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About Traditional Art / Hobbyist Core Member Erik29/Male/United States Groups :iconwelovekatherine: WeLoveKatherine
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When Dinosaurs Ruled the Earth by DaBrandonSphere

The mists are a nice touch, as is the 'apex predator on the cliff announcin' its territory claim' sitch. Gotta love the classics. This ...

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Common name: N/A
Scientific name: Megazostrodon rudnerae
Year named: 1968, by Crompton & Jennings
Meaning: 'Rudner's large girdle tooth'
Length: 10-12 cm/4"
Time: Late Triassic to Early Jurassic, 200/199-196 mya
Range: Lesotho, Southern Africa
Biome: Woodlands
Frequency: Common
Organization: Solitary
Diet: Insects
Enemies: Small theropods
Danger Level: Low

When you look up the first true mammals in dinosaur books you almost certainly going to be presented with a picture and brief description of Megazostrodon. Modern analysis of Megazostrodon has it in a position that is almost fully mammal, yet not quite. True mammals begin with the triconodont group, something that the Megazostrodontidae used to belong to until analysis placed it just outside.

Despite the revised classification, Megazostrodon's adaptations are almost totally mammalian, and it continues to be a strong transitional form between the earlier therapsids and true mammals. The first key area is that the mandible (lower jaw) became one single bone rather than the seven seen in reptiles. However these bones were not lost they actually got rearranged to form the middle ear, becoming the mammalian hearing system. Megazostrodon also had a covering of hair over its body, something that was not necessarily new as suggested by Thrinaxidon and Cynognathus, but still a clear mammalian trait.
Common name: Giant griffinfly
Scientific name: Meganerua myoni
Year named: 1885, by Charles Brongniart
Meaning: 'Big nerved'
Length: Nymph 12", adult 17"
Wingspan: 2.5'/25-29"/75 cm
Time: Late Carboniferous, 360/311-282/305-299 mya
Range: Nove Scotia?, Scotland, Western Europe. Specifically Commentry in France and Bolsover in Derbyshire, England
Biome: Humid swamp
Frequency: Very common
Organization: Solitary
Diet: Nymph- small fish, tadpoles, etc; Adult- other insects, spiders, small amphibians
Neighbors: Aphthoroblattina?, Archaeothyris florensis, Archimylacris?, Arthropleura armata, Eogyrinus attheyi, Phlegethontia longissima
Enemies: Larger amphibians
Danger Level: Low

They are active from dawn to dusk and aren't very social, either living alone or sharing a small pond with several others. They have a neat way of catching prey, they form a basket with their legs and use it as a "net" to catch smaller insects. The nymphs are equally carnivorous eating small fish, tadpoles, and any other suitable prey. With adults being the size of a small hawk and nymphs the size of a human hand, there is no doubt that this dragonfly is the top insect predator of the swamp.

Males and females are dark blue with green stripes on their abdomen and a lighter blue back. Their huge eyes are dark red and their wings are a transparent turquoise. Nymphs are dull brown with black eyes, they stay underwater for the first few months of their lives using their slingshot-like jaws to lunge out and grab prey, then they crawl out of the water and molt. Revealing their adult form then taking to the skies to restart the life cycle again.

While Meganeura are the top predators they are also prey for many animals like large fish, amphibians, and lizards. Meganeura can even sometimes be cannibalistic.

There is also a less common color morph of Meganeura that lives in the middle of the Western Swampland and the Eastern Forests, this race is bright reddish-orange with green eyes, and yellow wings. It is more aggressive and smaller than it's blue counterpart and therefore will attack any other Meganeura that comes into it's territory.
Paleo files- Meganeura
Finally, an update on this mega-bug's profile.
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Eurypterid
Water Dependent (Ex): Eurypterids can survive out of the water for 7 1/2 hours.

Common name: Spiny eurypterid
Scientific name: Megalograptus welchi
Year named: 1874, by Miller
Meaning: 'Giant writing'
LP: 13
XP:
Length: 4'
Time: Ordivician, 460-445 mya
Range: North America- New York?
Biome: Coastal Reef
Frequency: Common
Organization: Solitary or pair
Diet: Fish, trilobites, other sea scorpions, smaller orthocones
Neighbors: Cameroceras trentonense, Astraspis desiderata, Isotelus rex, Paraceraurus ruedemanni
Enemies: Other eurypterids, orthocones
Danger Level: Medium

Megalograptus is a species of Euryperid, AKA Sea Scorpion, that lived during the Ordivician Period, 450 million years ago. These aquatic arthropods can grow up to 4 feet in length, although they are not very big, they can still be intimidating.  The Megalograptus is an ambush predator, it can hide in the sand and mud, waiting for prey to swim too close to it, the Megalograptus normally preys on smaller sea scorpions, trilobites, fish, and small species of Orthocones, while they can be prey to large Orthocones such as Cameroceras, as well as larger Sea Scorpions.  These invertebrates are known to crawl onto shore in large groups to lay their eggs, this makes sure they don't get eaten by any of the predators that live in the water.

