Nemertean worms as adults range from >50 m length for Lineus longissimus (based on length measure of ~half the worm plus calculated length from volume of remaining half, as reported by McIntosh, W. C., 1873-1874. A monograph of the British Annelids. Pt. I: The Nemerteans. The Ray Society, 1873: pp. 1-96, pls. I-X; 1874: pp. 97-214, pls. xi.-xxiii) to 3 mm and less for Ototyphlonemertes parmula (Co...

Is there an equivalent study planned for the extinct oceans giants (C. megalodon, ichthyosaurs, pliosaurs, basal physeteroids...) ?

That Physeter may have reached 24 m actually means it represents the largest marine macrophagous carnivore known to science or were there larger extinct aquatic carnivores ?

Some of the biggest representatives of some phyla lived in the geological past, which are only barely touched upon here. We (Klug et al. 2014) recently tried to summarize the largest marine cephalopods and arthropods living in the Paleozoic: http://onlinelibrary.wiley.com/doi/10.1111/let.12104/full We pointed out the problems of verifying the largest specimens as well as taking into account geogra...

It was published in 1986. Was noted on 10 best lists and can be downloaded as a small PDF here: http://www.davidpetersstudio.com/GIANTS-book.pdf