This isn't one of the options in the Dinosaur Hunter army list but, as my expedition is a rufty tufty, tooled up Texan oil exploration team, I'm fairly sure they could have easily 'found' a second hand infantry gun, perhaps from a freindly Chinese Warlord's arsenal or armoured train and fitted it to one of their machine gun armed heavy trucks, just in case? It will certainly add some much needed anti-tank firepower in place of a 'proper' armoured car like my Garford Putilov.
The Puteaux 37mm has a range of 40'' against infantry targets and 24'' against vehicles, so it will be limited in range but effective as stand off support against soft targets. I'm working on a points cost of fifty for the vehicle and an extra forty for the gun, which seems a reasonable calculation given the restricted range? I'm going to get this assembled this evening so will post some pictures of the end result once it's glued together and undercoated.