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Showing results for tags 'echinoid'.
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From the album: Fossil Collection
Clypeaster with predation marks -
Found in Parker County, Aledo area, Texas, 3-26-21. Limestone base.
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So I am hunting the Peace River and finding good stuff, like mastodon verts, horse teeth, colorful hemis and into my sieve pops a broken sand dollar...... and I do a little dance , got a smile ear to ear , because I am hoping , with a little help from my friends that this this Echinoid will help to identify the formation I am hunting, maybe Pliocene or middle Miocene. There are a lot of years between them. @Harry Pristis indicated that the silicified shells might more likely imply middle Miocene. The echinoid has an interesting shape and no holes.... I think it is possible.... @Coco, @MikeR, @Sacha
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I am hoping that someone can ID these echinoids for me. I do not remember where I got them from and I do not know the location that they were found, but I am thinking Texas. This first group of three I believe that they might be Phymosoma sp. , but I am not sure. Her is the other one that I am hoping for an ID on. Thanks
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From the album: Texas Echinoids, ERose
another example of this odd large Salenid from the Microzone of Unit 2, Lower Member, Glen Rose Formation, Trinity Group (Albian) Conal County, TX -
From the album: Texas Echinoids, ERose
another example of this odd large Salenid from the Microzone of Unit 2, Lower Member, Glen Rose Formation, Trinity Group (Albian) Conal County, TX -
Today is my 50th birthday so I wanted to select my fifty favorite fossil finds to present. But....because I am obsessive, I couldn't settle on just 50. So here's 150. My favorite 150 fossil finds. And there's still more - but then it would be 250 or 555...I don't know. Anyways, enjoy. Mostly Texas, some from Utah, Florida, North Carolina, New York and England (denoted by the state initials or UK). Almost all were found by me, except about 4 which were gifted to me. I did actually narrow it down to 50...initially. But then I had to do pages for the rest of them because I didn't want them to feel left out....
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Plagiochasma texanum Smith & Rader and Goniopygus whitneyi Smith & Rader
erose posted a gallery image in Member Collections
From the album: Texas Echinoids, ERose
Unit 3, Upper Member, Glen Rose Formation, Trinity Group (Albian) Kendall County, Texas.-
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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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From the album: Texas Echinoids, ERose
Smith and Rader (2009) mention the occurrence Pygaster based on incomplete material. This specimen is from the echinoid marker bed of Unit 2, Lower Member, Glen Rose Formation, Trinity Group (Albian) Comal County, Texas. -
From the album: Texas Echinoids, ERose
Found in the Lower Member, Glen Rose Formation, Trinity Group (Albian) Comal County, Texas. This relatively large Leptosalenia has very straight ambulacra and a large number of interambulacral tubercles. I know of approximtely 5-6 specimens collected from three locations.-
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From the album: Texas Echinoids, ERose
Bee Cave Member, Walnut Formation, Fredericksburg Group (Albian) Travis County, Texas -
From the album: Texas Echinoids, ERose
Unit 3, Upper Member, Glen Rose Formation, Trinity Group (Albian) Kendall County, Texas. This specimen surprised as I had previously understood them to be only found in Lower Member but apparently they range higher in the formation (pers. comm. W. Rader) -
From the album: Texas Echinoids, ERose
Bee Cave Member, Walnut Formation, Fredericksburg Group (Albian) Travis County, Texas. Specimen is about 12-15mm in diameter-
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From the album: Texas Echinoids, ERose
Bee Cave Member, Walnut Formation, Fredericksburg Group (Albian) Travis County, Texas In the lower part of the Walnut formation there is a common variation on the much more common L. rosana that are always small and have a distinctly round apical opening as compared to the typical pentagonal shape of L. rosana. They are otherwise the same as L. rosana and several authors consider L. whitneyi synonymous with L. rosana. -
