Popular thought surrounding Edmontosaurus?

Pop culture has been kinder to some dinosaurs than others. Edmontosaurus, unfortunately, doesn't have much that helps it stand out. It has that duck bill, sure, but it doesn't have an astounding crest, horns, giant claws, fearsome teeth, or a tail that looks more like a whip. It is the equivalent of a giant prehistoric cow. How can the general public get excited about a cow? The answer is that it doesn't, not really. There are not mounds of documentaries starring Edmontosaurus, though Jurassic Fight Club features one prominently but they don't make much of a stir otherwise in that world. They don't feature in any movies really either. There are toys and books that mention them however. Sometimes toys aren't 100% accurate, but who can complain about this guy:

The discoveries and namings of Edmontosaurus.

Oh more bone wars stories on discovery day! The first described remains that may belong to Edmontosaurus were named Trachodon atavus in 1871 by E D Cope. The first well-supported species of Edmontosaurus was named in 1892 as Claosaurus annectens by O C Marsh, collected in 1891 by John Bell Hatcher from the late Maastrichtian-age Upper Cretaceous Lance Formation of Niobrara County Wyoming. Since that time Trachodon and Claosaurus have been renamed. The name Edmontosaurus itself comes to us from Lawrence Lambe (the guy they named Lambeosaurus after) while finding skeletons and skulls in Alberta, Canada in 1917.

Lawrence Morris Lambe (1863-1919)

Another version of evidence and an article.

Edmontosaurs is mentioned in a number of articles. I found one good one. First, though, I thought I'd keep up the Anatotitan/Edmontosaurs debate. In the book I'm reading, The Dinosauria, there is a page in the Hadrosaur section that has a skull from E. saskatchewanensis and A. copei one above the other, respectively. It makes for a much better comparison than my previous graphic. However, the species shown before was E. annectens, not E. saskatchewanensis. This may cause alarm or a call that they are not the same, but the skull of E. annectens is very much like E. saskatchewanensis.

The extreme difference in general shape top to bottom at the rear of the skull, the angle of the nasal-frontal slope to the beak, the shape of palatal bone's top which juts into the nares on the Anatotitan, shapes of orbital and supratemporal fenestra, downward curvature on the lateral sides of the premaxilla, and the overall length of the skull make me feel confident in my earlier statement that Anatotitan is not the same animal as Edmontosaurus though, as I said before, is probably very, very closely related. I am aware that an argument for top to bottom compression of the Anatotian skull could very well make a case for the differences noted above, however, I do not believe that this is a likely scenario.

The article I found and mentioned before is about creating a 3-D model of an Edmontosaurus skull to enable a mastication experiment to test theories on how Hadrosaurs chewed. It is filled with great illustrations and is a very interesting and intriguing read, even if it is a little technical. Skim it at least, it's worth it!

Short movie Monday

Movie Monday is going to be a short entry day. The only video I know of that features Edmontosaurus is an episode of Jurassic Fight Club. The sound quality is awful, because someone taped it off of a television with a camera, but it gives you a look at what an Edmontosaurus would do in danger when alone (which is basically nothing!). I found two parts of the episodes and have put both below for you to gander at.

Edmontosaurus and our inner child.

I just wanted to do a short entry today. Really it's going to be short because I have mostly links and only one picture to share anyway. The first link is to everyone's favorite kid related fact page at Dinosaurs for Kids. The second is for Enchanted Learning which has facts as well as coloring. The third link is just for coloring though. You can color online to save a tree or you can print it out to have loved ones and kids, or yourself, decorate the fridge and walls with artwork!

Edmontosaurus: The Visual Evidence.

