Roman Hoplite ?

[Quintus Galerius]

Wow, it's a difficult question and now I have no time to tell everything, quite sure during the first period of Rome its exercitus was made with phalanx but I think that there are no imagines of it done in the same period of the phalanx, and I think that nothing was written in the same period of the roman phalanx about it, there's only the Lapis Niger, the first text in arcaic latin, sed nothing about phalanx, maybe Livius said something about it but I don't remember (I've lost my first book of Ab Urbe Condita...). I can tell you that it's very probable that romans used the phalanx, Etruscans (the main enemy of Rome) and Greeks both used it so it's quite sure that Rome adopted it in the first period, then changed into manipular formation, but it's impossible to tell WHEN this change was made, I told it's a very dark period, and even roman writers tell something that they just heard or read about happens of hundreds year before.
During the first period it was made of 3000 pedites and 300 equites, (1000 pedites and 100 equites for each tribe, Ramnes, Tities and Luceres), then it was the new ordo of Servio Tullio, who changed the division and introduced a division according to the richness of the men...but these are all reconstrucion and hypotesis, nothing sure.