Wild Zoids

Wild Zoids: Proliferation of Dinosaur-Type Zoids

    * Rev Raptor shouldn't be listed as an Ornithopod, which refers to certain types of herbivores. This is an error.

- The Creatures That Ruled Planet Zi

    Through the development of the "Zoid Core", the giant dragon-type shelled organisms gained a means of cycling through death and rebirth on land no matter how much the external environment changed, and reached their golden age approximately 200 million years ago.

    They further developed the groundbreaking internal organs that internally and externally absorbed and reprocessed the metallic elements existing in abundant and inexhaustible quantities in the ground, rocks and water. As a result, they came to possess strong bodies that could defy gravity, stand and run.

    Aided by the facts that they had no particular external enemies and that the climate was remaining stable, they increased in variety, grew enormous and prospered greatly.

    These groundbreaking organs enabled them to perform two tasks at the same time, "converting proteins from prey organisms into their internal structures, and converting metallic elements into their skeletons and shells." As a result, they established a splendidly cycling ecosystem that fell under the "Lotka-Volterra Model", a formula presented by Earth ecologists Lotka and Volterra in 1925~1926 that expresses the balance between predators and prey.

    When the eaten decline, the eaters also decline. When the eaters decline, the eaten multiply. Then the eaters multiply...... This beautiful, everlasting ecosystem wrought by God was established.

    It continued to maintain the balance until the day Zoidians began to breed and domesticate "Zoids", and "artificial selection" intervened.

    Wild Zoids obeyed the clause in the basic programming of life to "seek possibilities, diversify and prepare for coming cataclysms", multiplying and changing into a variety of forms in the sky, on land, in the sea and underground.

    Excluding a number of extinct types, the majority of giant dragon-type shelled organisms had reached a peak in numbers and varieties by 50 million years ago, and reigned as the masters of Planet Zi until the rise of the beast-type shelled organisms that would later develop.

    In this era which was so plentiful for them, they branched into many varieties, differentiated as far as possible, and left behind a wide range of species.


    200 Million ~ 50 Million Years Ago



    * When it comes to kanji, dinosaurs and dragons are often used interchangeably. Since the text here used both "Dragon" and "Dinosaur" it was left as dragons, assuming it was intentional by the author.


Those that Fell Victim and Those that Survived


- Those that Fell Victim and Those that Survived

    The era gradually came when the greatest characteristic of the giant dragon-type (dinosaur-type) shelled organisms, who had taken possession of the land; their huge, heavy and hardened shells, became a drawback.

    The environment on Planet Zi began to show signs of change once again. Roughly 50 million to 30 million years ago, a cycle of change in the nuclear fusion rhythm of the F-class yellow-white star at the centre of the Zoid Star System, lasting hundreds of millions of years overlapped with an interglacial period, and Zi experienced a frozen period in which the whole planet turned into a snowball. The thermal radiation of the star, which normally had an effective surface temperature of 6,580K, declined by 20% of the maximum, and due to this, Zi's surface was bound in ice. This caused an extreme increase in the albedo (reflected heat) from Zi's surface, and in a mere 180 years, an instant in geological time, Zi froze over. Because of this, the majority of giant dragon-type (dinosaur-type) shelled organisms were unable to cope with this environmental upheaval and faced a danger of extinction. With the majority of the hydrosphere frozen, the Zoid Cores could not implement their generation process. Those that narrowly managed to survive rapidly changed their characteristics.

    In this "cold period", the small animals began to extend their influence, and taking advantage of this period, they gradually stole away the ecological niches held by the giant organisms.


    50 Million Years Ago


The Rise of Beast-Type Zoids


- From Dinosaur-Type to Beast-Type

    In the era of the giant dragon-type shelled organisms, the small shelled fauna trembled at their fury, living hidden in rocks and lurking under cover. Compared to those giants, they were weak, small and powerless, but they had a single superior point. Their efficiency at generating and consuming energy was surprisingly good.

    Eating little and moving nimbly, they built up their number of offspring in caves and the few remaining warm underground caverns during the "cold period", preparing for their own upcoming era.

    They cleverly inherited the energy generation method their ancestors once used, "chemically decomposing the absorbed metallic elements within their bodies to gain energy", and thereby survived the "cold period" and awaited their later prosperity.

    Furthermore, something that definitively separated the rise and fall of the two groups was the necessity of a solvent when reproducing - in other words, water. Even the Zoid Core, their method of overcoming adversity, was not all-powerful.

