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2019-10-09 07:10:28.0 [tstevens] Insert Concept
add broader relation (LOWER [db06b2a9-4ed5-4222-8533-fbf3ed3bdc23,369245] - CRETACEOUS
[0d7a2c62-d0b0-4a13-8412-d7cc8d68aeff,336049]);
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2019-10-09 07:17:58.0 [tstevens] Insert Concept
add narrower relation (LOWER [db06b2a9-4ed5-4222-8533-fbf3ed3bdc23,369245] - ALBIAN
[f4da3849-801c-4b51-9403-45ec421dfa03,369273]);
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2019-10-09 07:18:26.0 [tstevens] Insert Concept
add narrower relation (LOWER [db06b2a9-4ed5-4222-8533-fbf3ed3bdc23,369245] - APTIAN
[4542d23f-a390-4e21-a905-79ec5e9c66ec,369277]);
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2019-10-09 07:18:53.0 [tstevens] Insert Concept
add narrower relation (LOWER [db06b2a9-4ed5-4222-8533-fbf3ed3bdc23,369245] - BARREMIAN
[a26a2ddd-4eb0-4aa8-a6db-8b47622b5dbe,369281]);
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2019-10-09 07:19:48.0 [tstevens] Insert Concept
add narrower relation (LOWER [db06b2a9-4ed5-4222-8533-fbf3ed3bdc23,369245] - HAUTERIVIAN
[f270c702-4bc6-45bd-82ee-b8637073c96f,369285]);
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2019-10-09 07:20:57.0 [tstevens] Insert Concept
add narrower relation (LOWER [db06b2a9-4ed5-4222-8533-fbf3ed3bdc23,369245] - VALANGINIAN
[9ff94259-fc2a-4899-b878-736daf6b3f94,369289]);
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2019-10-09 07:21:34.0 [tstevens] Insert Concept
add narrower relation (LOWER [db06b2a9-4ed5-4222-8533-fbf3ed3bdc23,369245] - BERRIASIAN
[9d050d2d-3397-439c-86a5-0e41c3e8dfdc,369293]);
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2019-10-09 09:18:05.0 [tstevens]
insert Definition (id: null
text: The Early Cretaceous (geochronological name) or the Lower Cretaceous (chronostratigraphic
name), is the earlier or lower of the two major divisions of the Cretaceous. It is
usually considered to stretch from 146 Ma to 100 Ma.
During this time many new types of dinosaur appeared or came into prominence, including
ceratopsians, spinosaurids, carcharodontosaurids and coelurosaurs, while survivors
from the Late Jurassic continued to persist.
Angiosperms (flowering plants) appeared for the first time during the Early Cretaceous;
Archaefructaceae, the oldest (124.6 Ma) was found in the Yixian Formation, China.
This time also saw the evolution of the first members of the Neornithes (modern birds).
Sinodelphys, a 125 Ma-old boreosphenidan mammal found in the Yixian Formation, China,
is one of the oldest mammal fossils found. The fossil location indicates early mammals
began to diversify from Asia during the Early Cretaceous. Sinodelphys was more closely
related to metatherians (marsupials) than eutherians (placentals) and had feet adapted
from climbing trees. Steropodon is the oldest monotreme (egg-lying mammal) discovered.
It lived in Gondwana (now Australia) at 105 Ma.
language code: en);
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2019-10-15 08:46:51.0 [tstevens]
update Definition (The Lower Cretaceous is the earlier or lower of the two major divisions
of the Cretaceous. It is usually considered to stretch from 146 Ma to 100 Ma.
During this time many new types of dinosaur appeared or came into prominence, including
ceratopsians, spinosaurids, carcharodontosaurids and coelurosaurs, while survivors
from the Late Jurassic continued to persist.
Angiosperms (flowering plants) appeared for the first time during the Early Cretaceous;
Archaefructaceae, the oldest (124.6 Ma) was found in the Yixian Formation, China.
This time also saw the evolution of the first members of the Neornithes (modern birds).
Sinodelphys, a 125 Ma-old boreosphenidan mammal found in the Yixian Formation, China,
is one of the oldest mammal fossils found. The fossil location indicates early mammals
began to diversify from Asia during the Early Cretaceous. Sinodelphys was more closely
related to metatherians (marsupials) than eutherians (placentals) and had feet adapted
from climbing trees. Steropodon is the oldest monotreme (egg-lying mammal) discovered.
It lived in Gondwana (now Australia) at 105 Ma.);
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2020-01-06 08:00:23.0 [tstevens] Rename Concept
update PrefLabel (EARLY);
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| definition |
The Lower Cretaceous is the earlier or lower of the two major divisions of the Cretaceous.
It is usually considered to stretch from 146 Ma to 100 Ma.
During this time many new types of dinosaur appeared or came into prominence, including
ceratopsians, spinosaurids, carcharodontosaurids and coelurosaurs, while survivors
from the Late Jurassic continued to persist.
Angiosperms (flowering plants) appeared for the first time during the Early Cretaceous;
Archaefructaceae, the oldest (124.6 Ma) was found in the Yixian Formation, China.
This time also saw the evolution of the first members of the Neornithes (modern birds).
Sinodelphys, a 125 Ma-old boreosphenidan mammal found in the Yixian Formation, China,
is one of the oldest mammal fossils found. The fossil location indicates early mammals
began to diversify from Asia during the Early Cretaceous. Sinodelphys was more closely
related to metatherians (marsupials) than eutherians (placentals) and had feet adapted
from climbing trees. Steropodon is the oldest monotreme (egg-lying mammal) discovered.
It lived in Gondwana (now Australia) at 105 Ma.
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