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Showing results for tags 'Cretaceous'.
Found 2,388 results
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LINK A GRAVID FOSSIL TURTLE FROM THE EARLY CRETACEOUS REVEALS A DIFFERENT EGG DEVELOPMENT STRATEGY TO THAT OF EXTANT MARINE TURTLES EDWIN-ALBERTO CADENA , MARY L. PARRA-RUGE, JUAN DE D. PARRA-RUGE and SANTIAGO PADILLA-BERNAL [Palaeontology, 2018, pp. 1–13] (slightly less than 6 MB a more popular capsule description of the find 2015-09-oldest-fossil-sea-turtle.pdf @MiseriKing @Tidgy's Dad
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- biomeralization
- calcification
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Found this perfectly split in half tooth that shows the root structure, the shape seems to be mosasaur but not sure. Any thoughts or ideas??
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So the odd Kem Kem tooth I bought online arrived today. It does have a bit of a funky shape to it. • Chunky with a recurve. • Oval cross section. • Mesial carina naturally extends only to 1/2 way down the mesial face. • Distal carina reaches cervix. • No wrinkled enamel. • No obvious interdental succuli. Denticle count at midline - Mesial: 13/5mm Distal: 10/5mm Close up of denticle shape (distal midline):
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- cretaceous
- morocco
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Found this interesting fossil over the weekend, can’t identify the pattern on it. Any thoughts?
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Partial Inner Whorl from Juvenile Turrilite Ammonite
Jeffrey P posted a gallery image in Members Gallery
From the album Cretaceous
Didymoceras binodosum Partial Inner Whorl from Juvenile Turrilite Ammonite Upper Cretaceous Wenonah Formation Matawan Group Big Brook Marlboro, N.J. -
From the album Cretaceous
Turritella trilira Gastropod Shell Imprint Upper Cretaceous Wenonah Formation Matawan Group Big Brook Marlboro, N.J. -
From the album Cretaceous
Ethmocardium welleri Bivalve Shell Imprints Upper Cretaceous Wenonah Formation Matawan Group Big Brook Marlboro, N.J. -
From the album Cretaceous
Eriphyla parilis Bivalve Upper Cretaceous Wenonah or Navesink Formation Matawan or Monmouth Group Big Brook Marlboro, N.J. -
From the album Cretaceous
Hoploparia gabbi Partial Lobster Upper Cretaceous Wenonah Formation Matawan Group Ramanessin Brook Holmdel, N.J. A generous gift from Ralph Johnson -
From the album Cretaceous
Euspira sp. Upper Cretaceous Wenonah Formation Matawan Group Ramanessin Brook Holmdel, N.J. A generous gift from Ralph Johnson -
From the album Cretaceous
Fish Vertebrae Upper Cretaceous Wenonah Formation Matawan Group Big Brook Marlboro, N.J. -
From the album Cretaceous
Juvenile Mosasaur Tooth Upper Cretaceous Wenonah Formation Matawan Group Ramanessin Brook Holmdel, N.J. -
Rainy day today, so here are a few of my micro finds. Mostly they are from Post Oak Creek, a few from the North Sulphur River, and a few from a location somewhere between the bottom of the Eagle Ford and top of the Woodbine. All are late Cretaceous and all are microscope pics, either 10x or 60x. Sorry some do not have any objects for scale. A piece of coprolite from the North Sulphur River with some fish verts, possible Ptychodus tooth, and mystery shiny stuff:
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- nsr
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From the album Cretaceous
Ischyrhiza mira Sawfish Rostral Spine Upper Cretaceous Wenonah Formation Matawan Group Ramanessin Brook Holmdel, N.J. -
Big Bivalve from the Merchantville Formation, New Jersey
Jeffrey P posted a gallery image in Members Gallery
From the album Cretaceous
Panope decisa Partial Bivalve Upper Cretaceous Merchantville Formation Matawan Group Weller's Ravine Matawan, New Jersey -
Echinoid from the Merchantville Formation, New Jersey
Jeffrey P posted a gallery image in Members Gallery
From the album Cretaceous
Cardiaster marylandicus Echinoid Upper Cretaceous Merchantville Formation Matawan Group Weller's Ravine Matawan, New Jersey -
So I am looking for this particular urchin. My grandmother found one when she was a child on the Brazos River outside of Waco TX. Her father sold it to a family friend in the late 1930's and so all I got were the stories of this big round rock that she thought had been "carved by Indians, decorated with dots and snakes". Only much later did she find out that it was a fossilized sea urchin. I am guessing it was a Cidarid, possibly Phyllacanthus or or Paracidaris. All I know is I am determined to find one someday. I would trade my entire collection of fossils for one of those big echies. (If anyone happens to have one just laying around.....let's talk! hahah) . I have been trying to learn the different formations and I stalk the Fossil Forum regularly to learn what I can. When I saw a post by @KimTexan about a Cidarid ID I realized she had found what I had been looking for! (Kim, I am so very jealous of your find!) So, my husband