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Cambrian    音标拼音: [k'æmbriən]
a. 寒武纪的
n. Cambria人,Wales人,寒武纪层

寒武纪的Cambria人,Wales人,寒武纪层

Cambrian
adj 1: of or relating to or characteristic of Wales or its
people or their language; "the Welsh coast"; "Welsh
syntax" [synonym: {Welsh}, {Cambrian}]
n 1: from 544 million to about 500 million years ago; marine
invertebrates [synonym: {Cambrian}, {Cambrian period}]
2: a native or resident of Wales [synonym: {Welshman}, {Welsh},
{Cambrian}, {Cymry}]

Primordial \Pri*mor"di*al\, a. [L. primordialis, from primordium
the first beginning; primus first ordiri to begin a web, to
begin: cf. F. primordial.]
1. First in order; primary; original; of earliest origin; as,
primordial condition. "The primordial facts of our
intelligent nature." --Sir W. Hamilton.
[1913 Webster]

2. (Geol.) Of or pertaining to the lowest beds of the
Silurian age, corresponding to the Acadian and Potsdam
periods in American geology. It is called also {Cambrian},
and by many geologists is separated from the Silurian.
[1913 Webster]

3. (Biol.) Originally or earliest formed in the growth of an
individual or organ; as, a primordial leaf; a primordial
cell.
[1913 Webster]

{Primordial utricle} (Bot.), the interior lining of a young
vegetable cell.
[1913 Webster]


Cambrian \Cam"bri*an\, a.
1. (Geog.) Of or pertaining to Cambria or Wales.
[1913 Webster]

2. (Geol.) Of or pertaining to the lowest subdivision of the
rocks of the Silurian or Molluscan age; -- sometimes
described as inferior to the Silurian. It is named from
its development in Cambria or Wales. See the Diagram under
{Geology}.
[1913 Webster]


Cambrian \Cam"bri*an\, n.
1. A native of Cambria or Wales.
[1913 Webster]

2. (Geol.) The Cambrian formation.
[1913 Webster]


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  • Cambrian - Wikipedia
    Currently the boundaries of the Cambrian System, three series and six stages are defined by global stratotype sections and points [1] The lower boundary of the Cambrian was originally held to represent the first appearance of complex life, represented by trilobites
  • Cambrian Period | Definition, Plants, Animals | Britannica
    Cambrian Period, earliest time division of the Paleozoic Era, extending from 538 8 million to 485 4 million years ago
  • Cambria® Quartz Surfaces
    Family-owned and American-made, Cambria quartz countertops and surfaces combine innovative design and durability for a lifetime of beauty
  • Cambrian Period—541 to 485. 4 MYA - U. S. National Park Service
    The Cambrian Period marks an important point in the history of life on Earth; it is the time when many kinds of invertebrates and the first vertebrates—fishes—appeared in the fossil record
  • The Cambrian Period
    The Cambrian world was bracketed between two ice ages, one during the late Proterozoic and the other during the Ordovician During these ice ages, the decrease in global temperature led to mass extinctions
  • Cambrian Period - National Geographic
    Learn more about a time period marked by an intense burst of evolution The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known The Cambrian
  • Cambrian - New World Encyclopedia
    The Cambrian period is divided into three epochs: The Early Cambrian (also Lower Cambrian, Caerfai, or Waucoban), the Middle Cambrian (St Davids or Albertian), and the Late Cambrian or Furongian (also Upper Cambrian, Merioneth, or Croixan)
  • Cambrian Period: When Life Learned to Experiment - FossilEra
    From insects and mollusks to fish, reptiles, and mammals, the roots of modern life trace back to those shallow Cambrian seas Preserved in layers of shale and limestone, the Cambrian fossil record captures the moment when life stopped merely surviving and began truly evolving
  • Cambrian Period | Natural History Museum
    The Cambrian* Period begins the Phanerozoic Eon, the last 542 million years during which fossils with hard parts have existed It is the first division of the Paleozoic Era (542Ma -251Ma)
  • Plant Evolution Paleobotany - Cambrian
    Possible extinction event at the beginning of the Cambrian Evidence for this extinction event is also found in the carbon excursion used to date the beginning of the Cambrian





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