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Showing results for tags 'atco formation'.
Found 25 results
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I am right now out in the field, attempting to extract a string of articulated reptile vertebrae in the lower Atco. It is in a soft marl bed just a few feet above the basal Atco. There seems to be articulated ribs associated with the specimen, and so far I have uncovered 14 verts. 9 of them were lose of the surface and bagged in ziplocks, but now I am trying to get the rest out. If anyone has any advice, I need it! The specimen also has articulated ribs. I want to get this thing home tonight, and not destroyed. This is is my first time attempting to extract vertebrae, and I want to
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- so much younger than today
- when i was younger
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Scaphites sp. (semicostatus?) next to smaller confirmed S. semicostatus
Heteromorph posted a gallery image in Members Gallery
From the album: Self-Collected
North Texas. Atco formation. Upper Coniacian. Found at a site further to to south than my normal Atco sites. It is larger and just generally more robust than any of my other Scaphites semicostatus specimens. The smaller S. semicostatus (bottom) came from one of my normal Atco sites. Compare with the S. semicostatus holotype here: http://www.thefossilforum.com/index.php?/gallery/image/57475-scaphites-semicostatus-holotype/&context=widget -
From the album: Self-Collected
North Texas. Atco formation. Upper Coniacian. Found at a site further to to south than my normal Atco sites. It is larger and just generally more robust than any of my other Scaphites semicostatus specimens. You can see some of the tubercles still stuck in the impression. Compare with the S. semicostatus holotype here: http://www.thefossilforum.com/index.php?/gallery/image/57475-scaphites-semicostatus-holotype/ -
From the album: Self-Collected
North Texas. Atco formation. Upper Coniacian. Found at a site further to to south than my normal Atco sites. It is larger and just generally more robust than any of my other Scaphites semicostatus specimens. Compare with the S. semicostatus holotype here: -
From the album: Self-Collected
North Texas. Atco formation. Upper Coniacian. Found at a site further to to south than my normal Atco sites. It is larger and just generally more robust than any of my other Scaphites semicostatus specimens. Compare with the S. semicostatus holotype here: http://www.thefossilforum.com/index.php?/gallery/image/57475-scaphites-semicostatus-holotype/&context=widget -
From the album: Self-Collected
North Texas. Atco formation. Upper Coniacian. Found at a site further to to south than my normal Atco sites. It is larger and just generally more robust than any of my other Scaphites semicostatus specimens. Compare with the S. semicostatus holotype here: http://www.thefossilforum.com/index.php?/gallery/image/57475-scaphites-semicostatus-holotype/&context=widget -
From the album: Self-Collected
North Texas. Atco formation. Upper Coniacian. Found at a site further to to south than my normal Atco sites. It is larger and just generally more robust than any of my other Scaphites semicostatus specimens. Compare with the S. semicostatus holotype here: http://www.thefossilforum.com/index.php?/gallery/image/57475-scaphites-semicostatus-holotype/ -
From the album: Self-Collected
Atco Formation. Upper Coniacian age. North Texas. Specimen 1. -
From the album: Self-Collected
Atco Formation. Upper Coniacian age. North Texas. Specimen 1. -
From the album: Self-Collected
Atco Formation. Upper Coniacian age. North Texas. Specimen 1. -
From the album: Self-Collected
Atco Formation. Upper Coniacian age. North Texas. Specimen 1. -
From the album: Self-Collected
Atco Formation. Upper Coniacian age. North Texas. Specimen 1. -
From the album: Texas Cretaceous Fossils : Sharks and Rays
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From the album: Texas Cretaceous Fossils : Sharks and Rays
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- texas
- atco formation
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From the album: Texas Cretaceous Fossils : Sharks and Rays
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From the album: Texas Cretaceous Fossils : Sharks and Rays
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From the album: Texas Cretaceous Fossils : Sharks and Rays
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Shark Hybodont Meristodonoides sp, Atco Formation
JamieLynn posted a gallery image in Members Gallery
From the album: Texas Cretaceous Fossils : Sharks and Rays
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Hi everyone! I went to Post Oak Creek, Texas a few weeks ago and got a decent haul. Including three teeth that I think are from some rare species that I wanted to confirm my id on. I think the first two are Cretoxyrhina mantelii and the third is Protolamna. I'm particularly unsure with the second one since it seems to have a slight nutrient groove. The first one also has damage where there would have been cusps so I'm not sure if it's a different Cretoxyrhina species or a different genus entirely. I'm fairly certain the creek is Atco formation. I know it's either
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I’m not really sure I’ll be to get an ID given the condition, size and difficulty in photographing them but I thought I’d try. First tooth. Just over 1mm. This one is from Atco Formation micro mix. There was an Odontaspis on Elasmo that looked somewhat similar but I really don’t know.
