It contains no ancestors of modern animal groups.

它不包含现代动物群体的祖先。

youdao

The Burgess Shale formation also has fossils of many extinct representatives of modern animal groups.

伯吉斯页岩地层中也有许多代表着现代动物群中已经灭绝的物种的化石。

youdao

Despite striking similarities, the animal groups do differ in some ways.

尽管有显著的相似性，这些动物群体也在某些方面有不同之处。

youdao

Many animal-protection groups and people worldwide have denounced finning as cruel.

VOA: special.2009.06.16

The animal once lived in groups in Europe and Asia.

VOA: special.2010.06.22

That has drawn criticism from some animal rights groups.

VOA: standard.2010.03.22

Members of some animal groups have criticized shows featuring purebred dogs in the past.

WSJ: Owner: Dog may have been poisoned at Westminster

Many animal humane groups and public officials are outraged at the idea of resuming domestic slaughter.

NPR: Okla. Governor Signs Horse Slaughter Legislation

Bishop added that the governor garnered much of his support from animal protection groups and environmentalists.

CNN: Aerial wolf hunting flies again in Alaska