Showing posts with label bones. Show all posts
Showing posts with label bones. Show all posts

August 3 - Bones! And More Bones!

Posted on August 3, 2021


This is an update of my post published on August 3, 2010:



On this day in 1769, a Spanish expedition encountered the La Brea Tar Pits in Los Angeles, becoming the first Europeans known to have seen them. The “tar” pits are actually pools of naturally-occurring asphalt that bubbles up from an underground oil field. Long ago water would cover the asphalt in some of the pits, and animals going down to the pools to drink would sometimes become trapped, die, and sink.

Luckily for us, the asphalt preserved the bones of these creatures!

Since the early 1900s, the bones of many different creatures have been excavated from the “tar” pits. The most dramatic are the huge mammoth skeletons...



...but there are also sabertooth cats, ground sloths, bison, camels, horses, elk, deer, peccaries, pronghorns, bears, “big cats,” dire wolves, raccoons, skunks, and many other animals. Of course there are also small animals and microfossils.



Above and below: some of the dire wolf skulls that have
been excavated from the tar pits.


Only one human skeleton has ever been found. It belonged to a woman who lived about nine thousand years ago and who was probably murdered by a blow to her head.


On this day in 1908, a nearly complete skeleton of a Neanderthal man was discovered in a cave in France. (The cave was in La Chapelle-aux-Saints, France.) Two brothers, Amedee and Jean Bouyssonie, made the discovery. The skeleton they found is called the “Old Man” because that particular Neanderthal lived to be very old, at least by the standards of his time. (It was hard for me to find and confirm how old this Neanderthal man was when he died, but, according to a few sources, this old, old man was 50 years old when he died. In other words, younger than yours truly!)



Most sources, when searched for how old the “Old Man” specimen is, come back with 50 to 60 THOUSAND years old! Now that's an old man! 

(Neanderthals lived from 130,000 years ago to 30,000 years ago.)


The “Old Man” was the first relatively complete Neanderthal skeleton that scientists had access to. A paleontologist named Marcellin Boule studied the specimen and did a reconstruction showing Neanderthals as standing in a somewhat-crouching position and moving in a stooped, shuffling, “brutish” way. Scientists no longer accept this analysis and now portray Neanderthals as much more upright and much more like modern humans.



Our ideas of Neanderthals have evolved over the years...



There are apparently two reasons for Boule's mistaken ideas. First, the “Old Man” suffered from a degenerative disease and therefore was more stooped and crouched-over than young, healthy Neanderthals. Second, Boule probably expected and even wanted to discover a brutish creature, and so he interpreted the skeleton with those expectations in mind.


Investigate the La Brea Tar Pits and La Chapelle-aux-Saints.

It's still happening!

My relatives live near the La Brea Tar Pits, and I often see the large pool, now fenced off for our safety, complete with heart-rending statues of a mammoth family divided because one of the creatures is trapped in the asphalt. (These statues used to upset me so much when I was a kid!)



Several other pits are also fenced off or otherwise protected from random passers-by, including a pit that is currently being excavated by volunteers under the supervision of paleontologists. There are exhibits and windows associated with some of the pits.



It's all very interesting.

But what's really weird is that, when we walk along the paths or in the grass near the various museums and exhibits, we sometimes see tiny new pools of asphalt and oil and methane bubbling up out of the lawn. Aaaa!



I imagine very small creatures and insects are still getting trapped in these tiny new pools!

Check out...



August 3 – Anniversary of the "Discovery" of the La Brea Tar Pits

Posted on August 3, 2014

Lovely green grass... a boulder here or there, half submerged in the earth... a patch of weeds over here, a patch of bare dirt over there, a patch of—

Wait!! What is THAT?

It's black. It's sticky–yicky, oozy–squoozy. It's even bubbly!

It's tar!

My sister used to live just a block away from the La Brea Tar Pits, in Los Angeles, California. And not all of the tar is safely fenced off from us modern humans walking around Hancock Park. As we walked along, we often saw sticky patches of fresh tar bubbling up here and there!

It was quite...unnerving!

You know that there is petroleum, or oil, underneath the ground in some places, right? Well, that is the case in some areas of Los Angeles. Some crude oil has been seeping up to the Earth's surface through cracks in the crust; once exposed to the air and sun, some of the lighter components of the oil has been evaporating away. The denser part that is left behind is called natural asphalt, or tar.

The pools of tar have been growing (and sometimes shrinking) over tens of thousands of years. And over the years, the pools have been accumulating a dusting of dust and dirt and a partially covering of leaves and other natural debris. And over those thousands of years, many animals have stumbled into the pits, where they found themselves stuck. Naturally, some predators that saw the stuck animals decided to get an easy dinner—but then they also got stuck!

