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About Varied / Hobbyist Alex CruzMale/United States Recent Activity
Deviant for 5 Years
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Family Outing by AlfaPachyDerm Family Outing :iconalfapachyderm:AlfaPachyDerm 12 9 Business as Usual by AlfaPachyDerm Business as Usual :iconalfapachyderm:AlfaPachyDerm 16 3 Gray Wolf by AlfaPachyDerm Gray Wolf :iconalfapachyderm:AlfaPachyDerm 3 0 Hunter Becomes Hunted by AlfaPachyDerm Hunter Becomes Hunted :iconalfapachyderm:AlfaPachyDerm 7 5 Mastodon Family (colored) by AlfaPachyDerm Mastodon Family (colored) :iconalfapachyderm:AlfaPachyDerm 8 5 Mastodon Family by AlfaPachyDerm Mastodon Family :iconalfapachyderm:AlfaPachyDerm 5 2 Armor Concept by AlfaPachyDerm Armor Concept :iconalfapachyderm:AlfaPachyDerm 0 0 Imperial Battle Mammoth by AlfaPachyDerm Imperial Battle Mammoth :iconalfapachyderm:AlfaPachyDerm 2 4 Hunter Becomes the Hunted- Conceptual Design by AlfaPachyDerm Hunter Becomes the Hunted- Conceptual Design :iconalfapachyderm:AlfaPachyDerm 2 0 Battle! by AlfaPachyDerm Battle! :iconalfapachyderm:AlfaPachyDerm 7 9 Quick Sketch by AlfaPachyDerm Quick Sketch :iconalfapachyderm:AlfaPachyDerm 5 0 ...Deinotherium bozasi -(phase 4) by AlfaPachyDerm ...Deinotherium bozasi -(phase 4) :iconalfapachyderm:AlfaPachyDerm 4 0 ...Deinotherium bozasi -(phase 3) by AlfaPachyDerm ...Deinotherium bozasi -(phase 3) :iconalfapachyderm:AlfaPachyDerm 2 2 ...Deinotherium bozasi -(phase 2) by AlfaPachyDerm ...Deinotherium bozasi -(phase 2) :iconalfapachyderm:AlfaPachyDerm 0 0 ...Deinotherium bozasi -(phase 1) by AlfaPachyDerm ...Deinotherium bozasi -(phase 1) :iconalfapachyderm:AlfaPachyDerm 5 0 Ailuropoda melanoleuca by AlfaPachyDerm Ailuropoda melanoleuca :iconalfapachyderm:AlfaPachyDerm 4 3


autumn dont let go by Akulko autumn dont let go :iconakulko:Akulko 112 17 Patreon - Tyrannosaurus detailing update by FabrizioDeRossi Patreon - Tyrannosaurus detailing update :iconfabrizioderossi:FabrizioDeRossi 53 3 Ridge Ray face deets kinda by beastofoblivion Ridge Ray face deets kinda :iconbeastofoblivion:beastofoblivion 641 14 Talarurus by Olorotitan Talarurus :iconolorotitan:Olorotitan 95 13
Tyrant Tantrums Part II: Skin'n'Feathers'n'Scales
When I first made my "Pachyderm Rex" drawing, I was quite proud of it as I looked into the creature's facial covering. However, later on, it seemed that it wasn't up to date with the current info. Several changes were needed to make it up-to-date, and those changes will be addressed in this post, as well as something I have been thinking about for quite some time.
So, without further ado, let us once again take a look at the appearance of the Tyrant Lizard King.
The first thing I want to get started one is, of course, those maxilla dents seen in many a rex.
Those depressions in the maxilla are quite odd, and I was puzzled as to what they were. I originally thought they were naked skin that had thickened due to their sorta rough texture. For a decent amount of time, I've been trying to find out as to how those dents may have been, and I think I have found the answer, but that will be addressed in a later post.
For now, I will focus on a part of the skull that has been intriguing me for
:icon105697:105697 17 44
Agents of Sin: SLOTH by CrazyAsian1 Agents of Sin: SLOTH :iconcrazyasian1:CrazyAsian1 579 14 Loricatosaurus (or Lexovisaurus) by ZEGH8578 Loricatosaurus (or Lexovisaurus) :iconzegh8578:ZEGH8578 49 1 Vigilante from Auca Mahuevo by Midiaou Vigilante from Auca Mahuevo :iconmidiaou:Midiaou 126 22 Omeisaurus tianfuensis by ZEGH8578 Omeisaurus tianfuensis :iconzegh8578:ZEGH8578 43 8 Coloborhynchus sp. by AlternatePrehistory Coloborhynchus sp. :iconalternateprehistory:AlternatePrehistory 91 2 Wessex: Isle of wight scale 4.0 by AlternatePrehistory Wessex: Isle of wight scale 4.0 :iconalternateprehistory:AlternatePrehistory 89 67 Megarachne by Olorotitan Megarachne :iconolorotitan:Olorotitan 143 18 Barosaurus by ZEGH8578 Barosaurus :iconzegh8578:ZEGH8578 54 2 Crime rider by Sir-Giga Crime rider :iconsir-giga:Sir-Giga 70 8
The fuss about Tyrannosaurid feathering
Yeah, most of you probably noticed the controversy as of late : a new paper came out from Bell et al. that finally described some previously undescribed, but rumoured, pieces of tyrannosaurid skin (Well, mostly just T.rex and T.bataar skin). 
The skin impressions revealed very small scales on places like the tail base, illium and neck. 
There's also a few small scale patches from smaller tyrannosaurids, but those are from regions that were commonly left unfeathered anyway (tail underside, feet etc). 
Bell et al. correctly state that these scale impressions don't rule out feathers over the dorsum. But I'll go a step further and say that with the current data, even dorsal feathers are not incredibly likely for Tyrannosaurus rex and it's fellow gigantic tyrannosaurids.
Because what you're really doing is : '' Oh there's scales showing it was less feathered, let's still make it as feathered as possible as the evidence allows''. The scales are pretty uniform eve
:iconpaleosir:paleosir 16 100
Tetrapods of the Oxford Clay Formation by Kana-hebi Tetrapods of the Oxford Clay Formation :iconkana-hebi:Kana-hebi 180 21



