''Shimenolepis granifera'' is an extinct
yunnanolepid placoderm from the Late
Llandovery
Llandovery (; cy, Llanymddyfri ) is a market town and community in Carmarthenshire, Wales. It lies on the River Tywi and at the junction of the A40 and A483 roads, about north-east of Carmarthen, north of Swansea and west of Brecon.
Hi ...
of
Li County, Hunan
Li County, or Lixian () is a county in Hunan Province, China, it is under the administration of the prefecture-level city of Changde. The County is located on the north in Hunan Province, it borders to the north by Songzi City and Gong'an Coun ...
, China. It was the first described
Silurian
The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago (Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleozoi ...
placoderm, and is the earliest known placoderm, known from distinctively ordered plates.
Description
Plates
''Shimenolepis'' plates are very similar to the early Devonian
yunnanolepid ''
Zhanjilepis
''Zhanjilepis aspartilis'' is an extinct yunnanolepid placoderm from Pridoli and Lochkovian rocks of Hunan, China. ''Zhanjilepis'' is known only from distinctively ordered plates.
Description
Plates
''Zhanjilepis'' plates are very similar to ...
'', also known from distinctively ornamented plates.
References
Placoderms of Asia
Prehistoric animals of China
Antiarchi
Silurian fish of Asia
{{Placoderm-stub