Species:
Megalograptus alveolatus (Shuler, 1915)
Megalograptus ohioensis- Caster & Kjellesvig-Waering, 1955
Megalograptus shideleri- Caster & Kjellesvig-Waering, 1964
Megalograptus welchi- Miller, 1874
Megalograptus williamsae- Caster & Kjellesvig-Waering, 1964

Common name: N/A
Scientific name: Megarachne servinei
Year named: 1980, by Mario Hunicken
Meaning: "Big spider"
LP: 13
Length: body 34 cm/16"
Legspan: 20"
Time: Carboniferous, 298-295 mya
Range: Argentina
Biome: Rainforest and wetland (Swamp)
Frequency: Common
Organization: Solitary
Diet: Tiny invertebrates
Neighbors: Helenodora inopinata, Tullimonstrum gregarium
Enemies:
Danger Level: Low

When first discovered the specimen was thought to represent a spider but in 2005, the specimen was re-examined along with a second specimen by Paul Seldon, Jose Corronca and Mario Hunicken and actually found to be a eurypterid. Eurypterids are essentially sea scorpions and given that they are related to arachnids and have four pairs of legs, the fossilised remains can look spider like. Although not a giant spider, Megarachne has proven not to be a disappointment and as a Eurypterid it displays morphological features that distinguish it from among the other members of its family.

Scientific name: Pterygotus buffaloensis
Year named: 1839, by Agassiz
HP: 29
Attributes: Str 15-16, Dex 10-11, Con 13-14, Int -, Wis 9-10, Cha 2-4
Length: 7'7"-9.2'
Time: Silurian-Devonian, 420-410 mya
Range: Worldwide, except Antarctica
Biome: Reef & Coastal
Frequency: Medium
Organization: Solitary, pair, or cluster of 2-5
Diet: fish, trilobites, thunder scorpions,
Enemies:
Challenge Rating: 2
Agressiveness: 6

A scorpion the size of a crocodile skitters across the ocean floor.

Also known as "sea scorpions", an eurypterid is an aquatic arthropod. They prey mainly on fish and other marine marine creatures, but have been known to attack humanoids on shorelines, dragging them beneath the surface.

One of the oddest creatures you will ever see in the shallows of the coastal regions, eurypterids resemble a genetic mish-mash of spider, scorpion, and water bug. They have pincers, limbs that may be semi-paddled or thin and spindly, bulbous multifaceted eyes, and long tails that may end in either a paddle or a barb. Jaekelopterus is the largest of these beasts and one of the largest arthropods to ever live, surpassing its 7-foot cousin pterygotus. Inside its heavyset mouth are two spider-like chelicera, designed to mash flesh inside them in a painful grinding. Giant eurypterids include species such as the jaekelopterus and similar envelope-pushing creatures, mammoth beasts of the sands that bury themselves in the sediment of tropical waters and wait for prey, be it fish, smaller eurypterids, or an unfortunate humanoid leg. Some seafaring cultures actually consume giant eurypterids like invertebrate tuna, tapping the sandy bottoms with sticks until they get a grab from one. Once this occurs, the huge arthropod will be speared into submission, then dismantled and cooked upon a fire. There are some rumors that, like some desert tribes creating armor and weapons from monstrous scorpions, there are some warriors that wear eurypterid-plate and wield eurypterid-claw gloves. Eurypterids are aquatic, but they can survive on land for a small amount of time.

COMBAT
An eurypterid uses its tremorsense to locate prey in the water, then moves in for the kill.

Scientific name: Jaekelopterus rhenaniae
Year named: 1914, by Jaekel
HP: 42
Length: 8.2'
Attributes: Str 15, Dex 11, Con 13, Int -, Wis 10, Cha 2
Time: Devonian, 390 mya
Range: Klerf Formation of Willwerath, Germany
Biome: Reef, freshwater rivers & lakes
Frequency: Medium
Organization: Solitary or pair
Diet:
Enemies:
Challenge Rating: 6
Aggressive: 7

A scorpion the size of a crocodile skitters across the ocean floor.