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In June of 2018, Kieth Minor alerted me to a new apartment complex that was being developed in the middle Atco Formation of North Texas. They were cutting a huge cubic area of rock out of a hillside, piling up multiple large mounds of Atco which seemed to be begging for someone to carefully search out their freshly exposed contents. On the 15th of that month we got to the site, Kieth asked permission of the site foreman for us to carefully take a look around during the crew's work hours, and we made our way into the pit. We were on a mission to save as many ammonites as we could.
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- middle atco
- bentonite
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Excerpt from W. J. Kennedy (1984): " Family NOSTOCERATIDAE Hyatt, 1894 [Jouaniceratidae Wright, 1952, p. 218; Bostrychoceratinae Spath, 1953, p. 16; Emperoceratinae Spath, 1953, p. 17; Hyphantoceratinae Spath, 1953, p. 16] Genus TRIDENTICERAS Wiedmann, 1962 Type species. Turrilites tridens Schlüter, 1876, p. 136, pl. 35, fig. 9; pl. 36, fig. 1; by original designation. Diagnosis. Turricone, ornamented by strong, flared ribs with three rows of tubercles, the lower two close together, and with non-tuberculate finer ribs between. Discussio
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- atco formation
- lasswitz 1904
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I found this Phlycticrioceras trinodosum heteromorph specimen in June of 2018 whilst hunting the middle/upper Coniacian Atco formation. It is the largest fragment of this species that I am aware of, having a whorl height of 51 mm as opposed to 47 mm of the largest fragment I've seen published. This genus is a bigger, rarer, and (mostly) younger cousin of Allocrioceras. I sent pictures of it to Keith Minor and he pointed out that there was also an echinoid sticking out of the specimen, something which I had totally missed! With much of the echinoid still stuck in the living chamber it is hard t
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- micrasteridae
- micraster
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Upper Coniacian Austin Chalk Vertebrate Remains, North Texas
Heteromorph posted a topic in Fossil ID
At a site where I have been finding heteromorphs, I have recently come across some vertebrate material. So far I have only found three vertebrate specimens; one bone fragment and two fish scales. I am hoping to get some information on their affinities. I am most interested in the fish scales, since it seems they would be the most easily identified. The site is in North Texas, the Austin Chalk group, Atco formation, upper Coniacian stage. For biostratigraphic reference, at this same site I have also found the ammonites Protexanites planatus, Phlycticrioceras trinodosum, Tridenticer- 13 replies
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- austin chalk group
- atco formation
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Trip to North Texas: Whiskey Bridge, Waco and Midlothian
dre464 posted a topic in Fossil Hunting Trips
In August, I received an invitation to join a group to hunt fossils and minerals at a cement quarry in Midlothian, Texas on September 10th. It was my very first field trip with a group, and I was extremely excited. I put my dad and my ten-year-old daughter on the list as well, and we figured we'd make a weekend of it. I had to be back on Sunday morning, so we figured we'd leave early Friday morning and squeeze two days out of the trip. After all, its a little bit of a drive to get to Midlothian from Kingwood (220 miles), and we would be passing some great sites that my dad had never visite- 11 replies
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- whiskey bridge
- waco research pit
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