Burmese-Amber-Fossil-Insect-Inclusion-Caddisfly-group-Spider-30mm-15.65ct 0.jpg

Burmese Amber, Fossil Insect Inclusion, Caddisfly group and a Spider

Kachin State, Burma
Cretaceous - Cenomanian Age 98.79 ± 0.62 Million Years ago
Burmese amber — Cretaceous biota fossilized in prehistoric amber that's found within present day Myanmar (Burma) of Southeast Asia. The caddisflies, or order Trichoptera, are a group of insects with aquatic larvae and terrestrial adults. There are approximately 14,500 described species, most of which can be divided into the suborders Integripalpia and Annulipalpia on the basis of the adult mouthparts. Integripalpian larvae construct a portable casing to protect themselves as they move around looking for food, while Annulipalpian larvae make themselves a fixed retreat in which they remain, waiting for food to come to them.
Spiders (order Araneae) are air-breathing arthropods that have eight legs and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every habitat with the exceptions of air and sea colonization. As of November 2015, at least 45,700 spider species, and 113 families have been recorded by taxonomists. Although the fossil record of spiders is considered poor, almost 1000 species have been described from fossils. Because spiders' bodies are quite soft, the vast majority of fossil spiders have been found preserved in amber. The oldest known amber that contains fossil arthropods dates from 130 million years ago in the Early Cretaceous period. In addition to preserving spiders' anatomy in very fine detail, pieces of amber show spiders mating, killing prey, producing silk and possibly caring for their young. In a few cases, amber has preserved spiders' egg sacs and webs, occasionally with prey attached; the oldest fossil web found so far is 100 million years old. Earlier spider fossils come from a few lagerstätten, places where conditions were exceptionally suited to preserving fairly soft tissues.
Split taxonomy:
Kingdom: Animalia/Animalia
Phylum: Arthropoda/Arthropoda
Class: Insecta/Arachnida
Order: Trichoptera/Araneae