On this basis, Apatosaurus could not have had a reptilian respiratory system, as its tidal volume would have been less than its dead-space volume, so that stale air was not expelled but was sucked back into the lungs.
Baseándose nisto, Apatosaurus non podería ter un sistema respiratorio reptiliano, xa que o volume mareal tería sido menor que o seu volume de espazo morto, polo que o aire estancado non podería ser explulsado, senón que acabaría pasando aos pulmóns.