Family Outing

Please download the image for best quality.

It’s early spring 13,000 years ago in what is today Alberta, Canada and a herd of
Woolly Mammoths (Mammuthus primigenius) makes their way along the bank of the St. Mary river. The snow is beginning to melt and the long fur coats that kept the family insulated during the winter are now being shed. As the family walks, two juveniles around two years old, weave in and out of the adults as they play while the adults simply ignore their antics. In the back, the youngest of a pair of brothers pushes the older with his tusks in a playful gesture that is sure to induce a joust. Meanwhile, a newborn runs to catch up to her mother as the family trods along.

Mammuthus primigenius - Probably the most iconic of the extinct mammalian fauna, and most famous of the mammoth lineage, the Woolly Mammoth was the most derived and specialized of all the proboscideans, built perfectly to reside in the Mammoth Steppe that covered Eurasia and the northern areas of North America. Males of the species averaged around 3.0m in height and had a mass of about 6 tonnes, but varied from place to place, with those in Siberia being significantly smaller than those in Europe. Females were smaller and lighter than males and also possessed smaller tusks. It appears as though tusks in the females erupted relatively later in mammoths than in modern elephants, as seen in Yuka who is estimated to be between 8 and 11 years of age, although this could be an exception. The teeth of the Woolly Mammoth were perfectly designed to grind the coarse grasses that dominated the environment in which they lived. They had a number of adaptations allowing them to live in the cold grasslands of the north. It has been found that mammoths had an extra, oval flap of skin approximately ⅓ up the length of the trunk, and appears to potentially have been used like a *mitten to warm the dextrous finger like tips. They had a great musk ox-like coat of hair, with the guard hairs measuring up to a meter long. This was perfect for keeping cold out and the heat close to the body. They also secreted oily fats into their fur to mat it together, further amplifying the warming effect. In addition, they had proteins in their blood that prevented it from freezing. Lastly, they had incredibly small ears and a proportionally short tail to help reduce the amount of heat lost to the environment. They seem to have been as smart as modern day elephants and exhibited the same matriarchal herding structure seen in extant elephants, as evidenced by a phenomenal fossil trackway in Alberta, Canada, on which this drawing is based. It went extinct on mainland continents at the end of the Pleistocene around 11,000 years ago, but survived on islands until about 4,000 years ago, well into the Holocene. With the neanderthal, the Woolly Mammoth is the only extinct animal to have its entire genome sequenced.

*I tried to show the female in the front warming her trunk in the little “mitten” of skin, but I may have drawn it too big.

Again, when I scanned this picture not all of the detail was included such as ripples in the water, some of the fur, and some of the detail on the mountains. Most of the detail can be seen if you download the image. I hope everyone enjoys!

Business as Usual

Please download the image for better quality.

