Comment on "Bilaterian burrows and grazing behavior at >585 million years ago".
نویسندگان
چکیده
Pecoits et al. (Reports, 29 June 2012, p. 1693) describe bilaterian trace fossils and assign them an Ediacaran age based on the age of a granite interpreted as intrusive. We argue that the granite is not intrusive but in fact represents the basement of the sedimentary succession. Moreover, we show that identical trace fossils occur in nearby Carboniferous-Permian glacigenic rocks.
منابع مشابه
Response to comment on "Bilaterian burrows and grazing behavior at >585 million years ago".
Gaucher et al. suggest that their field observations and petrographic analysis of one thin section do not support an Ediacaran age for the trace fossils-bearing strata of the Tacuarí Formation. We have strengthened our conclusion of an Ediacaran age for the Tacuarí Formation based on reassessment of new and previously presented field and petrographic evidence.
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ورودعنوان ژورنال:
- Science
دوره 339 6122 شماره
صفحات -
تاریخ انتشار 2012