Pliotoxaster comanchei (Clark) & Heteraster (Enallaster) obliquatus (Clark)
erose posted a gallery image in Member Collections
From the album: Texas Echinoids, ERose
Comparative photo of the two Glen Rose heart urchins. These are from the "Salenia texana" marker bed at the top of Unit 2, Lower Member, Glen Rose Formation, Trinity Group (Albian) of Comal County, Texas. Note all five ambulacra are depressed in Pliotoxaster versus only the anterior ambulacra in Heteraster-
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From the album: Texas Echinoids, ERose
A growth series from an exposure of the Goodland Formation, Fredericksburg Group (Albian) near Fort Worth, Texas. -
From the album: Texas Echinoids, ERose
A good sampling of this typically small "salenia" from the echinoid marker bed of Unit 2, Lower Member, Glen Rose Formation, Trinity Group (Albian) Comal County, Texas-
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From the album: Texas Echinoids, ERose
This specimen appears to match the species C. ovatus which was previously known from the slightly older Glen Rose Formation. This one is from the Bee Cave Member, Walnut Formation, Fredericksburg Group, Travis County, Texas. -
This specimen comes from the 1980 dredge spoils of the C and D Canal. The type specimen for this species comes from the Navesink Formation exposure of the same canal, not far away. Known by locals, it was not actually described until 1986. Although not the most common of species at this locality, and almost unknown outside of Delaware, these miniscule urchins were nonetheless plentiful at the Reedy Point spoils. Recent excavation for barrow removed most of the sand where my specimen was found.
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GlenRose Formation 105 - 115 MYA Found near roadcut in San Antonio First I want to warn you, These are low quality photos due to it being night and having a dim light in translucent glass. So if you are unable to further identify due to poor quality photos, I understand wholeheartedly. Without further adieu, Here is the lot Below I will post individual photos in the comments. Firstly I'd like to state a few in which I think I know the answer. 1 I believe is a Neithea irregularis 2. I don't know if its a messed up ammonite, echinoid, gastropod or what it could be. 3. mess of gastropods I dont know 4. some kind of turritella? For 5 I think the middle 2 and far right one are Heteraster obliquatus while the far left two are Pliotoxaster comanchei due to how its only depressed on one of the ambulacrum in some and all 5 in the others. I feel that 6 might be a Leptosalenia texana but I can't tell the difference between a Paracidaris texanus from the other. 7. I am 99% sure its Porocystis globularis 8. Bivalve I don't know. 9. very odd bivalve I've never even seen or heard of 10. 99% sure it is Tylostomas and nice ones at that. If any of you could help me out, I'd be very grateful to label the correct names on these wonderful specimen
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Thanks to a post from Candace ( @thelivingdead531 ) I found out about the Aurora Fossil Museum's box o' matrix that they sell! (all moneys benefit the museum, which was a bonus). I got two Gallon Bags of matrix to sift through and wow....some really great stuff! They send a really good ID sheet too. But of course, there's even more info here on the FF! So here are some of my favorite finds so far. I've only gone through about 6 cups of matrix!! SO MUCH MATRIX! I havn't really done much ID'ing yet (the shark teeth) but my favorite by far is the crab stuff....love those pincers!! And the color of the shark teeth is amazing....purples and pinks -maybe that's why it's Aurora? I certainly have enough to keep me entertained for the upcoming week (which, if you aren't in Texas....we are going to be in the single digit temps (Farenheit) with predicted 4 inches of snow....which is COMPLETELY unprecedented to have two snow storms in a winter...) I'm staying INSIDE with my space heater. And looking through matrix.... Crabby bits Ray Teeth Shark Teeth Fish Teeth Echinoid, Coral and Gastropod a Vert and some unknowns...probably fishy bits
