stoneman noun
1: a compositor who imposes set type on a stone and locks it up in a chase
2 a: a man working in stone
b: one who drives stoneheads
3: stonemason [MWUD]
For we constantly deal with practical problems, with moulders, contractors, derricks, stonemen, trucks, rubbish, plasterers, and what-not-else, all the while trying to soar into the blue.
— Augustus Saint-Gaudens
David McCullough, The greater journey : Americans in Paris, Simon & Schuster, 2011
chelonian
n 1) any reptile of the order Chelonia, including the tortoises and turtles, in which most of the body is enclosed in a protective bony capsule
adj 2) of, relating to, belonging to, or characteristic of the Chelonia
Etymology: C19 from New Latin Chelōnia, from Greek khelōnē tortoise [CED]
Chelonians
The order of the testudines differentiated itself from the rest of the reptile world during the Triassic Period. Today it comprises marine turtles and terrestrial turtles. The species of this order are unique. They are covered with shells that consist of a dorsal carapace and a ventral plastron. These shells are so much a part of these animals that their thoracic vertebrae and ribs are included in them. Since these rigid shells do not allow turtles to expand their chests to breathe, these animals use their abdominal and pectoral muscles like diaphragms.Reptiles and Dinosaurs, Britannica Illustrated Science Library, 2008.
carapace （カメなどの）背甲
plastron （カメなどの）腹甲
Turtles, like frogs, cannot be mistaken for any other animal (Fig. 1.3). The body is encased within upper and lower bony shells (carapace and plastron, respectively). In some species, the upper and lower shells fit tightly together, completely protecting the limbs and head. Although turtles are only moderately speciose, they are ecologically diverse, with some fully aquatic (except for egg deposition) and others fully terrestrial. Some are tiny in size whereas others are gigantic, and some are herbivores and others are carnivores.
Laurie J. Vitt and Janalee P. Caldwell, Herpetology : An Introductory Biology of Amphibians and Reptiles, 3rd ed., Academic Press, 2009, p.4.
A prodigious debt of gratitude goes to [[proper names]. Thanks also to the following friends, family, and colleagues who suggested words for inclusion in this book: [proper names].
Robert W. Bly, Words You Should Know to Sound Smart : 1200 essential words every sophisticated person should be able to use, Adams Media, 2009.
herpetology n.
a branch of zoology dealing with reptiles and amphibians
Etymology : Greek herpeton quadruped, reptile, from neuter of herpetos crawling, from herpein
Date : 1824 [MWCD]
Herpetology is the branch of zoology concerned with the study of amphibians (including frogs, toads, salamanders, newts, and gymnophiona) and reptiles (including snakes, lizards, amphisbaenids, turtles, terrapins, tortoises, crocodilians, and the tuataras). Batrachology is a further subdiscipline of herpetology concerned with the study of amphibians alone. […] The word “herpetology” is from Greek: ἑρπετόν, herpeton, “creeping animal” and -λογία, -logia. People with an avid interest in herpetology and who keep different reptiles or amphibians often refer to themselves as “herpers”. [Wikipedia: Herpetology]