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What is a perfect example of an index fossil?
Short spans of geologic time
Which New York State index fossil may have been present in a rock layer that is missing due to the unconformity?
The trilobite species Eldredgeops rana is a common New York State index fossil found in Devonian rock layers. If a rock layer containing this index fossil is missing due to unconformity, it suggests a gap in the rock record where deposition ceased, erosion occurred, and then new sediment layers were deposited on top.
How old is the rock around a phacops fossil?
The rock around a phacops fossil is typically around 380 million years old, as these fossils are commonly found in rocks from the Devonian period.
Which New York State fossil is found in rocks of the same period of geologic history as Manticoceras?
The New York State fossil that is found in rocks of the same period as Manticoceras is the trilobite genus Eldredgeops. Both Manticoceras, a cephalopod, and Eldredgeops originated during the Devonian period. This period is characterized by a rich diversity of marine life, including various invertebrates. Fossils of both organisms are commonly found in Devonian rock formations in New York.
What evidence implies that overturning may have occurred during the late Devonian?
Fossil evidence from late Devonian rocks show that some groups of marine organisms experienced significant extinction events, which may suggest a period of environmental upheaval. Sedimentary records also indicate abrupt changes in sea levels and climate during this time. The presence of specific isotopic markers in the rock record can further support the theory of overturning during the late Devonian.
Explain why the Devonian Period is commonly called the Age of Fishes?
the Devonian Period is commonly called the Age of Fishes because it was the time where the first boney fishes fossil were discovered
What dinosaur was found in Maine?
No dinosaurs have been found in Maine. The state fossil is Pertica, a plant from the Devonian.
What is the earliest known amphibian fossil?
The earliest known amphibian fossils can be dated back to 375 million years ago. The fossil of Elginerpeton was found in Scotland and was from the Late Devonian period.
What has the author David Hosbrook Dunkle written?
David Hosbrook Dunkle has written: 'A new genus and species of arthrodiran fish from the Upper Devonian Cleveland shale' -- subject(s): Paleontology, Bungartius perissus 'The presumed Holocephalan fish' -- subject(s): Fishes, Fossil, Fossil Fishes, Pseudodontichthys whitei 'A new arthrodiran fish from the Upper Devonian Ohio shales' -- subject(s): Paleontology, Paramylostoma arcualis 'Devonian fishes from California' -- subject(s): Fishes, Fossil, Fossil Fishes, Paleontology 'On one of the least known of the Cleveland shale Arthrodira' -- subject(s): Arthrodira, Fishes, Fossil, Fossil Fishes 'The world of the dinosaurs' -- subject(s): Dinosaurs
What has the author George H Fraunfelter written?
George H. Fraunfelter has written: 'Silicified corals from the Lingle and St. Laurent limestones (Middle Devonian) of southern Illinois and southeastern Missouri' -- subject(s): Geology, Geology, Stratigraphic, Paleontology, Stratigraphic, Stratigraphic Geology, Stratigraphic Paleontology 'Invertebrate megafauna of the Middle Devonian of Missouri' -- subject(s): Fossil Invertebrates, Invertebrates, Fossil, Paleontology 'Some trace fossils from the Clear Creek limestone (Lower Devonian) of southern Illinois' -- subject(s): Trace fossils, Paleontology 'Brachiopods from the Lingle and St. Laurent limestone (Middle Devonian) of southern Illinois and southeastern Missouri' -- subject(s): Brachiopoda, Fossil, Fossil Brachiopoda, Paleontology
What is a perfect example of an index fossil?
Short spans of geologic time
What has the author Gavin C Young written?
Gavin C. Young has written: 'Devonian fish remains from the Dulcie Sandstone and Cravens Peak beds, Georgina Basin, central Australia' -- subject(s): Fossil Fishes, Paleontology 'Crossopterygian fishes from the Devonian of Antarctica' -- subject(s): Fossil Crossopterygii, Paleontology
What has the author Margaret A Bradshaw written?
Margaret A. Bradshaw has written: 'Lower Devonian bivalves from the Reefton Group, New Zealand' -- subject(s): Bivalvia, Fossil, Fossil Bivalvia, Paleontology
What kinds of shells are in the devonian?
The Devonian Period, which is about 417 to 354 million years ago, is in the Paleozoic Era. The most common shell fossils from the Devonian Period are those of Brachiopods, whose shells are symmetrical but unequal in size. Today they are mostly extinct.
Which New York State index fossil may have been present in a rock layer that is missing due to the unconformity?
The trilobite species Eldredgeops rana is a common New York State index fossil found in Devonian rock layers. If a rock layer containing this index fossil is missing due to unconformity, it suggests a gap in the rock record where deposition ceased, erosion occurred, and then new sediment layers were deposited on top.
What is a fossil that looks like a spiral?
Ammonite shells.A fossil that looks like a spiral or a rams horns is called an ammonite. Ammonites is extinct group of marine invertebrate animals that appeared during the Devonian period.
What has the author Victor Voichyshyn written?
Victor Voichyshyn has written: 'The early Devonian armoured agnathans of Podolia, Ukraine =' -- subject(s): Fossil Agnatha, Paleontology