    The giant dragon-type shelled organisms required an abundant source of water in the environment where their Zoid Cores would grow into juveniles, so on the frozen land of the glacial periods, they were unable to grow and could only die out. The beast-type shelled organisms did not necessarily require water to grow, so they were able to develop.

    Most species of giant dragon-type shelled organisms were on the verge of extinction, but some of them formed an unexpected ambush for the beast-types. Before the fall of the planetesimals, some of them sought for a place to survive in the high-pressure, high-temperature territory of underground lava reservoirs, and continued to live quietly in this environment similar to the primeval seawater in which they had originated.

    However, they were ultimately special cases, and could not gain the strength to take back the surface from the smaller animals.

    And so, since approximately 30 million years ago, the surface became a world of diverse beast-type shelled organisms derived from the small animals.

    Time passed, and when the climate became warm again, the beast types flourished even more, and large species such as whales and elephants began to appear once again.

    They underwent a process of evolution different to that on Earth, and apparently there were species among them that grew to dinosaur sizes.

    30 Million Years Ago



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Differences in the Monthly Zoids Graphics


    There were quite a few differences between the Zoids Bible, printed and released through the Zoid Core Box, and the Monthly Zoids Graphics, which included pages from the Bible. We'll go through and list those below. The differences are in a bold, italic font.

- Differences

Original Text:

    giant dragon-type shelled organisms

    shelled giant dragon-type organisms




Original Text:

    Excluding a number of extinct types, the majority of giant dragon-type shelled organisms had reached a peak in numbers and varieties by 50 million years ago...

    Excluding a number of extinct types, the majority of shelled giant dragon-type organisms had reached a peak in numbers and varieties by 5000 years ago...




Original Text:

    Roughly 50 million to 30 million years ago, a cycle of change in the nuclear fusion rhythm of the F-class yellow-white star at the centre of the Zoid Star System lasting hundreds of millions of years overlapped with an interglacial period, and Zi experienced a frozen period in which the whole planet turned into a snowball.

    Roughly 5000 to 3000 years ago, a cycle of change in the nuclear fusion rhythm of the F-class yellow-white star at the centre of the Zoid Star System lasting hundreds of millions of years - separate to the cycle of glacial and interglacial periods mentioned earlier - overlapped with an interglacial period, and Zi experienced a frozen period in which the whole planet turned into a snowball.




Original Text:

    In this "cold period", the small animals began to extend their influence, and taking advantage of this period, they gradually stole away the ecological niches held by the giant organisms.

    In this "cold period", the small animals began to extend their influence, and taking advantage of this period, the small animals gradually stole away the ecological niches held by the giant organisms.




Original Text:

    Compared to those giants, they were weak, small and powerless, but they had a single superior point.

    Compared to those giants, they were weak, small and powerless, but they had a single superior point to these giants.




Original Text:

    Furthermore, something that definitively separated the rise and fall of the two groups was the necessity of a solvent when reproducing - in other words, water. Even the Zoid Core, their method of overcoming adversity, was not all-powerful.

    The giant dragon-type shelled organisms required an abundant source of water in the environment where their Zoid Cores would grow into juveniles, so on the frozen land of the glacial periods, they were unable to grow and could only die out. The beast-type shelled organisms did not necessarily require water to grow, so they were able to develop.

    Even the Zoid Core, their method of overcoming adversity, was not all-powerful.




Original Text:

    Most species of giant dragon-type shelled organisms were on the verge of extinction, but some of them formed an unexpected ambush for the beast-types. Before the fall of the planetesimals, some of them sought for a place to survive in the high-pressure, high-temperature territory of underground lava reservoirs, and continued to live quietly in this environment similar to the primeval seawater in which they had originated.

    Meanwhile, most species of shelled giant dragon-type (dinosaur-type) organisms were on the verge of extinction, but some of them formed an unexpected ambush. Before the fall of the planetesimals, some species sought for a place to survive in the high-pressure, high-temperature territory of underground lava reservoirs, and they survived in this environment similar to the primeval seawater in which they had originated. Consequently, there also existed underground sub-species that reproduced without a Zoid Core, and these included giant shelled organisms that were thought to already be extinct.




Original Text:

    And so, since approximately 30 million years ago, the surface became a world of diverse beast-type shelled organisms derived from the small animals.

    And so, since approximately 30 million years ago, the surface became a world of diverse shelled beast-type organisms derived from the small animals.