Posts treating: "cretaceous"
Saturday, 22 July 2023
Tylocidaris clavigera (Mantell, 1822) cast of a sea urchin fossil found in
the Coniacian of the White Chalk subgroup in England. The creature existed in the Cretaceous Period (Late Turonian to Santonian). Cast is on
display at the Smithsonian National Museum of Natural History as of June 2023.
The genus was named by Pomel in 1883.
I photographed this same specimen in 2010 and posted about it. It is interesting how camera technology as changed. My cell phone picture taken in 2023 is far [...]
This fossil was displayed on August 2022, at the Harvard Museum of Natural History in Cambridge, Massachusetts, USA. This dinosaur limb bone belonged to a herbivore ornithopod Tenontosaurus tilletti (Ostrom, 1970). This specimen was found in the Cloverly Formation at Montana USA. It dates to the Middle Cretaceous Period.
Here are some more pictures of Diplomystus brevissimus (Blainville, 1818) fish fossils. The fish lived during the Cretaceous Period (about 150 million years ago) in what is now Beirut, Lebanon. They were bought by A.E. Day in 1902 and are now on display at the Harvard Museum of the Ancient Near East as of August 2022.
See this link for images from yesterday's posting.
Here are some pictures of Diplomystus brevissimus (Blainville, 1818) fish fossils. The fish lived during the Cretaceous Period (about 150 million years ago) in what is now Beirut, Lebanon. They were bought by A.E. Day in 1902 and are now on display at the Harvard Museum of the Ancient Near East as of August 2022. Fossil is also known as Armigatus brevissimus (Blainville, 1818). Species name in Latin means "smallest or shortest".
This cutie is a Triceratops. The name means three-horned face in Greek but they might have been named Little Hooves instead as a nod to their weight-bearing fingers and toes that ended in sweet little hooves. Three of their five fingers and all of their toes end in a broad, flat-shaped hoof bone with a horny covering. Their hooves helped to protect their toes from wear and tear and support
Just wanted to share this abstract of a paper detailing an outcrop from Baja California, Mexico, which preserves heterogeneous deposits resulting from the Chicxulub meteorite impact 66 million years ago. We report K-Pg-age deposits in Baja California, Mexico, consisting of terrestrial and shallow marine materials re-sedimented onto the continental slope, including corals, gastropods,
Well, not quite all the way down. Still, mammals and their immediate ancestors have been in the vertebrate mix for a very, very long time. Fossils of true mammals date back to the Triassic Period (252-201 million years ago). True dinosaurs make their appearance at the same time. I suspect the roots of the mammalian public relations problem lies in that coincident arrival of mammals and dinosaurs on the scene. What’s the PR issue that mammals face? In particular in the Mesozoic [...]
An adorable example of Keuppia levante (Fuchs, Bracchi & Weis, 2009), an extinct genus of octopus that swam our ancient seas back in the Cretaceous. The dark black and brown area you see here is his ink sac which has been preserved for a remarkable 95 million years.This cutie is in the family Palaeoctopodidae, and one of the earliest representatives of the order Octopoda. These ancient
The fossil for today's posting is Tennessee's state fossil. This gastropod mollusk fossil is called Drilluta communis (Wade, 1916). It existed in the Cretaceous Period (144-65 million years ago). The fossil was found in the Tennessee USA.
The fossil was on display in the Evolving Planet section of The Field Museum of Natural History in Chicago Illinois, USA as of August 2020. Accession number is UC37952.
The genus named by Bruce Wade in 1916.
Further reading:
U.S. Geological Survey [...]
The term 'niche' can very simply mean an ecologic space which a particular type of organism exploits. Scientists are a pedantic lot though. They need more rigorous definitions to work with. This has spawned many different ideas about what a niche means and how it can best be described and measured. There is the environmental niche concept which focuses on the physical and chemical attributes
A rare and very beautifully preserved Cretaceous Hadrosaur Tooth. This lovely specimen is from one of our beloved herbivorous "Duck-Billed" dinosaurs from 68 million-year-old outcrops near Drumheller, Alberta, Canada, and is likely from an Edmontosaurus.When you scour the badlands of southern Alberta, most of the dinosaur material you'll find are from hadrosaurs. These lovely tree-less
Recently, I obtained an ultraviolet (UV) LED flashlight set at 365 nm wavelength. This light is shortwave UV and in the past this type of light was quite expensive. I have a Mineralight Model SL 2537 which is over 50 years old. The replacement bulb for it is over $100. The LED light I found on Amazon.com was under $40. I was somewhat skeptical it would produce shortwave UV. It worked and I
A new study on the synchronicity of igneous activity and the Late Triassic mass extinction which occurred around 201.5 million years ago.
Large-scale sill emplacement in Brazil as a trigger for the end-Triassic crisis- Thea H. Heimdal, Henrik. H. Svensen, Jahandar Ramezani, Karthik Iyer, Egberto Pereira, René Rodrigues, Morgan T. Jones & Sara Callegaro. The article is open access.
Nobody told me there’d be days like these.
Strange days, indeed.
Most peculiar, momma.
~ lyrics from Nobody Told Me,
composed by John Lennon and Yoko Ono
I’d been thinking about time even before I came under a stay-at-home order, and before jokes like the following about quarantine time flashed across the web:
I’ve eaten 14 meals and taken 6 naps and it’s still today. Are you kidding me?
2020 is a unique Leap Year. It has 29 days in February, 300 days in March, and 5 years [...]
Trent River, Photo: Betty Franklin
Dan Bowen, Chair of the Vancouver Island Palaeontological Society has led many fossil field trips along the Trent River. The photo you see here was taken by the deeply awesome Betty Franklin on one of those trips.
The rocks that make up this riverbed today were laid down south of the equator as small, tropical islands. They rode across the Pacific
Echinoids are cool critters that come in two basic flavors, regular and irregular. The regular echioids are the ones you see in aquariums and on nature shows with the long spines crawling along the bottom of the reef. Irregular echinoids are more often partially submerged in the sediment and do not have large showy spines. Hardouinia kellumi is an example of an irregular urchin and could also be known as a sea biscuit. The specimen below is from the Cretaceous ages sediments at Rocky [...]
This image is of an Inoceramus pictus (Sowerby) pelecypod fossil. It was found in St. Parres (Yonne), France. The fossil dates to the Late Creteous Period (Cenomanian). It was displayed at Muséum National D'Historie Naturelle Jardin Des Plantes Paléontologie et Anatomie Comparée, Paris, France. Image taken August
This picture is of a very special fossil called Scipionyx samniticus. It was found in the Le Cavere quarry at the edge of the village of Pietraroja, Italy. The theropod dinosaur would have lived in the Early Cretaceous Period (113 million years ago).
It was found by an amateur collector in 1981, by Italian law the find belonged to the state. The specimen was turned over to a museum in
This image is of a sea urchin fossil called Echinocorys. The shell once consisted of calcite but has since been replaced by crystalline silica. This animal lived in the Cretaceous Period. The fossil was found at Sidmouth, Devon, England.
This specimen was on display August 2016 in Natural History Museum of London,
Here is an image of a Protoceratops andrewsi dinosaur egg fossil. It was found in Mongolia. The dinosaur would have existed in the Cretaceous Period. Fossil was on display at The
Museo Civico di Storia Naturale di Milano (Milan Natural History
Museum), Italy as of August
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