It’s a crisp autumn morning along an ancient lake shore some 40,000 years ago in what is today, northern Illinois. A pair of Jefferson’s Ground Sloths (Megalonyx jeffersonii), have made their way down to the lake for an early morning drink before they start a long day of foraging on the browse within the dense forest behind. Before their thirst is quenched, a small family of American Mastodons (Mammut americanum) disrupts the tranquility of the scene as they too come to drink. A rambunctious calf, no more than four months old, plops his face into the cool water, not yet knowing how to use his dextrous trunk. Behind him his mother gently caresses his face, while his aunt and cousin collect water beside him. All the while, a Giant Beaver (Castoroides ohioensis) begins the collection of soft branches to stache for the coming winter so that he and his family might eat through the months of desolation ahead.

Castoroides ohioensis - a large rodent, and largest beaver, found across the United States and Canada. It differed from modern day beavers in the overall size of its massive body, being about the same size as a modern day Black Bear and also by the size of its incisors and the smaller size of its brain. Although there is no known evidence for this genus exhibiting dam building behavior, its close association with Castor (modern beavers) and Dipoides (an extinct beaver known to build dams), indicates that it quite possibly did.

Mammut americanum - The infamous American Mastodon, along with the Columbian and Woolly Mammoths, were the last of the great American proboscideans. It was not closely related to either of them as it was apart of the family Mammutidae as opposed to the Elephantidae and was more like a distant cousin. Males of this species averaged about 2.9m in height and weighed around 8 tonnes on average. It inhabited the entirety of North America, ranging from Alaska in the north to Honduras in the south. It was an herbivore, favoring the cold spruce forests that dominated the eastern United States, but made its home just about anywhere. It was a browser which allowed it to coexist with its grazing mammoth brethren. It appears to have exhibited the same matriarchal herding behavior seen in modern elephants.

Megalonyx jeffersonii - The northernmost ranging member of the Giant Ground Sloths, its remains have been found even in the Yukon. Originally thought to have been a giant lion by American (at the time) vice president Thomas Jefferson, it was later found to be a sloth, and officially named after the American politician in 1822. It was a medium sized animal as far as the giants go, at about 3m long and weighing a tonne and would have probably stood around 2.1m tall when on hind legs. It was a browser and likely used its great arms to pull tree branches close to its mouth in order to eat the leaves. Some social behavior has been found as indicated by an adult sloth discovered with two juveniles of different ages.

I had a lot of fun with this one as it was the first time I drew trees in such detail, along with the animals. The trees were an absolute pain to draw, but I am now pround of them! Unfortunately when I scanned this image, not all of the detail was included such as the ripples in the water This is my current Magnum opus, and I hope my abilities will improve with time. I hope everyone enjoys the picture!
*Please download the image to see it in better quality!


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Alex Cruz
Artist | Hobbyist | Varied
United States
I'm just a guy who likes to draw and sculpt animals (especially elephants).


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CMIPalaeo Featured By Owner Apr 14, 2017
Thank you for the watch :) 
AlfaPachyDerm Featured By Owner Apr 19, 2017  Hobbyist General Artist
You are welcome! :)
ZEGH8578 Featured By Owner Mar 27, 2017
Thanks for watching!
AlfaPachyDerm Featured By Owner Mar 27, 2017  Hobbyist General Artist
You're welcome! Great gallery! I remember seeing some of your old pieces and really enjoying them. Glad to know you're back at it. Keep up the good work!
kach-back Featured By Owner Mar 2, 2017   Traditional Artist
Thank you very much for the :+fav: of my From the Shore - Booster Lake watercolour. That is one of my favourite places to visit and I am so pleased you liked my painting of it. :-)
AlfaPachyDerm Featured By Owner Mar 2, 2017  Hobbyist General Artist
You are absolutely welcome! Your painting is stunning and it makes me wish that I could paint with such grandeur. Keep up the good work :) 
kach-back Featured By Owner Mar 2, 2017   Traditional Artist
I am very pleased to hear that and I will keep up my work. Thanks for the :+fav: of my Tulabi Falls painting as well, it is located to very close to Booster Lake. :-)
GiovanniChis Featured By Owner Feb 22, 2017  Hobbyist Traditional Artist
Thank you for adding my drawings to your favourites. I really appreciate it.  Please visit my Gallery their may be other drawings you like. Have a good day!
AlfaPachyDerm Featured By Owner Feb 27, 2017  Hobbyist General Artist
You are more than welcome! Perhaps one day I might be as good as you at shading and pencil drawing :)
paleosir Featured By Owner Jan 13, 2017  Hobbyist Traditional Artist
thanks for the watch!
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