and I set out on one of our "little hunting trips" - we like to take two or three day excursions around Texas - he gets to go ghost hunting at night (we stay at haunted hotels and B&B's) and I get to go fossking during the day. I mapped out some likely spots and we set out from our little town of San Marcos heading north to HIllsboro (excellent home made icecream at A Tisket A Tasket on the Courthouse Square) and then to Granbury where we stayed at the Nutt House Hotel. Stopped at two spots that I thought likely to find my urchin but alas. No luck. Found some nice heart urchins and some "new to me" oysters and a couple of nice chucks of ammonites. I think this was Washita formation? I am using the Rockd App on my phone to try to pinpoint formation since I am definitely not familiar with formations, especially up "north". One of my happy finds was a Pinna Comancheana (far left "cone shaped" fossil) I've only found one other of those. Next morning we headed up to Lake Benbrook Spillway with a stopover at a large roadcut on "Scorpion Hill". This I believe was Glen Rose as most of the finds were heart urchins and gastros. Nothing new to me here, but I did find some better specimens than I had collected previously. Lake Benbrook was a neat place. Two other fossikers were out, I went over to say hello, wondering if they were experienced hunters and knew the area, but nope, they were new to Lake Benbrook, just as I was. I did not get to catch up with them after to see if they found anything good. I was amazed a the large ammonite impressions in the limestone beds. My camera wasn't working, so alas, no pictures. Found lots of nice Oxytopodiceras fragments and a couple of others I haven't identified yet. Pics in next post:
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- hico
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Hi I purchased this partial sauropod vertebrae and I’m in the process of glueing it back together. It’s from Brighstone Bay, Isle of Wight and it’s early Cretaceous. The centrum diameter is approximately 6 inches and I’m guessing but the neural spine looks like it would’ve been about 12 inches tall. Does anyone have any suggestions for an ID. Thanks Nick
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- vertebrae
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I found this in Benbrook Tx which is a Cretaceous area. Is this Mortoniceras sp.? im going to attempt to clean between the ribs but am tempted to try and keep some of the matrix attached where the embedded bivalves are. I think they tell a great story.
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From the album Sharks and their prey ....
Carcharias sp (?) Cretaceous of Colorado Fox Hills Sandstone© Matthew Brett Rutland
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Recently made a trip to Ramanessin Brook and Big Brook. I was able to confidently identify most of my finds, except for these few. Here is what I think they are. Please let me know what you all think. Thank you! #1- coprolite #2- coprolite #3- petrified wood #4- petrified wood #5- bone fragment - is there any way to know where it came from? #1 #2 #3 #4 #5
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Found at bottom of Eagle Ford / top of Woodbine, the Cenomanian and Turonian age. No idea on the first on microscope at 60x, 2mm at longest part. I may have to get a better pic. Second and third pics are the same piece at 10x and 60x, scale in second pic is mm, so 10 mm length. End kind of looks like a tooth, but a jaw would have more than one tooth, so that part makes me think not tooth. I think it is unique enough looking that someone will know what it is. If you look at the 10x picture, some of it flaked off, you can kind of see an outline to the right of how long it was. thanks in advance
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Here's my latest (tiny) acquisition from the Kem Kem: Looking at the general morphology and almost 'hooked' shape of the denticles on the distal carina, I'm not sure whether this one fits more as a juvenile carcharodontosaurid, juvenile abelisaurid or would fit closer to the dromaeosaurid-like teeth described here?: Mesial midline denticle count: 9/2mm Distal midline denticle count: 7/2mm Both carinae extend to the base. Distal edge: Mesial edge: Cross section (anterior of tooth facing top): Due to the strong lateral compression & apparent lack of interdental succuli, I would hedge my bets on juvie abelisaur, but those denticles are making me doubt it a bit. Anyone got any thoughts?
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Tree Resin On The Beach Results In Ammonite Fossil Encased In Amber 99 Million Years Later
Scylla posted a topic in Fossil News
Many other species caught in this piece of Amber too https://www.independent.co.uk/news/science/ammonite-prehistoric-amber-myanmar-spider-cockroach-wasp-a8911546.html?amp- 14 replies
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- annonite in amber
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