Search results
Results from the WOW.Com Content Network
German yellowjackets are known to be especially successful and destructive invaders of new territories. These wasps are polyphagous predators which feed on native arthropods , and because they are able to outdo many other animals for food, they have caused considerable harm to the indigenous wildlife of areas which they have invaded.
General patterns of dental morphological evolution throughout human evolution include a reduction in facial prognathism, the presence of a Y5 cusp pattern, the formation of a parabolic palate and the loss of the diastema. Human teeth are made of dentin and are covered by enamel in the areas that are exposed. [2]
Face of a southern yellowjacket (Vespula squamosa)Yellowjackets may be confused with other wasps, such as hornets and paper wasps such as Polistes dominula.A typical yellowjacket worker is about 12 mm (0.47 in) long, with alternating bands on the abdomen; the queen is larger, about 19 mm (0.75 in) long (the different patterns on their abdomens help separate various species).
While most species of this genus inhabit North America, four Vespula species inhabit Europe, namely V. austriaca, V. germanica, V. rufa, and V. vulgaris.; Two common European species, the German wasp (V. germanica) and the common wasp (V. vulgaris), have established in other countries; both species are now found in New Zealand, Australia, and South America, while the former has also been ...
It was theorized that positive selection for shovel-shaped incisors over the spatulate incisors is more commonly found within cultures that used their teeth as tools due to a greater structural strength in increased shovel-shaped incisors. [2] In some instances, incisors can present a more pronounced version of this called double shovel-shaped.
History books can only cover so much, and most of us haven’t cracked one open since we were in college. But if you want to learn about some fascinating moments from the past, accompanied by ...
Bone fragments unearthed in a cave in central Germany show that our species ventured into Europe's cold higher latitudes more than 45,000 years ago - much earlier than previously known - in a ...
The discovery of human bone fragments sent the researchers digging through the material excavated about nine decades ago — in which they found additional skeleton fragments.