Showing posts with label United States. Show all posts
Showing posts with label United States. Show all posts

Tuesday, November 13, 2012

Georg Wilhelm Steller

As of tomorrow, a man named Georg Wilhelm Steller passed away 266 years ago.  Steller, as we talked about a few weeks ago, discovered a few very interesting animals, and was the first non-native (at least that we know of) to set foot in Alaska, in 1741.  He was therefore the first European naturalist to discover, as well as describe, a number of animals in the area.

Many of the members of the crew of the boat that he was on were coming down with scurvy, and Steller attempted to cull the growing epidemic by feeding berries and leaves to the crew.  No one really heeded his advice, which was why, on the returning journey, they all became shipwrecked, as only 12 crew members were actually able to physically move.  During the voyage almost half of the crew had died due to scurvy, and many, including the captain, died following the shipwreck.  With very little food and water, the survivors created a camp, suffering frequent raids by the arctic fox, which only served to increase their peril.

Nevertheless, Steller, apparently the stoic type, continued to learn more about the natural world of Alaska.  He recorded a good deal of information in regards to the Steller's sea cow (a relative of the manatee), which, as a species, only survived about 25 years after Steller first discovered them.  Other animals that he discovered, described, or both include the Steller's eider (a type of duck), the spectacled cormorant (like the sea cow, now extinct), the sea otter, Steller's sea lion, and the northern fur seal.

In 1742, the survivors were eventually able to build a new boat from the salvage, and returned to Avacha Bay in Russia.  Steller continued to explore the Kamchatka Peninsula in Russia for the next two years, but died in 1746 in transit to St. Petersburg.

One final thing that I find interesting about Steller has to do with the post-mortem publication of his journals.  They were published by the German zoologist and biologist Peter Simon Pallas who, you guessed it, is the namesake of the Pallas cat, or Pallas's cat, who was the first person to describe the animal in 1776.  These journals proved to be useful to other explorers of the same region such as Captain Cook.
An excellent picture that I took of the Pallas cat (if I do say so myself) from the Cheyenne Mountain Zoo

Wednesday, November 7, 2012

Eine Kleine Nachtfuchs: A Little Night Fox

So once again, Primos was successful in her endeavors last night, and we were rewarded with more than two minutes of fox footage!  I set the camera to the video setting, and it recorded the resident red fox enjoying some nibbles, a bit of bait that I had left out for it!  Don't worry, I'm not going to just start posting things at Primos every single day, but the novelty and excitement of it hasn't quite worn off yet, and hopefully it won't for awhile!  Anyways, here is the link to the video!  Enjoy!

Some Foxy Business

Sunday, October 21, 2012

Antlers Vs. Horns, Part 2: Horns

A horn, unlike an antler, is attached to an animal.  It consists of a bony core, a projection of the bone of an animal, and is covered by a layer of keratin (your fingernails are composed of keratin).  Also unlike an antler, that falls off easily and annually, a horn, if it is broken off, will never grow back the same way.  That is why poachers have to kill rhinos (who have horns) to actually take their horns, as opposed to just letting them fall off.

Many different types of animals have horns.  Let's take a look at a few of these creatures.

The members of the family "Giraffidae," which includes the giraffe and the okapi, both have horn-like things on their heads, called "ossicones."

The members of the family "Rhinocerotidae," or the rhinos, have horns that are composed solely of keratin, and do not have the bone core typical of many horns.  The horns of the rhinos also grow continuously.

Some of the members of the family "Chamaeleonidae," or the chameleons, often have horns projecting out of their skulls, which are covered in a layer of keratin.

And, of course, the members of the family "Ceratopsidae," a group of marginocephalian dinosaurs, have horns projecting out of their skulls. 
Below is a short list of some of the more famous Ceratopsian dinosaurs.

