"the slurpabill will use their" Its.
Is there enough air within the burrow for her and her offspring, even if she's in a state of torpor?
I wonder how many millions of years it takes for eggs to change from froglike to snake-like soft eggs...I'd check myself, but I've been busy lately.
Is there enough air within the burrow for her and her offspring, even if she's in a state of torpor?
I wonder how many millions of years it takes for eggs to change from froglike to snake-like soft eggs...I'd check myself, but I've been busy lately.
| QUOTE (Coolsteph @ Dec 12 2021, 12:42 PM) |
| "the slurpabill will use their" Its. Is there enough air within the burrow for her and her offspring, even if she's in a state of torpor? I wonder how many millions of years it takes for eggs to change from froglike to snake-like soft eggs...I'd check myself, but I've been busy lately. |
Made the grammatical edit
If you don't think so, how should I edit the description?
Well other snappers have transitioned immediately to hard shelled eggs, so I felt like this would be something the species could accomplish. I didn't want it to be another case of ovoviviparity since I already did that with a could other species of thornbacks.
How soft are the eggshells? Are they leathery like snake eggs?
This sourcesource covers soft vs. flexible eggshell types. Snakes usually lay their eggs in damp soil. Is that the case for this one, too?
On a related note, it seems hard-shelled eggs can evolve independently, judging by dinosaursdinosaurs.
The fossil record of hard-shelled eggs goes back at least as far to the early Permian (298.9-272.3 million years ago) but the earliest reptile eggs were likely soft-shelled, but they have little preservation potential. Amniota (reptiles and descendants) originated in the late Carboniferous. (323.2-289.9 million years ago)
As a very rough back-of-the-envelope calculation to calculate the outer bounds of how long would it take to evolve some kind of eggshell: ~25 million years to 33.3 million years.
Wouldn't it make more sense to make a deep tunnel to the den, so that any hot air trickling in will be trapped in the upper layers of the tunnel? Or is it too difficult for something so large to make a long tunnel in soil that is likely sandy?
Polar bears (specifically the females) are the biggest living burrowing animals when they make their maternity dens in snow or earth. (structural referencestructural reference) The maximum size listed of a female polar bear is 2.4 meters, so 1.4 meter animal making a burrow seems plausible.
"beakl" typo.
"horny tip": I recommend "hornlike".
This sourcesource covers soft vs. flexible eggshell types. Snakes usually lay their eggs in damp soil. Is that the case for this one, too?
On a related note, it seems hard-shelled eggs can evolve independently, judging by dinosaursdinosaurs.
The fossil record of hard-shelled eggs goes back at least as far to the early Permian (298.9-272.3 million years ago) but the earliest reptile eggs were likely soft-shelled, but they have little preservation potential. Amniota (reptiles and descendants) originated in the late Carboniferous. (323.2-289.9 million years ago)
As a very rough back-of-the-envelope calculation to calculate the outer bounds of how long would it take to evolve some kind of eggshell: ~25 million years to 33.3 million years.
Wouldn't it make more sense to make a deep tunnel to the den, so that any hot air trickling in will be trapped in the upper layers of the tunnel? Or is it too difficult for something so large to make a long tunnel in soil that is likely sandy?
Polar bears (specifically the females) are the biggest living burrowing animals when they make their maternity dens in snow or earth. (structural referencestructural reference) The maximum size listed of a female polar bear is 2.4 meters, so 1.4 meter animal making a burrow seems plausible.
"beakl" typo.
"horny tip": I recommend "hornlike".
| QUOTE (Coolsteph @ Dec 26 2021, 09:12 PM) |
| How soft are the eggshells? Are they leathery like snake eggs? This sourcesource covers soft vs. flexible eggshell types. Snakes usually lay their eggs in damp soil. Is that the case for this one, too? On a related note, it seems hard-shelled eggs can evolve independently, judging by dinosaursdinosaurs. The fossil record of hard-shelled eggs goes back at least as far to the early Permian (298.9-272.3 million years ago) but the earliest reptile eggs were likely soft-shelled, but they have little preservation potential. Amniota (reptiles and descendants) originated in the late Carboniferous. (323.2-289.9 million years ago) As a very rough back-of-the-envelope calculation to calculate the outer bounds of how long would it take to evolve some kind of eggshell: ~25 million years to 33.3 million years. Wouldn't it make more sense to make a deep tunnel to the den, so that any hot air trickling in will be trapped in the upper layers of the tunnel? Or is it too difficult for something so large to make a long tunnel in soil that is likely sandy? Polar bears (specifically the females) are the biggest living burrowing animals when they make their maternity dens in snow or earth. (structural referencestructural reference) The maximum size listed of a female polar bear is 2.4 meters, so 1.4 meter animal making a burrow seems plausible. "beakl" typo. "horny tip": I recommend "hornlike". |
fixed the grammatical and spelling errors!
Yes the eggs are leathery like snake eggs, and that is indeed the reason WHY I have the females burrow into the earth to lay their eggs and then seal themselves in since it will be cooler underground.
So your saying that even my attempts at having them transition to more durable eggs than just spawn is unrealistic?
Maybe they could make a deep tunnel in the way you described it, if the soil was not so sandy.
This post has been edited by OviraptorFan: Dec 28 2021, 01:30 PM
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