Assertion: eurypterid | /r/HasProperty | marine
Facets:
value: primarily
type: DEGREE
value: normally
type: DEGREE
value: originally
type: OTHER
value: according to this view
type: OTHER
value: doubtless
type: DEGREE
value: occasionally
type: DEGREE
Source sentences:
text: Although popularly called "sea scorpions", only the earliest eurypterids were marine; many later forms lived in brackish or fresh water, and they were not true scorpions.
text: Erde und des Lebens has accepted the statement of several American geologists that the eurypterids were marine organisms saying that they lived in sea-water of normal salinity "as the section in North America proves with certainty" (294, 251).
text: In these deposits the eurypterids often appear without any marine associates, while occasionally there are some marine or at least brackish water forms associated with them, implying either that they lived in brackish or salt water at times, or that their remains were carried out into such waters by the land streams or estuarine currents" (33, 412).
text: Chamberlin, recalling that fishes and eurypterids are found both earlier and later than the Devonic in marine deposits, puts the following question: "Were the fishes and eurypterids primarily marine and later became adapted to fresh water, or were they primarily fresh water forms which were occasionally carried out to sea and which later became adapted to salt water?"
text: The eurypterids, according to this view, were marine, forms caught in a gulf of not too great salinity.
text: Clarke still held to his former opinion that "the few eurypterids we know were doubtless marine, and the creatures gradually acquired the brackish-water habit at their climax, which seems to have eventually changed to a fresh-water life" (37, 280).
text: Thus while the earlier eurypterids were marine and their climacteric fauna euryhaline; their later habit throughout the Devonic and Carbonic led them finally into the fresh water.
text: In this case as in many another the question must be raised: Why if the eurypterids were marine were they the only organisms which were carried in from the open sea?
text: Although popularly called "sea scorpions", only the earliest eurypterids were marine; many later forms lived in brackish or fresh water, and they were not true scorpions.
text: : Were the fishes and eurypterids primarily marine and later became adapted to fresh water, or were they primarily fresh-water forms which were occasionally carried out to sea, and which later became adapted to salt water?
text: Thus while the earlier eurypterids were marine and their climacteric fauna euryhaline; their later habit throughout the Devonic and Carbonic led them finally into the fresh water.
text: These five facts seem to be difficult of explanation if it be supposed that the eurypterids were marine organisms.
text: The author proposes to formulate a few of the principles which must be borne in mind in considering such a problem, and to point out the inconsistency in the lines of argument generally given to prove that the eurypterids were originally marine organisms.
text: When the significance of the distribution and of the occurrence of the eurypterids is given its full importance, there can no longer be any doubt that the eurypterids at no time of their known history were normally marine organisms.