Famous examples of Ceratopsian Dinosaurs (or "Ceratopsians That I Have Heard Of):
    1. Triceratops - (Colorado, Montana, and Wyoming, U.S.; Alberta and Saskatchewan, Canada)
    2. Arrhincoceratops - (Alberta, Canada)
    3. Torosaurus - (Montana, North Dakota, South Dakota, Utah, and Wyoming, U.S.; Saskatchewan, Canada)
    4. Monoclonius - (Montana, U.S.; Alberta, Canada)
    5. Chasmosaurus - (Alberta, Canada)
    6. Centrosaurus - (Alberta, Canada)
    7. Styracosaurus - (Montana, U.S.; Alberta, Canada)
    8. Achelousaurus - (Montana, U.S.)
    9. Pentaceratops - (New Mexico, U.S.)
    10. Vagaceratops - (Alberta, Canada)
    11. Diabloceratops - (Utah, U.S.)
    12. Albertaceratops - (Montana, U.S.; Alberta, Canada)
    13. Einiosaurus - (Montana, U.S.)
    14. Anchiceratops - (Alberta, Canada)
    15. Mojoceratops - (Alberta and Saskatchewan, Canada)
    16. Pachyrhinosaurus - (Alaska, U.S.; Alberta, Canada)
    17. Kosmoceratops - (Utah, U.S.)
    18. Medusaceratops (Montana, U.S.)
    19. Utahceratops - (Utah, U.S.)
Keep in mind that the tusks seen in elephants, mammoths, walruses, and hippos, despite being superficially similar to horns, are actually greatly enlarged teeth!

Thursday, October 18, 2012

Introducing....the Primos Truth Cam; The Ostriches of Longmont, Colorado; And Engagement Congratulations!

The most recent addition to my proverbial arsenal is the Primos Truth Cam!  (For those of you who are wondering, my arsenal includes my camera, Denali; my backpack, Rocky; my First Aid kit, Reginauld; and my rock hammer.  You don't name your rock hammer.)  Equipped with both video and photo capabilities for both day and night, I have set it up in a place where I know there to be red foxes!  I can't promise anything of course, but I have sprinkled an alluring amount of fox urine near the cam, so, with any luck, tonight we will be successful in our endeavors!  I will let ya'll know what happens tomorrow!

Speaking of names, I would be much obliged if you all could help me think of a fantastic name for my camera!  THANKS.

Another pretty exciting event occurred yesterday!  During our first period Anthropology class (a hoot and a half, fyi), I was talking to my group members about the time that my father and I were driving down Broadway, in between Boulder and Superior.  Off to the right was a lot of farmland, and, at one point, I was almost positive that I had seen kangaroos!  I told my dad to turn back, and, once we got home (which was pretty much the very first place that we could turn around), we turned around, and we were back within five minutes.  I couldn't remember exactly where I had thought that I had seen them, but (unsurprisingly) there were no kangaroos.  To this day, every time we drive by that area, both my dad and I turn to look.  To this day, we have not seen the phantom kangaroos.

Anyways, I was telling my Anthro friends about this event, and one of them, a friend of mine named Grace Albers, said that she had seen ostriches in Longmont, not twenty minutes from my house!  Incredibly excited, I told another friend of mine, Claire Chen, about it, and we headed over there during the next class period.  (Don't you worry, I wasn't ditching, but our school has Wednesday and Thursday block, where we only have half of our classes, but they are each twice as long.)  AND GUESS WHAT WE SAW.

OSTRICHES.
OSTRICHES

THAT'S RIGHT.
THAT'S RIGHT. 
 OSTRICHES.
OSTRICHES

WHAT THE HECK.  Apparently there is an animal hospital thing, and at the place they have two ostriches!  Crazy, huh!
An OSTRICH  preening!

And finally, I would like to congratulate my cousin, Alexa Neher, on getting engaged to her boyfriend Christopher Koreerat!  Congratulations, you two!

