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Henry Alleyne Nicholson
This eBook from the Gutenberg Project consists of approximately 391 pages of information about The Ancient Life History of the Earth.
  Ant-eaters, Armadillos (Edentata); Manatees and Dugongs
  (Sirenia); Whales, Dolphins, Porpoises (Cetacea);
  Rhinoceros, Tapir, Horses, Hippopotamus, Pigs, Camels and
  Llamas, Giraffes, Deer, Antelopes, Sheep, Goats, Oxen
  (Ungulata); Hyrax (Hyracoidea**); Elephants,
  Mastodon,* Deinotherium* (Proboscidea); Seals,
  Walrus, Bears, Dogs, Wolves, Cats, Lions, Tigers, &c.
  (Carnivora); Hares, Rabbits, Porcupines, Beavers,
  Rats, Mice, Lemmings, Squirrels, Marmots, &c. (Rodentia);
  Bats (Cheiroptera); Moles, Shrew-mice, Hedgehogs
  (Insectivora); Lemurs, Spider-monkeys, Macaques,
  Baboons, Apes (Quadrumana); Man (Bimana).


ABDOMEN (Lat. abdo, I conceal).  The posterior cavity of the body, containing the intestines and others of the viscera.  In many Invertebrates there is no separation of the body-cavity into thorax and abdomen, and it is only in the higher Annulosa that a distinct abdomen can be said to exist.

ABERRANT (Lat. aberro, I wander away).  Departing from the regular type.

ABNORMAL (Lat. ab, from; norma, a rule).  Irregular; deviating from the ordinary standard.

ACRODUS (Gr. akros, high; odous, tooth).  A genus of the Cestraciont fishes, so called from the elevated teeth.

ACROGENS (Gr. akros, high; gennao, I produce).  Plants which increase in height by additions made to the summit of the stem by the union of the bases of the leaves.

ACROTRETA (Gr. akros, high; tretos, pierced).  A genus of Brachiopods, so called from the presence of a foramen at the summit of the shell.

ACTINOCRINUS (Gr. aktin, a ray; krinon, a lily).  A genus of Crinoids.

ACTINOZOA (Gr. aktin, a ray; and zooen, an animal).  That division of the Coelenterata of which the Sea-anemones may be taken as the type.

AEGLINA (AEgle, a sea-nymph).  A genus of Trilobites.

AEPIORNIS (Gr. aipus, huge; ornis, bird).  A genus of gigantic
Cursorial birds.

AGNOSTUS (Gr. a, not; gignosko, I know).  A genus of Trilobites.

ALCES (Lat. alces, elk).  The European Elk or Moose.

ALECTO (the proper name of one of the Furies).  A genus of Polyzoa.

ALETHOPTERIS (Gr. alethes, true; pteris, fern).  A genus of

ALGAE. (Lat. alga, a marine plant).  The order of plants comprising the Sea-weeds and many fresh-water plants.

ALVEOLUS (Lat. alvus, belly).  Applied to the sockets of the teeth.

AMBLYPTERUS (Gr. amblus, blunt; pteron, fin).  An order of
Ganoid Fishes.

AMBONYCHIA (Gr. ambon, a boss; onux, claw).  A genus of Palaeozoic

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