WebFeb 1, 2024 · Chaetognaths are marine invertebrate predators, with body length up to 12 cm. They are found in all marine ecosystems, from estuarine to oceanic waters. Due to … WebChaetognatha. However, chaetognaths are now seen as an outgroup to the Lophotrochozoa (within the gnathiferan spiralian protostomes, Marlétaz, Peijnenburg, Goto, Satoh, & Rokhsar, 2024), and their deuterostome-like development has been attributed to a more ancestral-like pattern of development (Martín-Durán, Passamaneck, Martindale, & …
arrow worms - Encyclopedia of Life
WebChaetognatha, or arrowworms, is a small phylum of about 120 marine, mainly holopelagic ‘worms’; some species, mainly of Spadella and Paraspadella, are benthic, and it appears that many deep-water forms remain to be described.The Lower Cambrian (Chengjiang) Protosagitta (Hu et al. 2007) is unquestionably a chaetognath.The monophyly of the … WebPhân loại học và các nhánh của giới Động vật[ sửa sửa mã nguồn] Động vật là đơn ngành, nghĩa là chúng có nguồn gốc từ một tổ tiên chung. Động vật là chị em với Choanoflagellata, cùng với chúng tạo thành Choanozoa. [339] Giới … emcloud ログイン
Evolution: Arrow Worms Find Their Place on the Tree of Life
WebApr 1, 2010 · Arrow worms (Phylum Chaetognatha) are abundant planktonic organisms and important predators in many food webs; yet, the classification and evolutionary relationships among chaetognath species remain poorly understood. A seemingly simple body plan is underlain by subtle variation in morphological details, obscuring the affinities of species … WebNov 21, 2014 · Background Chaetognatha are a phylum of marine carnivorous animals which includes more than 130 extant species. The internal systematics of this group have been intensively debated since it was discovered in the 18th century. While they can be traced back to the earlier Cambrian, they are an extraordinarily homogeneous phylum at … WebChaetognatha is a phylum of small, slender, marine worms, generally characterized by a largely transparent body, fins on both the tail and the … emc necプラットフォームズ