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Ramul
— REP: The Inversognathes
Published:
2013-11-26 22:57:24 +0000 UTC
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Description
The inversognathes are a relatively young, derived group of terrestrial tentaculopods that mostly inhabit forests. Their most striking trait are the backwards-facing jaws. A possible reason for this development is the tendency of this group for extraintestinal digestion and the food being chewed closer to the mouth opening with the new jaw arrangement. Another feature are the sclerotized legs. While leg sclerotisations arose in many different tentaculopod taxa, the leg pattern with the unused legs being reduced and the femoral sacs are unique to the inversognathes. The femoral sacs contain body fluids and contract to extend the leg. The tips of the legs bear a single claw, which is short and straight in ground dwellers but long and curved in climbers. Inversognathes follow very different feeding methods, ranging from opportunists to monophagous species. The species with primitive chewing jaws are predominantly carnivores and omnivores, the multiple groups that developed piercing jaws are often herbivorous, but also contain predators and a few parasites. Inversognathes are generally small and don't exceed 2 cm in size, an exception is the giant red cap, which reaches up to 7 cm in length and feeds on vermiphyte seeds.
Bulltrap: This member of purely predatory inversognathes underwent further derivation of the head with it developing a kink and the jaws becoming upright. This arrangement allows the bulltraps to grow longer jaws, which are employed in catching fast prey, like micropneumonopteres.
Short-necked syringer: A member of an omnivorous group that reduced the teeth on the jaws and fused the teeth of the head to a lammella that transports the functional opening of the mouth to the front of the head. with this developments syringers are able to inject digestive enzymes and suck their food directly through the jaws. The more primitive syringers have separated jaws, in the more derived the jaws are fused into a feeding tube.
Umbrella tree mitling: Mitlings developed their sucking jaws independently from syringers by estending a part of of the jaw base into a feeding tube and using the jaws themselves as a pump when feeding. Opposed to syringers, most mitlings are herbivores that feed mostly on terrestrial lithophytes.
What the hell happened to the title. Also, four more sheets being thrown out tomorrow.
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Comments:
1
PeteriDish
[2013-11-27 07:50:37 +0000 UTC]
fantastic!
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