Thursday, October 11, 2012

The Denver Gem and Mineral Show Part 2: The Piscivores (Excepting Penguins)

As we started talking about a few weeks ago, my friend Masaki Kleinkopf and I were able to visit the Denver Gem and Mineral Show at the Denver Merchandise Mart.  Last time, we talked about the giant ammonites, the baby eryops that Dr. Robert Bakker was working on, the gliding Indonesian lizards of the genus Draco and the pterosaurs that evolved from creatures purportedly much like this millions of years ago.  Today, we are going to talk about all of the piscivorous animals that we saw there, except for the fossil penguin that I saw there.  Knowing me, that would easily take up one whole post of its own there.  Keep in mind throughout this post that I'm not certain for all of these animals that they actually eat fish, I just know that the large groups that they belong to often eat fish.  Today, we are going to be looking at the mosasaurs, crocodilians, pterosaurs, sea lions, other fish, sharks, and the dreaded piscivorous dinosaur Spinosaurus.  

MESSAGE FROM ZACK FROM THE FUTURE:  Hello, everyone.  This is Zack Neher.  I have travelled to this post from the future.  I wanted to give you a link to the Homebase for these posts.  I am like Rose Tyler, leaving clues in the form of Bad Wolf.  Except this is not quite like that at all really.  Anyways.  The Homebase for the series is HERE.
Myself next to a gigantic mosasaur skull
I am pretty sure that this is the skull of a mosasaur , anyway.....it looks more like a mosasaur skull than the skull of a crocodilian, if you ask me
A mosasaur jaw, from Morocco by the looks of it
A mosasaur skull (Platecarpus, if memory serves, but it is entirely possible that I am wildly off) in front of a fossil ray
Another huge mosasaur skull
We also got to see the teeth of a piscivorous pterosaur.  The teeth of a piscivore are usually different from those of other carnivorous animals due to their conical shape.  The teeth of the fish eaters, like those of crocodilians and dolphins, are usually conical in shape, to prevent prey from struggling out of their grasp.
The teeth of a piscivorous pterosaurs
Below are the skulls of various crocodilians.
 
 
The skulls of these dudes seem like they should be out of a cartoon or something, they are so weird and comic looking!
Here are a pair of photos of fossilized sea lion teeth, both from the extinct sea lion Imagotaria sp., from the Miocene to Pliocene in the Atacama region of Chile.
Imagotaria sp., from the Miocene to Pliocene in the Atacama region of Chile
Imagotaria sp., from the Miocene to Pliocene in the Atacama region of Chile
Next, a picture of a pair of fossil jellyfish!
Fossil jellyfish!
Next are the teeth of the gigantic, fifty to sixty foot long carnivorous (or actually, piscivorous) dinosaur: Spinosaurus.  Also in the picture are the teeth of another enormous carnivorous dinosaur that lived in the same area of Northern Africa as Spinosaurus at this time of the Cretaceous Period: Carcharodontosaurus, who was not a piscivore, at least not primarily a piscivore, like a penguin, or as Spinosaurus is purported to
be.  (Did you see that alliteration?  My language arts teacher would be most impressed).  I discuss both Spinosaurus and Carcharodontosaurus in two previous posts, which you can look at HERE FOR SPINOSAURUS and HERE FOR SPINOSAURUS AND CARCHARODONTOSAURUS.
The teeth of Spinosaurus.  Actually in this shot, it looks as if most or all of these teeth belong to Spinosaurus.
And now for some pictures of the teeth of Megalodon, the largest shark that is ever known to have lived!  I have talked about Megalodon in the past, click HERE to learn more.

 


Now for some random ones.
It's a fish eat fish world out there
A pair of shark jaws.  I am not certain as I don't remember at all and they are unlabeled, but I believe them to be jaws of sand tiger sharks.  Again, I could be totally off on this!

Thursday, September 20, 2012

The Denver Gem and Mineral Show Part 1: Giant Ammonites, Burrowing Amphibians and Leaping Lizards

On Sunday, the 16th, my friend Masaki Kleinkopf and I visited the Denver Gem and Mineral Show at the Denver Merchandise Mart.  It was a ton of fun!  They had booths from all over the place, like the Morrison Natural History Museum and the Rocky Mountain Dinosaur Resource Center, an excellent dinosaur museum up in Woodland Park near Colorado Springs!  One of the most exciting things by far was when a pair of women came up to us, and asked if they could film us just going about our business.  They were part of a group making a movie under the working title "Quarry."  It's apparently going to be about American Paleontology, and it looks like Masaki and I may have made the part about why Americans love paleontology, and especially dinosaurs, so much!

