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This is not correct in the least.

As one of many, many examples, a galapagos turtle reaches sexual maturity at 20 to 25 years of age, and lives 100 to 200 years.

I think barrenko meant "lives after reproductive ability ends", and AFAIK Galapagos tortoises can reproduce at those ages. Certainly the males can, but so can 80yo human males.

Something like that, I take full fault.

I guess we don't have data for Greenland sharks.

thank god.

Perhaps, what you mean, are the only other social mammals with K-population selection reproductive strategy?

FWIW, elephants also fall into this category. It’s theorized that “grandparents” are important cultural archives.

Both orcas and elephants are also matriarchal.

Perhaps you mean among mammalian species? Reptiles can live long lives and experience multiple reproductive cycles. Alligators technically live forever.