Last Saturday I posted skulls of Anatotitan, at the top here, and Edmontosaurus for visual comparison. Here is that picture again:

As I noted before, the Anatotitan skull is thinner at the base of the skull and the bill is curved more downward. Could this be a younger Edmontosaurus trait? It has been suggested that Anatotitan is a synonym for Edmontosaurus, so this could be a reality. However, Edmontosaurus is an older species by approximately 5 million years though cohabited with Anatotitan for about the last 2.5 million years with Anatotitan outlasting Edmontosaurs for the last 0.5 million years of dinosaur rule. The timeline does not suggest that synonyms could be too far fetched at all, though my gut feeling is that Anatotitan and Edmontosaurus were at most synonymous at the genus level yet different species still; like coyotes and wolves. I get this feeling because of where they have been found. Edmontosaurus is a Canadian and American dinosaur having been found from Alberta, Canada to South Dakota as well as specimens unmentioned in literature I have found, and therefore suspect, findings of sacral and caudal vertebrae, metatarsal, and femoral bone chips found in Tennessee; again, supposedly. Anatotitan, however, are found only in South Dakota and Montana in Hell Creek formations in both and Lancian formations in South Dakota. Here are a few pictures of the suspect fossils in their display in Memphis, Tn.:

One thing we would have to look at closely would be the two skeletal structures of Edmontosaurus and Anatotitan. These I will leave off with today and let the reader make their own judgments of the skeletal structures of these two animals.

Anatotitan copei

Edmontosaurus annectens

A break from the cycle

Today, this week, we're breaking with our tradition just this once! If you remember there are some who believe Anatotitan is a synonym for Edmontosaurus. So we're going to look at the other side of that coin this week. I present to you Edmontosaurus:

3 species recognized and two possible synonyms exist for this genus. We'll explore them all.

Very short today :(

I think I covered almost all of pop culture this week for Anatotitan. The only thing I didn't mention that I can think of, though I showed a clip, is the portrayal of Anatotitan in Walking with Dinosaurs. Only the movies and only the final episode, but it was still there.

Discovery of Anatotitan

The holotype, or specimen on which the genus is based, was a complete skull and most of a skeleton collected in 1882 by Dr. J. L. Wortman and R. S. Hill for famous American paleontologist Edward Drinker Cope. A second mostly complete skeleton (AMNH 5886) was found in 1904 in Hell Creek Formation rocks at Crooked Creek in central Montana by Oscar Hunter, a rancher. Potential second species A. longiceps was first added to Anatotitan by George Olshevsky in 1991. Mr. Olshevsky runs a Dinosaur Genera List here.

Anatotitan in the news?

Anatotitan is one of those dinosaurs that, when I sit to find articles, I just can't seem to find anything. The problem is, it seems, that Anatotitan is just too bland for anyone to study extensively lately. Sure there were studies when they first found it and people have written papers that are concerned with Anatotitan, they just haven't put them up on any of the sites I regularly check to find articles about the week's dinosaur. Even Google's scholar option turned up nothing useful. It's amazing considering that we know articles have been written, even relatively recently actually considering one of the authors of the Edmontosaurus synonym paper I have met in the flesh not six months ago! So if anyone runs into any good papers on Anatotitan please share with everyone. It would do us all a world of good!.

Pink Palace

The Pink Palace Museum in Memphis is on the struggling end of putting together a dinosaur exhibit. Part of that lies in the fact that I am sure it's not the most popular tourist destination in Memphis. It does address a good chunk of the world and it does include the natural world including the history of the natural world and dinosaurs. I attempted to put together my first shots at panoramic photos (albeit not the greatest first attempt, but okay) and you can find these below.

The coloring on the Dilophosaur tail gives away the change in angles a lot more than the Mososaur, but you can tell with that too since I left the edges in.

What really struck me though, was this:

Just to the right of this image is a dinosaur family tree in which it clearly, and correctly, shows Triceratops sitting atop the Ceratopsian branch on the Ornithischian side of the dino family tree. So why, then, does this image show Triceratops possessing a saurischian hip? My plan is to contact the museum and make them aware of this. I could have done it when I was there but I did not see one curator, administrator, or otherwise in charge looking person. I'll keep everyone updated on how this turns out. Just so you can see that I'm not making this up:

Anatotitan of the silver screen!

Anatotitan eaten by T-Rex? We have that.

Anatotitan family relations? We have that too. Anatomy of an Anatotitan? What do you know? Anatotitan is that silent little character in documentaries that you always see but never notice. These clips highlight their involvement. Sadly, they're quite short also!

Anatotitan is just a large rubber ducky

 Anatotitan: Duck Billed Bath Toy?

