Essays Tagged: "Cambrian"


sea environments for about 250 million years, from the Ordovician into the Permian periods. In the Cambrian, some were prominent in nearshore environments. Since the end of the Paleozoic, clams appea ...

(1 pages) 31 0 4.6 Mar/1997

Subjects: Science Essays > Biology

A Journey Through Evolution - The locomotion and behavioral changes of fishes, reptiles, amphibians, birds and mammals. A good starting place for short biology papers.

s, the human being, a mammal of great intellect came to be. But, it wasnt always that way, from the Cambrian times forward, we have been evolving, species by species, through the ability to physically ... iles, birds, mammals, and finally to human beings.The earth experienced its first vertebrate in the Cambrian times. These vertebrate animals were of two different kinds of fishes, some with jaws and o ...

(8 pages) 91 0 4.1 Apr/2003

Subjects: Science Essays > Biology

The Classification and Evolution of Sponges and Starfish.

Porifera. Both are members of Kingdom Animalia and invertebrates. The relative ages of each are Pre-Cambrian and early Cambrian to Ordovician respectively. Commonalities in physical characteristics an ... .V. Wilson (Wilson, H.V., 1937).Porifera are among the oldest known fossils dating from the late PreCambrian era. They are known to comprise over 900 different types of fossils, and currently have ove ...

(3 pages) 53 0 5.0 May/2003

Subjects: Science Essays > Biology

Operations management as a source of competitive advantage

sational structures and the implementation of technologies aid the building of these advantages.The Cambrian Conservatory and window world is used as an example of efficient operations management.Intr ... e advantage will be discussed with references to organisations that have used these techniques. The Cambrian Conservatory and window world (CCWW), a Swansea based double-glazing company will be the ma ...

(11 pages) 828 0 4.3 Mar/2004

Subjects: Businesss Research Papers > Management

Are The Brachiopods And The Bryozoa Two Of The Most Abundant Species From The Ordovician Period?

groups of the Paleozoic marine organisms (Kazlev, 2002). They first emerged at the beginning of the Cambrian period as the inarticulate brachiopods. During the Ordovician period they expanded in large ...

(4 pages) 28 0 5.0 Mar/2004

Subjects: Science Essays > Biology

Diverse Stromatolites in Washington State (Assigned out of "On Methuselah's Trail")

lex organisms were formed. C.D. Walcott then suggested that the fossils of these animals before the Cambrian Period simply were not able to survive, and labeled this pre-evolutional organism period as ... when algae is covered by a layer of sediment, and sends filaments upward. They flourished in the Precambrian era, but about 800 years ago are believed to have been over eaten by organisms, and left in ...

(3 pages) 30 1 3.0 Mar/2004

Subjects: Science Essays > Biology

The cambrian period

The Cambrian Period marks an important point in the history of life on earth; it is the time when most o ... the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion", because of the relatively short time over which this diversity of forms appears ... this diversity of forms appears.A lot can happen in 40 million years, the approximate length of the Cambrian period. Animals showed dramatic change and diversity during this period of Earth's history. ...

(4 pages) 23 0 5.0 May/2005

Subjects: Science Essays > Earth Sciences > Geology & Geosciences

Mass extinction

ss extinctions. Other smaller extinctions have also been recorded. (Col, 2008; Elredge, 1991)The Precambrian era was a period in earth history before the evolution of hard-bodied and complex organisms ... evolution of hard-bodied and complex organisms. Throughout the extent of both periods, dominant Precambrian and Vendian organisms were soft-bodied, simple, and entirely marine. Diversification of the ...

(6 pages) 31 0 0.0 Nov/2008

Subjects: Science Essays > Biology

Describe the geological & morphological development of the Malham area. How has this affected human utilisation of this landscape over the last 10,000 years?

. His fieldwork took him onto the carboniferous limestone's that form the rim around what he called Cambrian slates (Waltham 2007).About 350 million years ago the geological period began and lasted fo ...

(15 pages) 3 0 0.0 Nov/2012

Subjects: Science Essays > Earth Sciences > Geology & Geosciences


(2 pages) 4 0 0.0 Nov/2014

Subjects: Art Essays > Artists