So the Enterprise crew go back in time to near the end of the age of dinosaurs, and we don't see any signs of Voth anywhere. If there was any signs of a species on Earth at a minimum of near to space-faring levels of development it would have been stated in the episode, but we get nothing. Assuming this wasn't simply due to time constraints or a massive oversight by the production crew, the lack of acknowledgement of the Voth does leave an even bigger mystery about their origins then we've had since the VOY episode: Now while it's not directly stated in the episode it's at least a bit implied that the Chicxulub impact happened pretty shortly after the events of the episode, so how did the ancestors of the Voth escape? To me it seems like the episode gives two likelier possibilities or at least leaves open the option for two less likely possibilities, but they all have holes in the logic:
Option 1: Stolen Dol'drm tech - If we give the concept that the KT event wasn’t immediate, but a fragment orbited the Sol system for potentially thousands of years, then Proto-Voth could have had time to develop into a space faring society. While they could have simply naturally progressed in this scenario, it's possible they could have leap frogged thousands of years by reverse engineering the tech from the crashed Dol'drm ship. It could also explain why the Voth, while extremely advanced compared to 24th century Federation, they’re not where you’d expect a species with a at least 66 million year head start to be at (32nd century star fleet had time travel tech for centuries and had a general working knowledge on multiversal travel, even if by the 32nd century these techs were banned) and the lack of fossil evidence of Voth society. They arose quickly in the region immediately surrounding the ship, maybe came into enough contact with fleeing Martians to get a rough idea how the tech works, and advanced just enough to get out of Earth when the time came. This would mean they’d have a hyperspecialized tech tree, with really high levels of engineering skill and practical knowledge about how to make the tech work but not how it works. They’d be a monoculture (due to not arising fast enough to develop into other cultures or the high tech Voth simply steamrolling everyone else) so would have a rigid way of thinking (which is the case with modern Voth), and the lack of a theoretical framework for the tech would likely mean they’d struggle with progressing past Dol'drm level of tech, and a rigid social order that imposes doing things the “proper way” would compound the issue. Since this would mean they’d not be likely to develop warp on their own, they’d only be able to leave the system on massive sublight ships, which would explain why all Voth live in a massive city-ship. With no outside contact and a single slow moving ship they’d likely be able to exist indefinitely, drifting across the galaxy and only barely advancing technologically.
Option 2: Slaves - If the KT extinction is too close to the events of the episode, then the only way out would be if Martians take some Earth life with them on their way out. The biggest hurdle to this is why bother? Mars was dying, so I'd understand if they supplemented their resources with Earth biota, but dinosaurs are huge and are resource hogs, so not the kind of things you bring with if it's just for terraforming or farming them. Plus if Capt. Cassell’s view of “Alien to me means evil” is the norm for her people; they'd have to be truly desperate to harvest from Earth. This may be a leap, but the only possible reason I could think of to justify Voth existing in this scenario is if there were proto-Voth already on Earth, at a stone-age level of tech, and the Martians enslaved them out of a need for manpower. I could see the Martians temporarily ending up on Earth after Mars died, but post-KT Earth would have been a hellscape for thousands of years, so it wouldn’t have been viable long term. So the Martians take what they can, and leave. The proto-Voth spend an indefinite period of time with the Martians, and then either escape, overthrow, or are simply given their freedom and either integrate into Martian society or leave and start their own. Considering the Voth are seemingly contained to one city-ship and aren't spread out, I'd lean on their ancestors having escaped in one single go and taken what they could with them. It would explain their insular nature and their lack of records, as they'd probably would only have they tech they fled with and not the sum total of the Martian recorded history. Any still enslaved Voth ancestors would have died out with the Martians, leaving this single group to continue on in isolation.
Option 3: Intermediate homeworld - Now if KT happened fast and Proto-Voth slaves weren’t what happened, then maybe the Martians did take samples of Earth life and used them in terraforming or agriculture. I’m leaning towards it not being the Martians, because if Martian DNA is all over the galaxy, they surely Earth DNA would have been spread by them too if they were relying on Earth biota for resources, yet no mention anywhere in canon of this being the case. This would leave it to some other species like the Preservers or the Nacene to have come along and saved Earth biota and seeded it elsewhere in the galaxy. If it was someone like the Preservers then it could have been a single seeding event, saving the biota of a “dying” world and putting it elsewhere while not leaving a trail of seedings like the Martians would have. This would allow for the dinosaurs to flourish somewhere else for millions of years, and overtime give rise to the earliest ancestors of the Voth. It would explain why Voth historical records don’t go back 66 million years: in Voyager they say their recorded history only goes back 20 million years and they were already in the Delta quadrant. They’d have a homeworld, and for whatever reason in the intermediate millions of years evolved naturally, became space faring, lost contact with their home, and evolved into the Voth we see.
Option 4: Already gone - the only other option left that is the least supported by anything in the episode would be that by the events of the episode the Voth were already gone. The hadrosauridae group of organisms arose about 80 million years ago, so it’s possible that in that window the Voth evolved and left and there was no trace even by the time of the events of the episode. This is the least likely to me simply because I don’t feel like Voth could get to space faring levels naturally without leaving serious evidence in the fossil record. While the Martians are a seemingly obvious counter example to this, they did reveal they have the tech to rip chunks of their planet off the surface, so while a stretch, it’d possible Martians simply took what they could of their planet and brought it with them to preserve what they could of their culture, leaving nothing but craters. A naturally evolving Earth based Voth almost certainly would have been globe spanning, so the idea that the evidence of their existence being in some sunken continent seems too far fetched for me. Granted, the franchise isn't exactly above delving into unrealistic writing, but since we haven't been given an answer I'm willing to give them the benefit of the doubt on this.
Am I missing anything? Does anyone else have any theories about them?