MESSAGE FROM ZACK FROM THE FUTURE:  Hello, everyone.  This is Zack Neher.  I have travelled to this post from the future.  I wanted to give you a link to the Homebase for these posts.  I am like Rose Tyler, leaving clues in the form of Bad Wolf.  Except this is not quite like that at all really.  Anyways.  The Homebase for the series is HERE.
Creeper shot of the film crew following us, with a large iridescent ammonite in the foreground.  Notice the distinct chambers.  How magnificent.

We also saw Dr. Robert Bakker there.  After I said hello, he waved me over and said "You're a smart kid.  Can you tell me where the nostrils are on this thing?"  The "thing" that he was referring to was a baby Eryops skeleton that he has been working on, a Permian amphibian that lived in the south eastern United States.  Remains have been discovered in both Texas and New Mexico, and it was a contemporary of Dimetrodon, who most likely preyed upon it.  Upon my examination, I promptly tried to prove his assessment of my intelligence wrong, as I pointed all over the skull in my attempts to locate the nostrils.  Turns out, the nostrils were right where they should be.  They were just confusing because in life, the animal would have been able to cover the nostrils with little flaps of bone, sealing off the nostrils from dirt and such while it was burrowing.  Pretty interesting stuff!
Dr. Bakker's baby Eryops.  The snout is facing the pen in the left of the image, and the two holes that you can see are the orbitals, or the eye sockets.  The googly eyes are explained below.
Another picture from a few weeks ago.  This was taken at the Morrison Museum when my friend Kristie Chua came up to visit.  Dr. Bakker, when asked "Why the googly eyes?"  replied "I put the googly eyes on because I like it." 

We also saw a number of giant ammonites.  Below are a few pictures of the better ones, probably the largest I have ever seen!  The only other possible contender that I can think of was one that I saw at the Heritage Museum of the Texas Hill Country in (you guessed it!) Texas.  That one was a huge, probably five or six feet wide, imprint of an ammonite, right outside the entrance to the museum.  This was the same place that I have talked about before, in my Acrocanthosaurus on the Prowl post.  Great place!  I definitely recommend checking it out if you are ever in the Canyon Lake/San Antonio area of Texas!
The Heritage Museum ammonite.  Perhaps my memory is a bit off.  But I still remember it being incredibly, enormously large.  Perhaps the picture makes it looks smaller?  A mystery.  I suppose I will have to check it next time we go back there now won't I.
The ammonites, in order of amazingness.  Probably about a two, two and a half foot diameter.
Although its size was less impressive, perhaps only a foot or two wide at the most, it was most amazingly iridescent.  There were a large number of them here, but somehow I succeeded in capturing zero great pictures.  Go figure. 
Same story as above.  Not as impressive in size, but amazing in preservation quality.  Check out those septum!
Masaki next to one big ass ammonite! 
And Masaki with another big ass one!  This one a bigger ass!  Bigger ass one?  Bigger one.  A bigger one.
The third really cool thing that we saw there (that I am going to include in this post, at least) were these preserved lizards.  These lizards are from the genus Draco, and are found exclusively in Indonesia.  These lizards are remarkable as they can glide from tree to tree.  Many paleontologists and biologists speculate that this is what the earliest Pterosaurs would have looked like.  For those of you who don't know, Pterosaurs are the flying reptiles that were contemporaneous with the dinosaurs.  Often confused with the dinosaurs themselves, the Pterosaurs were distinct in that they were truly flying reptiles, and not a distinct grouping.  Calling Pterosaurs dinosaurs would be akin to calling a tiger salamander a mammal, on the sole observation that the tiger salamander is a contemporary of a squirrel.  Not so.
One specimen of the Draco lizards....
....and another!
Famous examples of Pterosaurs include (or "Pterosaurs That I Have Heard Of):

