1) Brucella 1) Eubacteria 2) Eubacterium 3) True bacteria 
A coccobacillus (plural coccobacilli) is a type of bacterium with a shape intermediate between cocci (spherical bacteria) and bacilli (rod-shaped bacteria). Coccobacilli are therefore in essence very short rods which may be mistaken for cocci. Haemophilus influenzae, Gardnerella vaginalis, and Chlamydia trachomatis are coccobacilli. Aggregatibacte...
<microbiology> A bacterium with a shape intermediate between coccus and bacillus. ... (09 Oct 1997) ... 
(kok″o-bә-sil´әs) pl. coccobacil´li an oval bacterial cell intermediate between the coccus and bacillus forms. adj., coccobac´illary., adj.
Type: Term Pronunciation: kok′ō-bă-sil′ŭs Definitions: 1. A short, thick bacterial rod of the shape of an oval or slightly elongated coccus.
noun a bacterial cell intermediate in morphology between a coccus and a bacillus; a very short bacillus
a spherelike bacillus.