a gallery image in Member Collections
From the album: Texas Cretaceous Fossils: Echinoids
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Echinoid Tetragramma streeruwitzi Fort Worth Formation
JamieLynn posted a gallery image in Member Collections
From the album: Texas Cretaceous Fossils: Echinoids
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- cretaceous
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From the album: Texas Albian (Cretaceous)
Tetragramma sp. Albian Texas Found at site #14, dubbed by my step brother and I as the "Anti-wishing well" - but it sure seems like a wishing well to me! It's a tiny site at the base of an ephemeral waterfall revealing comanche peak shales - a lithological feature I was unaware of being possible in the comanche peak until the site's discovery.-
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I'm really enjoying tinkering with my phone photography skills, and this composure of a February Tetragramma is probably my best image I've made with this technique so far. It still doesn't have the same clarity as a proper camera would show (immediately evident when you zoom in), but I think it still makes a nice first impression.
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From the album: Texas Cretaceous Fossils: Echinoids
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From the album: Proudest finds
My first Tetragramma sp. echinoid, found in a micro exposure of extremely fossiliferous mudstone from the Comanche peak formation-
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- central texas
- comanche peak fm
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As most of you should be able to easily tell, I know virtually nothing about invertebrates, despite the good potential my area has for them. However, I was super fortunate the other day to find what ranks among my two best invertebrate finds: My first Tetragramma echinoid While looking for flint nodules to knap, my step brother encountered a tiny little oasis of shale/clay in a vast sea of limestone. He wasn't immediately interested, but still mentioned it when he was talking about how he also found some solid, climbable boulders in the same area. From the photo, I didn't have high hopes, but I still went anyway, mostly to check out the climbing potential there - though I brought some of my fossil collecting gear too. The area is mapped as Edwards Limestone, so I'm not sure what formation that little tongue of shale actually is - yet I was pleased to find that it was heavily fossiliferous, with many common invertebrates. Here's the entire exposure, shown below: the shadows make it hard to see, but there really is not much shale/clay visible under that limestone overhang anyway With some inspection, I then saw this: Isn't that a beautiful sight? While I didn't know the specifics of what I was seeing, I knew at least that it was a quality echinoid, and I was excited by its appearance. It was in solid shape and was removed easily. Only after posting a photo or two on my Instagram story did I realize that it's more than just a nifty echinoid, when @facehugger mentioned that it might be a Tetragramma! Here are some more photos of it when I got home: Rarely does a fossil hunt of this nature end up this lucky for me - an uncommon genus in a microscopic exposure. Because of that, I thought it was worth posting about the whole trip!
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- 23
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- echinoid
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As most of you should be able to easily tell, I know virtually nothing about invertebrates, despite the good potential my area has for them. However, I was super fortunate the other day to find what ranks among my two best invertebrate finds: My first Tetragramma echinoid While looking for flint nodules to knap, my step brother encountered a tiny little oasis of shale/clay in a vast sea of limestone. He wasn't immediately interested, but still mentioned it when he was talking about how he also found some solid, climbable boulders in the same area. From the photo, I didn't have high hopes, but I still went anyway, mostly to check out the climbing potential there - though I brought some of my fossil collecting gear too. The area is mapped as Edwards Limestone, so I'm not sure what formation that little tongue of shale actually is - yet I was pleased to find that it was heavily fossiliferous, with many common invertebrates. Here's the entire exposure, shown below: the shadows make it hard to see, but there really is not much shale/clay visible under that limestone overhang anyway With some inspection, I then saw this: Isn't that a beautiful sight? While I didn't know the specifics of what I was seeing, I knew at least that it was a quality echinoid, and I was excited by its appearance. It was in solid shape and was removed easily. Only after posting a photo or two on my Instagram story did I realize that it's more than just a nifty echinoid, when @facehugger mentioned that it might be a Tetragramma! Here are some more photos of it when I got home: Here it is cleaned: Rarely does a fossil hunt of this nature end up this lucky for me - an uncommon genus in a microscopic exposure. Because of that, I thought it was worth posting about the whole trip!
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From the album: Texas Echinoids, ERose
Undescribed Tetragramma sp. Unit 3, Upper Member, Glen Rose Formation, Trinity Group (Albian) Kendall County, Texas© E Rose
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It has been a while since I did an Echies of Texas post...too long!! But it's been an echinoid dry spell here for me.....I've found some lovely stuff, but just not anything NEW to me! I was given a couple of Echies that were new to me but I didn't TECHNICALLY find them, so they don't really count (for me...i'm particular that way!) . I will post pics of them because I am happy to have them in my collection regardless!! BUT, back to my personal urchin drought. . It's getting hot in Texas (Summertime...duh). But I still like to get out occasionally. I went a little further afield last week (only taking short day trips during this Covid Time) than my usual hunting grounds and found a new spot of Glen Rose Formation and found....AN URCHIN NEST! I've heard about these...a clump of multiple echies in one spot. I was too excited about my find and forgot to take pictures but there were five phymosomas in one spot...big ones too! And then a little further along....my first Tetragramma from the Glen Rose Formation! YAY! Drought broken! And, when it rains it pours. A few days later at another Glen Rose spot...i found more Tetras. And....I am pretty sure....a Polydiadema! So, needless to say, my Echie Game is back on. There are quite a few specific urchins that are still eluding me and not for lack of trying! I have been to the only spots I know of that I know they have been found, but alas. So the search continues! Another recent find, not new to me, but a really nicely preserved Phymosoma : (from a site just up the road from the Echie "nest") My first Tetragramma from the Glen Rose: Tetragramma tenerum .....i think. The Echinoid "nest" (plus the nice phymo from the other site up the road) My biggest Phymosoma to date....2 1/4 inches Another Tetragramma from the Glen Rose: And I THNK....a Polydiadema! Plus a nice little Heteraster with good detail Plus - My "acquisitions" to my collection thanks to my Fossil Friend John (who so kindly gave them to me!) An amazing Paracidarid (Glen Rose Formation) And a Globator parryi bottom of Globator:
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From the album: Echinodermata
2.5cm. diameter. Early Cenomanian, Late Cretaceous. From Falaise du Cap de la Heve, Normandy, France.-
- cenomanian
- le havre
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Fossil Assemblage, Kcw Site 2, Callahan Co., Tx (Aboral)
gwestbrook posted a gallery image in Member Collections
From the album: Kcw Site 2, Callahan Co., Tx
An assemblage of fossils found in Lower Cretaceous, Comanche/Walnut Formation at a site in SE Callahan Co., Tx. Phymosoma texana, Coenholectypus planetus?., Tetragramma sp. (all showing Aboral surfaces), Tylostoma sp.- 3 comments
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- Callahan
- Coenholectypus
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Fossil Assemblage, Kcw Site 2, SE Callahan Co., Tx (Oral)
gwestbrook posted a gallery image in Member Collections
From the album: Kcw Site 2, Callahan Co., Tx
Same fossil assemblage from SE Callahan County showing Oral surfaces.-
- callahan
- Coenholectypus
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