Zhangmu bed 19 (Devonian of China)

Also known as Reticulariopsis costatus-Nikiforovaena guangxiensis Community

Where: Guangxi, China (22.0° N, 110.0° E: paleocoordinates 5.7° N, 124.6° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Monograptus hercynicus / Neomonograptus falcarius - Neomonograptus fanicus graptolite zone, Beijuntang Formation, Lochkovian (419.2 - 410.8 Ma)

• Late Lochkovian. Between Monograptus hercynicus zone (below) and Neomonograptus fanicus - Neomonograptus falcurius zone (above). PJW: Monograptus hercynicus zone directly precedes the Neomonograptus fanicus zone, so I am putting it at both.

• bed-level stratigraphic resolution

Environment/lithology: marine; black, green, red, yellow mudstone

• "The overall environment is deep water and soft substrate."
• "black, yellowish green and yellowish violet mudstone. Most of the shells are articulated..."

Size class: macrofossils

Collection methods: Numbers of individuals given in Figure 12.3.

Primary reference: Y. Shipu, A. J. Boucot, and C. Wang. 1999. Early Devonian brachiopod and trace fossil communitires from southeastern Guangxi. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities - a case study from the Silurian and Lower Devonian 139-163 [M. Foote/M. Foote/S. Kolbe]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 41058: authorized by Michael Foote, entered by Michael Foote on 06.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Brachiopods only
 Orthotetida - Pulsiidae
 Athyridida - Nucleospiridae
 Spiriferida - Adolfiidae
 Spiriferida - Cyrtiidae
 Spiriferida - Xenomartiniidae
 Spiriferida - Reticulariidae
 Atrypida - Carinatinidae
 Atrypida - Atrypidae
Spinatrypa sp. Stainbrook 1951
Atrypa sp. Dalman 1828
 Atrypida - Atrypinidae
 Orthida - Schizophoriidae
 Orthida - Dalmanellidae
Isorthis sp. Kozlowski 1929
 Orthida - Hesperorthidae