Search the Community
Showing results for tags 'microfossil'.
-
From the album: Hell Creek Formation Microsite
Various microfossils representing a small subset of the paleo-community of the Hell Creek formation. Do you recognize them all? -
From the album: Hell Creek Formation Microsite
I'm now more certain after finding a couple of publications (one published this June after my initial guess) that this small tooth is paravian. Given how different it is from the known dromaeosaurids and troodontids from the well-sampled HCF, my amateur suspicion is it's an undescribed microraptorine. Hopefully more complete remains will elucidate this taxon. Compare with specimen MPZ 98/77 in, Isasmendi, E. et al. (2024). Theropod teeth palaeodiversity from the uppermost Cretaceous of the South Pyrenean Basin (NE Iberia) and the intra-Maastrichtian faunal turnover. Cretaceous Research. 162. 105952. 10.1016/j.cretres.2024.105952. and specimens LMCCE 004/62, LMCCE 005/65 in, Averianov, A. et al. (2019). Theropod teeth from the Lower Cretaceous Ilek Formation of Western Siberia, Russia. Proceedings of the Zoological Institute RAS. 323. 65-84. 10.31610/trudyzin/2019.323.2.65.- 2 comments
-
- 1
-
-
- hell creek
- hell creek formation
- (and 6 more)
-
From the album: Hell Creek Formation Microsite
Lower first molar from the hardy multituberculate, Mesodma. -
From the album: Hell Creek Formation Microsite
A complete, rooted tooth from one of the last of the hybodonts.-
- 1
-
-
- hell creek
- hell creek formation
- (and 5 more)
-
I had a few little pieces of Penn Dixie from New York matrix and was going to see if can found any micros out of it. Was wondering if anyone has broken down matrix from there and had a good ways of doing it?
-
From the album: Hell Creek Formation Microsite
A remarkably well-preserved pea clam (for this site). Usually they're broken and sand grains are embedded in the shell surface.-
- 1
-
-
- hell creek
- hell creek formation
- (and 4 more)
-
From the album: Hell Creek Formation Microsite
A rooted metatherian mammal tooth in the original matrix, next to a fragment of (fish?) bone.- 1 comment
-
- 3
-
-
- hell creek
- hell creek formation
- (and 4 more)
-
From the album: Hell Creek Formation Microsite
Preserved in the cavity of a unionoid mussel shell was another pair of mollusks - a gastropod (snail) and pea clam (Sphaerium). -
Hello, I have this amber which vaguely looks like it has a inclusion of a young mantis. Its in Burmese (Myanmarese) amber, 99 mio years old. can anybody tell me what this insect actually is? Thanks in advance.
-
From the album: Hell Creek Formation Microsite
An ancient (extinct) mammal molar, about 2 mm in length.-
- 1
-
-
- cretaceous mammal
- hell creek
- (and 5 more)
-
From the album: Eagle Ford Group
-
From the album: Eagle Ford Group
-
This came from a very barren site in far southwestern Jack County, Texas. I screened about a liter of bulk shale and only found 11 fossils total left in an 80 mesh screen! Macro fossils were about the same, a couple of crinoid stems and a few brachiopods from over 3 hours looking. The micros also included one uncertain coiled mollusk, 2 tiny brachiopods, one pinate bryozoan, 3 holothuroid spiciles, a small high-spired gastropod and a crinoid stem section. Scale is mm.