  1. Anurognathus
  2. Darwinopterus
  3. Dimorphodon
  4. Dsungaripterus
  5. Eopteranodon
  6. Eudimorphodon
  7. Hatzegopteryx
  8. Ornithocheirus
  9. Peteinosaurus
  10. Pteranodon
  11. Pterodactylus
  12. Pterodaustro
  13. Quetzalcoatlus
  14. Rhamphorhynchus
  15. Sordes
  16. Tapejara
  17. Tropeognathus
You probably also know the Pterosaurs as the "Pterodactyls."  Probably should have prefaced with that.
A skull of Darwinopterus from the show.  This guy was at the booth for the Rocky Mountain Dinosaur Resource Center, or RMDRC for short, an awesome museum up in Woodland Park.  
The wing of a good sized Pterosaur.  You can see at the bottom of the picture a white round thingy.  That's the ammonite featured in the picture with Masaki, above.  That should help give you an idea of the scale of the wing.  Probably around ten feet or so.  And get this; that whole thing is one enormously elongated pinky!
A fossil pterosaur from the show
Another fossil pterosaur from the show
Anyways, in the Imax production "Flying Monsters" with David Attenborough (FAVORITE.  IMAX.  EVER.), they talk about how many scientists speculate that these lizards of the genus Draco greatly resemble the earliest ancestors of the Pterosaurs.  Initially gliding from tree to tree to snatch flying insects in the air, eventually these small lizards would have become capable of powered flight.  Then, they would have grown larger and larger, until they became the biggest animals to ever take to the skies.  Except for humans, but really.  We don't really count.

Thursday, September 6, 2012

23 Fact Tuesdays: Ceratosaurus, Octopi, Aye-aye, and More!

Introducing:  23 Fact Tuesdays!  I'm thinking that (possibly) each week, we can look at twenty-three different groups of....things....and we can learn a fun fact about them each week!  Many of these topics feature North America, as that is where both I and most of my readers reside, but other topics include penguins, fossil horses, fossil mammals, early humans, various fish and birds, dinosaurs, and many more!
Here they are!

Don't want to read all twenty-three!  Well, in my opinion, the best ones are 10, 14, 15, 17, 18, and 19!  Enjoy!

1.  Alaskan Mammals:  The Sitka black-tailed deer will graze on beach plants like dune grass and kelp during the lean season.

2.  Alaskan Fish:  The whitefish may fast for eight or nine months during the lean season, surviving off of their stored fat.

3.  Dinosaurs:  In 1883, Ceratosaurus was the first large meat eating, or Theropod, dinosaur skeleton that was discovered more than half complete.  The first skeleton was discovered in Colorado.

4.  Dinosaurian Contemporaries:  Lagosuchus was either the direct ancestor, or a close relative of the ancestor, of the dinosaurs.

5.  North American Birds of Prey:  The robin-sized American Kestrel is not only the smallest hawk in North America, but it is also the most common.

6.  Tideland Treasures of South Carolina:  The palmetto, which is the state tree of South Carolina, can live for 75 years, and grow to a height of 60 feet, with a 1 or 2 foot diameter.

7.  North American Mammals:  The least chipmunk, besides eating the usual rodent foods like nuts, will also dine on insects, and occasionally small vertebrates.

8.  North American Hoofed and Marine Mammals:  The sperm whale is the largest of the toothed whales.

9.  North American Birds:  The common goldeneye will often take over abandoned woodpecker nests.

10.  Fossil Mammals:  Despite the fact that primates no longer live in North America, many paleontologists think that they either evolved there or in Asia.

11.  Penguins:  Despite the fact that most people think of penguins living in cold, snowy climates, the king penguin typically forms colonies in the shelter of dense tussock grass.

12.  Fossil Horses:  One species of Hypohippus, H. osborni, had weak and infrequently used side toes.  Although not very exciting sounding, this is an important step from multi-toed horse ancestors to the one-toed horses that we know today. 

