when it comes to gentleness, it should be considered odd shrimp one (* * * *) * *
, the largest animal in Cambrian, has several orders of magnitude over the same age. On this huge body is a large appendage full of thorns, brass bell eyes and mouthed teeth. Because of this fierce appearance, odd shrimp as a top predator can be seen as a popular . So many large fecal fossils containing small animal bones in the same period were also considered to belong to odd shrimp.
Look at the horrible mouthpieces of the Canadian shrimp (< EM > Anomalocaris canadensis ) and you can see that there’s no reason for such a person…
but an article on “Nature” in 2014 changed this look. The article introduced a strange kind of shrimp named (Tamisiocaris borealis) named northern shrimps.
the northern sieve shrimp was discovered in the wilderness of the 2010 in the Arctic Circle of Greenland. The anterior appendages of this exotic shrimp have long, fine, tidy spines on the abdomen, and longer, denser spines on the spines, like a filter. Scientists believe that this structure is used to capture microorganisms of about 0.5mm in size. That is to say, although the shrimp like the fierce appearance, but only rely on the filter feed microorganisms live , its huge mouthpiece is also used to swallow these millimeter level of food. We have to refer to another widely known species: Cetacea (baleen whale) (Balaenopteridae). They eat a lot of sea water and filter the sea creatures in a certain size. They are small, small krill and plankton for their huge size.
- the front appendage of North shrimp (Tamisiocaris borealis) and its sketch
- anterior screening of the northern shrimp (Tamisiocaris borealis) and its Handbook
the baleen whale family represented by blue whale has a family history of thirty million years. If you trace back to the late Cretaceous seventy million years ago, the Aristonectes of the type may be such a type of active filter. But compared to the odd shrimp in the past five hundred million years, they are only the younger generation. Therefore, the shrimps may be the oldest known (activelyswimming suspension feeders) that we know now, and it’s the Cambrian whale.
- prey size of several feeding animals. The abscissa is the size of the filter screen and the ordinate is the prey size. The value of the sieve shrimp (< EM > Tamisiocaris < / EM >) at the intersection of dotted lines in the figure is < / Li > < / UL > between Flamingo and whale shark, blue whale, etc.
shrimp is not a special case. Since the discovery of the shrimps, scholars have identified a growing number of filter – eating shrimp, but their filtering structure is not so special, the previous research has not been identified. Of course, some shrimps still “stick to their posts” and do the horrible mouthpieces of the Cambrian animals, but the size of the shrimp shrimp can already be separated from them. In order to facilitate research, scholars called this kind of sharp fangs, but eat liquid shrimp, known as Hird shrimp.
P > We can breathe a sigh of relief for the Cambrian small animals, who often encounter giants, perhaps < strong > just gentle big men < / strong >.
- northern sieved shrimp (Tamisiocaris borealis) is roaming and swimming is an ancient and early notochord, and a few small arthropods, such as
, on the left.