On this date in 1769, a Spanish friar named Juan Crespi noticed and wrote about the pools of tar—and he is the first person we know saw them. (Obviously, many native Americans must have seen the tar pools at one point or another—but we don't have records that tell us who or when. That is why Crespi gets the label “discoverer,” when really he was probably the first European person—not the first person—to discover the tar pools!)


Did you know...?

  • La Brea means “the tar” in Spanish. So the name The La Brea Tar Pits translates to “The The Tar Tar Pits.”
  • The tar not only killed a lot of animals, it preserved their bones as fossils. At the La Brea Tar Pits there is a museum in which many of the more than 1,000,000 fossils found in the pits are displayed. The species found include more than 150 species (kinds) of plants and more than 460 species of animals.
  • Only one human skeleton has ever been found in the La Brea Tar Pits—a woman who lived and died around ten thousand years ago. There is evidence that suggests that she was deliberately submerged in the tar pit only after she died. In other words, the tar didn't kill her; instead, she was buried in one of the pools.
  • Jose Longinos Martinez wrote in 1792: “Near the Pueblo de Los Angeles there are more than twenty springs of liquid petroleum, pitch, etc. Farther to the west of said town . . . there is a great lake of pitch, with many pools in which bubbles or blisters are constantly forming and exploding. They are shaped like conical bells and, when they burst at their apex, they make a little report.”
    (In this case, report means an explosive sound.)
  • There have been more than 60 tar pits excavated by scientists, although only about 12 were found to hold a lot of fossils.
  • There have been no dinosaur bones discovered in the tar pits. The dinosaurs died out millions and millions of years before the pools of tar formed.
  • The bones found in the tar pits include mammoths, dire wolves, short-faced bears, saber-toothed cats, and giant sloths.


Also on this date:

























Anniversary of the first watercraft to reach the North Pole






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August 3, 2010

Bones, Bones, and More Bones” Day


On this day in 1769, a Spanish expedition encountered the La Brea Tar Pits in Los Angeles, becoming the first Europeans known to have seen them. The “tar” pits are actually pools of naturally-occurring asphalt that bubbles up from an underground oil field. Long ago water would cover the asphalt in some of the pits, and animals going down to the pools to drink would sometimes become trapped, die, and sink.


Luckily for us, the asphalt preserved the bones of these creatures!


Since the early 1900s, the bones of many different creatures have been excavated from the “tar” pits. The most dramatic are the huge mammoth skeletons, but there are also sabertooth cats, ground sloths, bison, camels, horses, elk, deer, peccaries, pronghorns, bears, “big cats,” dire wolves, raccoons, skunks, and many other animals. Of course there are also small animals and microfossils.

(At right are just some of the dire wolf skulls that have been pulled from the pit.)


Only one human skeleton has ever been found. It belonged to a woman who lived about nine thousand years ago and who was probably murdered by a blow to her head.


On this day in 1908, a nearly complete skeleton of a Neanderthal man was discovered in a cave in France. (The cave was in La Chapelle-aux-Saints, France.) Two brothers, Amedee and Jean Bouyssonie, made the discovery. The skeleton they found is called the “Old Man” because that particular Neanderthal lived to be very old, at least by the standards of his time. (It was hard for me to find and confirm how old this Neanderthal man was when he died, but, according to a few sources, this old, old man was 50 years old when he died. In other words, younger than yours truly!)



Most sources, when searched for how old the “Old Man” specimen is, come back with 50 to 60 THOUSAND years old! Now that's an old man! (Neanderthals lived from 130,000 years ago to 30,000 years ago.)



The “Old Man” was the first relatively complete Neanderthal skeleton that scientists had access to. A paleontologist named Marcellin Boule studied the specimen and did a reconstruction showing Neanderthals as standing in a somewhat-crouching position and moving in a stooped, shuffling, “brutish” way. Scientists no longer accept this analysis and now portray Neanderthals as much more upright and much more like modern humans.


There are apparently two reasons for Boule's mistaken ideas. First, the “Old Man” suffered from a degenerative disease and therefore was more stooped and crouched-over than young, healthy Neanderthals. Second, Boule probably expected and even wanted to discover a brutish creature, and so he interpreted the skeleton with those expectations in mind.


Investigate the La Brea Tar Pits and La Chapelle-aux-Saints.


It's still happening!

My sister lives near the La Brea Tar Pits, and I often see the large pool, now fenced off for our safety, complete with heart-rending statues of a mammoth family divided because one of the creatures is trapped in the asphalt. (These statues used to upset me so much when I was a kid!) Several other pits are also fenced off or otherwise protected from random passers-by, including a pit that is currently being excavated by volunteers under the supervision of paleontologists. There are exhibits and windows associated with some of the pits.

It's all very interesting.

But what's really weird is that, when we walk along the paths or in the grass near the various museums and exhibits, we sometimes see tiny new pools of asphalt and oil and methane bubbling up out of the lawn. Aaaa!

I imagine very small creatures and insects are still getting trapped in these tiny new pools!


Check out...