There are acorn worms
and before you start dismissing worms as inferior and primitive then consider that the acorn worms
are classified with us humans in the Phylum Chordata -- chordates like us.
Vargas (1987, 1988) also listed the presence of peanut worms (Sipuncula), Glottidia audebarti (Broderip, 1835) lamp shells (Brachiopoda) and acorn worms
The DNA of two acorn worms
from Hawaii were compared with those of 32 species, including humans.
Craniata, or "vertebrates" for example, are given the same weight as lineage containing acorn worms
(Enteropneusta), a solitary class of hemichordates, are marine vermiform invertebrates that generally live concealed in burrows (Hyman, 1959).
Christopher Cameron of the University of Montreal's Department of Biological Sciences and his colleagues have confirmed that Spartobranchus tenuis is a member of the acorn worms
group, which are seldom-seen animals that thrive today in the fine sands, and mud of shallow and deeper waters.
Enteropneusts - or acorn worms
- are marine animals closely related to starfish and sea urchins.
Yoda purpurata -- to be exact -- is the name now given by a University of Aberdeen-led team of scientists to one of three new species of deep sea acorn worms
or Enteropneusts discovered 2,500m or around 1.
In preliminary studies, Shu Degan of Xian Northwest University places Yunnanozoon in another phylum, the hemichordates, which includes the modern acorn worms
Minuscule acorn worms
may be present in samples collected elsewhere using similar methods, but may have been overlooked due to their minimal and nondescript external characters (Fig.
The largest oocytes cause an outward bulge of the epidermis but are not externalized in epidermal pouches as they are in acorn worms
of the genus Allapasus (the latter were described by Holland et al.
The northwest plains were the home of deep-sea enteropneust acorn worms