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• Select Chordates

  1

  Chordates

  Editors:Katherine H. Nemeh and Jacqueline L. LongeFrom:The Gale Encyclopedia of Science (Vol. 2. 6^th ed.)

  2021528 words Topic overview 1250LChordates are a diverse group of animals that comprise the phylum Chordata. The phylum is divided into three subphyla based on general physical characteristics: Urochordata, Cephalochordata, and Vertebrata. Urochordates...
• Select Anglerfish

  2

  Anglerfish

  Editors:Katherine H. Nemeh and Jacqueline L. LongeFrom:The Gale Encyclopedia of Science (Vol. 1. 6^th ed.)

  2021552 words Topic overview 1260LAnglerfish are marine fish that attract prey by dangling a fleshy, bait-like appendage (the esca) in front of their heads. The appendage, which resembles a fishing pole, is attached to the end of the dorsal fin's...
• Select Acorn Worm

  3

  Acorn Worm

  Editors:Katherine H. Nemeh and Jacqueline L. LongeFrom:The Gale Encyclopedia of Science (Vol. 1. 6^th ed.)

  2021239 words Topic overview, Brie... 1160LAcorn worms are marine, worm-like animals, most of which live in sand or mud burrows. Acorn worms are members of the phylum Hemichordata, which includes two classes—the Enteropneusta (the acorn worms) and the...
• Select Herpetology

  4

  Herpetology

  Editors:Katherine H. Nemeh and Jacqueline L. LongeFrom:The Gale Encyclopedia of Science (Vol. 4. 6^th ed.)

  2021552 words Topic overview 1150LHerpetology is the scientific study of amphibians and reptiles. The term “herpetology” is derived from the Greek and refers to the study of creeping things. Birds and mammals, for the most part, have legs that lift their...
• Select Arrowgrass

  5

  Arrowgrass

  Editors:Katherine H. Nemeh and Jacqueline L. LongeFrom:The Gale Encyclopedia of Science (Vol. 1. 6^th ed.)

  2021308 words Topic overview 990LThe arrowgrass family (Juncaginaceae) is a family of herbaceous plants whose grasslike leaves are shaped somewhat like an arrowhead. The arrowgrass family has four genera: Scheuchzeria with two species; Thrighlochin with...
• Select chordates

  6

  chordates

  Editors:E. D. Hirsch, Jr., Joseph F. Kett, and James TrefilFrom:The New Dictionary of Cultural Literacy: What Every American Needs to Know (3^rd ed.)

  200238 words Brief article, Defin... 880LPronunciation: (kawr-dayts, kawr-duhts) Animals that have a central nerve like the human spinal cord. Chordates make up a phylum in the animal kingdom that includes all the vertebrates, along with some primitive...
• Select Heart

  7

  Heart

  Authors:Brenda Wilmoth Lerner and Larry BlaserFrom:The Gale Encyclopedia of Science (Vol. 4. 6^th ed.)

  20213,001 words Topic overview 1320LA heart is a means to circulate blood through the body of an animal. Among the lower species, such as insects, arachnids, and others, the heart may simply be an expanded area in a blood vessel and may occur a number of...
• Select phylum

  8

  phylum

  Editors:E. D. Hirsch, Jr., Joseph F. Kett, and James TrefilFrom:The New Dictionary of Cultural Literacy: What Every American Needs to Know (3^rd ed.)

  200241 words Brief article, Defin... 570LPronunciation: (feye-luhm) plur. phyla One of the major divisions of the kingdoms of living things; the second-largest standard unit of biological classification. The arthropods, chordates, and mollusks are phyla....
• Select Paleontology

  9

  Paleontology

  Author:Kathryn M. C. evansFrom:The Gale Encyclopedia of Science (Vol. 6. 6^th ed.)

  20212,662 words Topic overview 1120LPaleontology is the study of ancient animal life and how it developed. It is divided into two subdisciplines, invertebrate paleontology and vertebrate paleontology. Paleontologists use two lines of evidence to learn...
• Select Linnean classification

  10

  Linnean classification

  Editors:E. D. Hirsch, Jr., Joseph F. Kett, and James TrefilFrom:The New Dictionary of Cultural Literacy: What Every American Needs to Know (3^rd ed.)

  2002309 words Brief article, Defin... 1210LA way of organizing living things. In biology, plants and animals have traditionally been classified by the structure of their bodies, in a descending hierarchy of categories: kingdom, phylum, class, order, family,...
• Select fish

  11

  fish

  Author:Robert A. DanielsFrom:Encyclopedia of New York State

  2005954 words Article New York State claims representatives from 3 classes, 33 orders, and 123 families of these chordates, characterized by possession of a cranium, medial fins, and gills, and with most also possessing paired fins and...