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Pikaia is a significant fossil from the Cambrian period, approximately 505 million years ago, notable for being one of the earliest known chordates, which are animals with a backbone. It resembles a primitive fish and exhibits key features such as a notochord, a precursor to the backbone, and a segmented body structure. Pikaia provides crucial insights into the evolution of vertebrates, highlighting the transition from invertebrates to more complex life forms. Its discovery helps scientists understand the early stages of animal evolution and the development of key anatomical features.
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Is the first organism with spine which is an inch and a half long in size?
Pikaia
Is a square a special rectangle or a rectangle a special square?
A square is a special rectangle.
What is a parallelogram a special type of?
A parallellogram is a special type of polygon and a special type of quadrilateral.
What is noun form of special?
The noun form for the adjective special is specialness.The word special is also a noun form, for example:The commuter special stops here at eight and four.Today's special is yesterday's meatloaf.
Are squares a special parallelogram?
yea they are special parolellogram
What is the meaning of th name pikaia?
The Meaning of pikaia means primitive chordate.
Physical characters of pikaia?
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Is the first organism with spine which is an inch and a half long in size?
Pikaia
Was a dinosaur the first Vertebrate?
The first vertebrate was Pikaia, which lived 510 million years ago, 280 million years BEFORE dinosaurs.
What did the pikaia eat?
Pikaia, an early Cambrian organism, likely fed on small organic particles suspended in the water column, such as algae or microscopic organisms. Its feeding strategy was probably similar to that of modern filter-feeding organisms found in marine environments.
Where does a pikaia live?
Pika habitat (for the American pika) is in rocky slopes of mountains called Talus. Pika are found at above or around 10,000 ft elevation. They can be found at lower altitudes further north, however this has to be in cooler locations because it is easy for pika to overheat. They also move to higher grounds when the habit gets warmer.
What is correct a special or an special?
I will go with "a special"
Comparative and superlative forms of special?
Comparative: more special; Superlative: most special.
Is there a Christmas special and a Halloween special of shrek?
Yes. There is a Christmas special and a Halloween special of Shrek.
What is the comparative and superlative of special?
more special, most special
What is special crime?
a special crime investigation is a process of applying special equipment and special expertise; it needs once expertise and a particular special instrument.
How do you say special?
special