Also known as "sea scorpions", an eurypterid is an aquatic arthropod. They prey mainly on fish and other marine marine creatures, but have been known to attack humanoids on shorelines, dragging them beneath the surface.

One of the oddest creatures you will ever see in the shallows of the coastal regions, eurypterids resemble a genetic mish-mash of spider, scorpion, and water bug. They have pincers, limbs that may be semi-paddled or thin and spindly, bulbous multifaceted eyes, and long tails that may end in either a paddle or a barb. Jaekelopterus is the largest of these beasts and one of the largest arthropods to ever live, surpassing its 7-foot cousin pterygotus. Inside its heavyset mouth are two spider-like chelicera, designed to mash flesh inside them in a painful grinding. Giant eurypterids include species such as the jaekelopterus and similar envelope-pushing creatures, mammoth beasts of the sands that bury themselves in the sediment of tropical waters and wait for prey, be it fish, smaller eurypterids, or an unfortunate humanoid leg. Some seafaring cultures actually consume giant eurypterids like invertebrate tuna, tapping the sandy bottoms with sticks until they get a grab from one. Once this occurs, the huge arthropod will be speared into submission, then dismantled and cooked upon a fire. There are some rumors that, like some desert tribes creating armor and weapons from monstrous scorpions, there are some warriors that wear eurypterid-plate and wield eurypterid-claw gloves. Eurypterids are aquatic, but they can survive on land for a small amount of time.

These nasty arachnid relatives learned to use underwater ruins both as protection and ambush sites, so look out for them.

COMBAT
An eurypterid uses its tremorsense to locate prey in the water, then moves in for the kill.
Paleo files- Eurypterids
This Paleo file involves 4 eurypterid species- Megalograptus, Megarachne, Pterygotus, & Jaekelopterus.
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deviantID

Paleo-Beast-Emperor
Erik
Artist | Hobbyist | Traditional Art
United States
1. I've a passion for the animal kingdom, livin' and extinct, real and fictional. I even like cryptids, mutants, even robotic animals.
2. I'm a BIG fan of Digimon, specificly Taiora. (I never did like Sorato) Or rather, I was as much- other interests.
3. I also like Kim Possible, Ben 10, Total Drama, etc.
4. I like to groove (dance) to whatever music I like, often latin (such as Paulina Rubio & Ricky Martin) and specific movies such as the Tarzan.
5. I like to watch specific shows such 6Teen, Stoked, etc.
6. I have a taste for fantasy, often the creatures of D&D, the kaiju, and superpowers (I'd go for shapeshiftin' if I could have one).
7. I love to draw animals (the extinct kind in particular) and particular cartoon characters.
8. I like to play PS2/PS3 and PC games, a few horrors (Silent Hill, Resident Evil, etc), action/adventures (Sly Cooper, Haunted Mansion, etc), and so on.

Current Residence: Pembroke Pines, Florida
Favourite genre of music: Latin, Soundtrack, electronica, Pop (Kelly Clarkson), Country (Carrie Underwood)
Favourite style of art: drawin' in pencil
MP3 player of choice: iPod Nano
Skin of choice: scaly (preferably reptilian)
Favourite cartoon character: Reef & FIn nowadays
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Well, today's my 29th birthday. Yay me. Not that anyone cares.
  • Mood: Neutral
  • Reading: THe Princess and the Spider by StrixMoonwing

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:iconjplover764:
JPLover764 Featured By Owner 3 days ago
You have been a very loyal fan of my fanfic. Thank you very much for your support.

Consider yourself watched!
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TitanChief10 Featured By Owner Jan 17, 2016  Hobbyist Traditional Artist
Thank you for adding my work to your collection :D
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digidestinedgirl09 Featured By Owner Jan 15, 2016  Hobbyist Writer
Happy Birthday dude. Live it up today.
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DinoBirdMan Featured By Owner Jan 4, 2016  Student Artist
Thanks for fave!
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Gwyndor Featured By Owner Jan 4, 2016  Hobbyist Traditional Artist
Thanks for the favourite :D
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Sharper-The-Writer Featured By Owner Dec 26, 2015  Hobbyist Writer
Thanks for the fave on the MHS layout!
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TheMorlock Featured By Owner Sep 21, 2015  Student General Artist
Thanks for the faves. :)
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DrakebyRS Featured By Owner Aug 30, 2015  Hobbyist Digital Artist
Thanks so much for the fav:w00t:
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FitzOblong Featured By Owner Jul 19, 2015
Thanks for the :+fav: . :iconfundanceplz:
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Dontknowwhattodraw94 Featured By Owner Apr 18, 2015  Hobbyist Traditional Artist
Thank you for the favorite :)
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