They are small, fairly drab species superficially similar to sparrows. Like the amoebae they superficially resemble, they continually change their external shape. They were bipedal and superficially resembled an ostrich. The seedsnipes are a small family of birds that superficially resemble sparrows. Among other reptiles, squamates are most closely related to the tuatara, which superficially resembles lizards. These features distinguish it from the superficially similar African citrus psyllid. These superficially dissimilar groups make up the alveolates. Cryptophyte chloroplasts contain a nucleomorph that superficially resembles that of the chlorarachniophytes. The egg is about across, and hatches into a larva that superficially resembles a trilobite. It is considered inferior to the reef knot (square knot), which it superficially resembles. Kata can contain techniques beyond the superficially obvious ones. Pill millipedes and pillbugs appear superficially similar to the naked eye. The underlying skin is unscarred and looks superficially normal. In general it is clumsier than the smaller but superficially similar "Phylloscopus" warblers. Miacoids were mostly small carnivores superficially reminiscent of martens or civets.