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I FINALLY found one of the echinoids I've been looking for - a Pseudodiadema from the Lower Glen Rose formation of Texas. I have collected fragments from no less than FIVE different locations and @JohnJ assured me there was (to paraphrase) one out there with my name on it. So I believed him! And yes, i did finally stumble across my Pseudodiadema! Albeit hella squished! But that's okay...it's "technically" whole even if it won't be winning any beauty awards....I love it. I apparently have a thing for squished echinoids. Three of my favorites (that I have only found the single specimen so far ) are rather squished. Not broken, amazingly, just.....squished. Geologic forces at work, I guess. So this day....another really nice warm winter Texas day (but windy as heck- not good for my allergies, but I wore my mask), I headed out to another of my favorite Glen Rose spots (where I found that Heterosalenia last month), not really expecting to find much of anything, just out and about and saw this little lump sticking out of the clay. I dug it up and saw it was a big echie of some kind or another. Took it home, washed it off, and thought i had found a Tetragramma tenerum (wasn't really looking at it closely, just saw the tuburcles were perforate so not a phymosoma) and fortunately, John saw the picture and gave me the happy news that it was a Pseudodiadema! So while not exactly adding a new one to my collection...at least adding a better specimen! Also found a nice big Pagurus banderiensis crab claw - complete with top and bottom pincer (usually just find one or the other) And while I am showing the stuff from the Glen Rose, I also brought home a bag of dirt from the other site (the other day) and found some nice little tiny Crab Claws plus something.....really odd. Round Black Crinoids. I have found Isocrinus (the star shaped crinoids there) and a few of them were black (they are usually beige) but I have never seen nor heard of round crinoids from the Glen Rose Formation. Anyone know anything about that? They are mostly TINY - 2-3 mm but I did find one that is 6mm. I swear it looks just like the New York Devonian crinoids, but the matrix in the center is definitely Cretaceous! Strange strange....Anyways...here's the pics! Pseudodiadema aguileria 2 inches Top view....see how squished?? Didn't look like much in the ground, but it caught my eye! Crab Claw Calianassa sp 3 mm Crab Claw Pagurus banderiensis 25 mm Crinoid 6 mm Little ones - 2-3 mms the first one I found attached to the underside of a star shaped Isocrinus:
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2021 First Texas Hunt - Echies & Shark & Crab, Oh MY!
JamieLynn posted a topic in Fossil Hunting Trips
January in Texas is usually, weather wise, fantastic hunting. For seasonal allergy sufferers (like me) it can be miserable. But, we had a GREAT rain...two days of decent downpours and the temps were in the upper 60s, so, hoping the cedar pollen had been knocked out of the air a bit by the rains....I donned my mask and spent three hours out in the great outdoors and was I ever rewarded for my "perseverance"!!! hahahahha I had been hoping to find a Glen Rose Formation (Lower Cretaceous) Shark Tooth for a couple of years. I knew they could be found! Erich ( @erose) told me so and I believe him, usually! hahhaha. Well, Mother Nature decided to gift me one on this first hunt of the year! Plus, it was a bit of an Echinoid bonanza....nothing "new" to me, species wise, but a couple of really nice examples (four actually, of differing sizes!) of Hyposalenia phillipsae and a better preserved Paraorthopsis comalensis than I had. But what really tricked me was the Pygopyrina hancockensis. They are usually oval and i found this one (which turns out was just squished) and REALLY thought I'd found a Pygaster (which I DON'T have) so I got really excited until I got it home and realized I'd been fooled. Ah well, I found a Shark Tooth (Plus a nice big crab claw, too) so......it was a GOOD DAY. Shark Tooth Protolamna sp. 5/8 inches (15 mm) In situ (with lotsof Foramnifera Orbitolinas! A Quartet of Hyposalenia phillipsae echinoids: (Biggest is 3/8 inch) A very nice Paraorthopsis comalensis Size: 1/2 inch A very squished Pygopyrina hancockensis Size- 3/4 inch And a big honking crab claw - Pagurus banderiensis Size 7/8 inch.thumb.jpg.e7050571b65e5262716a183ae2921125.jpg)
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(?) Walnut Fm, near Kerrville, Texas
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