- 2 replies
-
- 3
-
-
- Jack County Texas
- microfossil
- (and 1 more)
-
From the album: Hell Creek Formation Microsite
A dinosaurian eggshell. Sand grains have lodged in most of the pores. The inner surface isn’t as interesting or distinctive, so I didn’t include it in the graphic. -
.thumb.jpg.800417caf175c525b13bb96105b08086.jpg)
Donoho Creek (Late Cretaceous) Microfossils from South Carolina
Sonickmonx posted a topic in Micro-paleontology
Hi all. I have slowly been working on sorting through a few gallons of micro matrix from a partiularly rich lag deposit within the Donoho Creek formation in South Carolina. I have been able to identify many of them, and I will share some nice ones that I have identified, however I also will be seeking help from time to time in identifying ones that I am not having as much luck identifying in hopes the community can help! Let's get started shall we? This is one of my personal favorites - a Borodinopristis Schwimmeri (sawfish) oral tooth. They are extremely rare down here, and I just recently found my first one. ~2mm. This is another one of my personal favorites - a Lonchidion Babulskii oral tooth. This is a particularly impressive specimen due to the preservation of the porous and fragile root, along with no wear on the crown. ~5mm. Here's a particularly enigmatic object for me thus far - I have been told this is a carpet shark, however i am unsure even to what genus - would anyone have any suggestions? No carpet sharks are mentioned in published literature (as far as I am aware) from this deposit. It is ~2mm in size. The most fun section - denticles. I have found tons of fascinating and differing denticles and am interested to see if anyone can help me assign these to anything specific. They're all very small, ~2mm 1. 2. 3. 4. 5. Hope you all enjoyed seeing some of the microfossils I am finding, and hopefully some of you are able to help in identifying some of them! I'll update this thread as I find more enigmatic micros.
- 2 replies
-
- 7
-
-
- cretaceous
- donoho creek formation
- (and 2 more)
-
From the album: Donoho Creek Microfossils (South Carolina)
This is by far the smallest squalicorax tooth I have found so far. It is ~2mm x 2mm, hence the designation as a juvenile.-
- 1
-
-
- cretaceous
- donoho creek formation
- (and 4 more)
-
From the album: Donoho Creek Microfossils (South Carolina)
This is a particularly striking and unique denticle of some kind. It is twisted on both the root and the crown, and I do not currently know what it is from. -
From the album: Donoho Creek Microfossils (South Carolina)
This is from an, as of currently, unknown to me type of carpet shark. This is the only specimen I have found of this type and I am very unfamiliar with carpet sharks as a whole.-
- 1
-
-
- carpet shark
- carpet shark tooth
- (and 4 more)
-
From the album: Donoho Creek Microfossils (South Carolina)
This is a tooth from the shark Eostriatolamia holmedlensis. This is a small tooth compared to most, but it is in excellent condition. -
From the album: Donoho Creek Microfossils (South Carolina)
This is a tooth from the hybodont Lonchidion Babulskii. This is a particularly remarkable specimen as the porous and fragile root is still intact.-
- 2
-
-
- cretaceous
- donoho creek formation
- (and 4 more)
-
From the album: Donoho Creek Microfossils (South Carolina)
This rostral spine is from the sawfish Ptychotrygon. This sawfish didn't have any large rostral spines, only micro ones. -
From the album: Donoho Creek Microfossils (South Carolina)
This is an oral tooth from Borodinopristis Schwimmeri, a very rare sawfish from this deposit.-
- 1
-
-
- cretaceous
- donoho creek formation
- (and 4 more)
-
From the album: Hell Creek Formation Microsite
These large lizards are kin to modern monitors like the Komodo dragon. The possess sharp, finely serrated teeth and long claws good for climbing and digging. They likely preyed on smaller animals like other lizards and mammals, and may have been the bane of parent dinosaurs as some paleontologists have suggested they could raid dinosaur nests. Varanoid “monitor lizard” fossils. A) trunk vertebra, missing a good portion of the process; B) tooth showing basal cross section silhouette and closeup of serrations. -
From the album: Hell Creek Formation Microsite
I found a few holostean-grade scales that haven’t been attributed to more precise taxa, and are referred to as holostean “A” and “B” in the literature. These are not gar and are something else.-
- 1
-
-
- cretaceous
- fish
- (and 8 more)
-
From the album: Hell Creek Formation Microsite
Lonchidion was one of the last of the hybodonts, a lineage of shark-like fishes spanning nearly 300 million years before they went extinct along with the non-avian dinosaurs. Lonchidion had barbed spines on their dorsal fins and a durophagous dentition more suited to grinding than grasping. Like most hybodont teeth, their roots are fragile and their teeth are only rarely found complete. In this deposit they seem to be fairly rare; I’ve thus far only found two.
.thumb.jpg.800417caf175c525b13bb96105b08086.jpg)
