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As discussed above, a large-scale taxonomic revision of the family is most likely in order given the lack of monophyly observed for most genera in the tree (Figure 2). For example, Coronado(T) is the basal member of a clade containing mostly _Porphyrobacter_ that has strong bootstrap support, but is polyphyletic with respect to both _Erythromicrobium_ and _Erythrobacter_. And, this clade falls within a well-supported polyphyletic clade of _Erythrobacter_. Based on this tree, we chose to compare Coronado(T) to the three genera in Table 1.   Analysis of the draft genome of strain Coronado(T) was used to complement the physical characterizations typical of the family _Erythrobacteraceae_. For example, Coronado(T) does not contain any of the numerous genes involved in chlorophyll biosynthesis, rendering protein extraction/spectrophotometry unneccessary. unnecessary.  Conversly, while no flagella were observed by TEM, this strain appears to possess the required genes making it likely that the flagella were lost in sample preparation or that their expression is condition-dependant. condition-dependent.  **Polar lipid, respitory lipoquinone, and fatty acid methyl esters**  The major cellular fatty acids of strain Coronado(T) are C18:1\(\omega\)7cis (56.6%) and C16:0 (20.3%). Other fatty acids found in significant amounts (>1%) are 2-OH-C14:0 (4.8%), C16:1\(\omega\)5cis (1.1%), C16:1\(\omega\)7cis (9.8%), C17:1\(\omega\)6cis (2%), C18:1\(\omega\)5cis (1.1%), and C18:0 (1.2%). The fatty acid profile of strain Coronado(T) fits generally within the ranges described for members of the most closely related genera (_Erythrobacter_, _Porphyrobacter_ and _Erythromicrobium_, comparison data from \cite{Hiraishi_2002}). The two exceptions to this are a slighly slightly  higher level of C14:0 than average and a much higher level of C16:0 than average. The major respiratory quinone is ubiquinone 10 (92%), as it is for all members of the _Erythrobacteraceae_ family. The predominant polar lipid is phosphatidylglycerol, with significant amounts of sphingoglycolipid and phosphatidylethanolamine. Smaller amounts of diphosphatidylglycerol, phosphatidylcholine, and two unidentified phospholipids were also observed (Figure 3).