I'm just kidding, that toy isn't that specific, it's just a rubber ducky in Oriental Trading's dinosaur rubber ducky package. My wife decorated our friends house with them for my birthday though. Anatotitan coloring sheet? Yes I have one! It's actually pretty awesome. There is also our favorite fact sheet  and a couple of toy reviews today. One by the Dinosaur Toy Collector's Guide and the other by the Dino Toy Blog. Overall, this is a dinosaur you can surely share with the youngin's.

A Giant Duck!

Bill of the Duck!

Anatotitan means "Large Duck." Why does it mean Large Duck? Have a look at its skull above! There are other Hadrosaurs out there too. How can we tell the two species, which come from six nearly complete specimens with complete skulls, from the other Hadrosaurs? There aren't any Anatotitan in this picture, but check out a small helping of the diversity of Hadrosaurs:

The Hadrosaurs closest in skull shape to Anatotitan species is Edmontosaurus. Recall that some authors think that Anatotitan may be a synonym for Edmontosaurus. The skulls may give us a good reason why this is so. Check it out for yourself:

That's Anatotitan at the top and Edmontosaurus at the bottom. They are quite similar aren't they? The squamosal and quadrate are certainly different though. These are bones that make up the back of the skull. If you look at them the curve of the back of the skull is certainly different but perhaps compression over time makes up the reason that the Anatotitan skull looks so much thinner top to bottom than Edmontosaurus. We will have to keep looking at evidence!

Now featuring:

Anatotitan

© Tuomas Koivurinne 2000, Ink on paper

This week we shall venture into the very Late Cretaceous forests of South Dakota and Montana in search of one of the last great Hadrosaurs: Anatotitan. This week's profile picture is an older work from Tuomas Koivurinne. Anatotitan was one of the last Hadrosaurs to evolve and roam the forests and plains of the Late Cretaceous. Anatotitan's genus includes two species: A. copei  and A. longiceps. Some authors have equated A copei to Edmontosaurus as a synonym. We shall see what makes Anatotitan who Anatotitan is and later on, when we discuss Edmontosaurus, we can decide if we agree.

Oviraptor in popular culture

Oviraptor in popular culture has hit every market by now. The character to the left is from a book, a video I posted Monday was from the Spore game, plus there are the documentaries I mentioned and the toys I shared. There are plenty of other places to look for pop culture references to Oviraptor. For now, watch this montage of images:

Finding Day

Oviraptor philoceratops was discovered by Roy Chapman Andrews and described by Henry Fairfield Osborn. We could make a long list for every member of the Oviraptor family, but these two will do for finder day!

I'm hoping in the future to be able to devote more time to discussing the lives of the discovery makers.

Oviraptors in the news

To open, a paper about nesting habits in ovarptorids, which is something we're all interest in when it comes to dinosaurs. Everyone wants to believe dinosaurs had some kind of parenting value don't they? See what this paper says. This second pdf file is a beauty from 1924 which describes not only O. philoceratops but also Velociraptor mongoliensis and Saurornithoides mongoliensis. This paper has what we now know are many inaccuracies, but at the time the science contained in it was very viable. It makes for a very interesting article overall. Also, here's an Oviraptor for your entertainment today:

Video Monday

There are two videos from Dinosaur Planet for movie Monday which fit our needs of describing and showing O. mongoliensis. The videos do not make a differentiation between O. philoceratops and O. mongoliensis, however, O. mongoliensis skulls have a more definitive crest than O. philoceratops which is more like that presented in the videos below. The third species they mention is Ingenia yanshini. Since I don't own the videos and they aren't on youtube I can't paste them directly in here; no embedding feature on the site they're on.
Oviraptor video #1
Oviraptor video #2

Oviraptors love to get colored

Oviraptor loves children! Actually, since the discovery that the eggs found with the first Oviraptor are Oviraptor eggs, yes, they do love children! However, they also are available to help many human children! I linked my favorite kid-centered fact page above. There are also toys to be had. I've included just the link to the Dino Toy Blog because they really analyze the toys like scientists and it's fairly interesting.


Also, look at all the coloring sheets!