13.  Dinosaurs....Again!:  Ornithomimus, one of the "ostrich-dinosaurs," lived both in the states of Colorado and Montana, but also in the country of Tibet.

14.  Extreme Abilities:  In order to protect itself from various predators and to hunt its various prey, the amazing Indo-Malayan octopus can mimic an enormous variety of different animals, including flounder, sea snakes, crinoids, jellyfish, lionfish, hermit crabs, stingrays, brittlestars, stomatopods, and sea anemones, amongst many others.

15.  Extreme Movement:  Although this dude looks like a worm or something, the caecilian is actually a close relative of newts and salamanders.  It lives strictly underground, and is rarely seen, despite the fact that they can grow up to five feet long.

16.  Extreme Growth:  The ostrich is a serious record breaker amongst birds.  Not only does it when the tallest bird and heaviest bird awards, but it also is the fastest runner, has the biggest egg, and has the largest eyes.  In fact, the smallest bird on the planet, the tiny little bee hummingbird, could easily fit inside the eye of the ostrich!

 17.  Extreme Families:  The "Biggest Nest of Any Bird" Award goes to the orange-footed megapode, or the scrubfowl.  Although these nests are just on the ground (the biggest nests in trees are built by bald eagles), they are still very, very impressive.  On average, these nests can be 11.5 feet wide and 39 feet tall!  The biggest ever recorded, however, was a whopping 164 feet wide!

18.   Remarkable Mammals:  The aye-aye, possibly one of the creepiest looking animals in the natural world, is a type of lemur whose large incisor teeth grow continuously.

19.  Remarkable Birds:  Once thought to be the missing link between reptiles and birds, the South American Hoatzin hatches out of its egg with claws on its wing greatly resembling those of the ancient Late Jurassic bird Archaeopteryx.  These wing claws are not often, and maybe even never, found on birds today, with the obvious exception of the baby Hoatzin.  As the Hoatzin grows, its wing claws disappear.  

20.  Remarkable Fish:  The electric eel can discharge fifty volts from its body.

21.  Remarkable Reptiles and Amphibians:  The Cuban tree boa will position itself in small apertures in caves, striking with deadly accuracy at bats that fly out of the cave.  Remarkably, the snake will do this in complete darkness, somehow sensing where the bats are.

22.  Prehistoric Animals:  Like Lagosuchus, Effigia is another possible relative of the dinosaurs.

23.  The Evolution of Humans:  Homo heidelbergensis is thought to have been the last common ancestor between the Neanderthals (Homo neanderthalensis) and us humans, Homo sapiens

Sunday, August 26, 2012

Birds of Prey on Marshall Road

Today, my friend Mona Kamath and I went out to find some birds of prey along a little side road off of Marshall Road between Boulder and Superior in Colorado.  We saw an abundance of them on this trip, perhaps more than on any other trip.  The only other trips that I can remember that could rival this one were one where I saw red-tailed hawks, kestrels, and turkey vultures, and another one where I saw red-tailed hawks, turkey vultures, and a golden eagle.

Today, we were rewarded with not one, but two golden eagles!  Below are some pictures taken by both me and Mona.

 
 
 
 
We also saw a number of turkey vultures circling overhead, and a pair of them perched on a fence nearby.  However, by far the most exciting vulture spot of the day was when a juvenile turkey vulture landed right behind us!  I stopped the car and Mona was able to snap a few pics.  Not quite as exciting as the time a few weeks ago when I was on this road, and saw a pair of turkey vultures and a bunch of magpies fighting over the remains of a small carcasses, maybe thirty feet from my car!  Note how similar the juvenile turkey vulture looks compared to black vulture adults.
 
I also saw a bird of prey perched upon a lamp post in the middle of Superior.  I don't know what kind it is, so if anyone can help me out with that, that would be awesome!  Anyways, here are a few pics of it:
 
 
One of my most favorite bird of prey moments on this road was perhaps a month or two ago when I saw a pair of hawks flying along calmly next to each other, and then they suddenly locked talons.  I'm not positive, but I believe that it might have been a courtship display!
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