Hamar Laghdad, Fm. Kess-Kess, Emsian and earlist Eifelian brachipods (Devonian to of Morocco)

Where: Morocco (31.4° N, 4.0° W: paleocoordinates 51.4° S, 25.6° E)

• coordinate stated in text

When: Kess-Kess Formation (Saheb el Rhassel Group), Emsian to Emsian (407.6 - 387.7 Ma)

• Emsian and earlist Eifelian (late Early to earlist Middle Devonian)

Environment/lithology: deep subtidal shelf; lithified limestone

• The material collected should enhance interpretation of environment as a mixture of quieter water, with soft bottom (small and smooth shells) and high energy environments (thick shells).
• -About 12 m of limestone were recorded, whereas underlying and overlying strata are dolomitised. This limestone represents inter-mound carbonates.

Size class: macrofossils

Primary reference: A. Halamski and A. Balinski. 2018. Early Dalejan (Emsian) brachiopods from Hamar Laghdad (eastern Anti-Atlas, Morocco). Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 290(1-3):127-152 [W. Kiessling/A. EL Manharawy/A. EL Manharawy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 208094: authorized by Wolfgang Kiessling, entered by Ahmed EL Manharawy on 19.03.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Kyrtartypa cf. balda
Kyrtartypa cf. balda
Largely complete articulated shells (two serially sectioned).
Rhynchonellata
 Spiriferida - Reticulariidae
Reticulariopsis sp.
Reticulariopsis sp.
Four complete to subcomplete articulated shells and sixteen fragmentary specimens
 Spiriferida - Hysterolitidae
Brachyspirifer sp.
Brachyspirifer sp.
Invariably incomplete or fragmentary; only three subcomplete valves and two two incomplete juvenile articulated shells. A single subcomplete adult articulated shell.
 Athyridida -
Athyridida sp.
Athyridida sp. Boucot et al. 1964
incomplete articulated shell
 Athyridida - Meristidae
Camarium sp.
Camarium sp.
Three complete, one subcomplete, the other incomplete or fragmentary.
 Athyridida - Athyrididae
Athyrididae sp.
Athyrididae sp. McCoy 1841
Three articulated shells, two complete, one incomplete.
 Rhynchonellida -
Rhynchonellida sp.
Rhynchonellida sp. Kuhn 1949
Two articulated shells, one incomplete adult and one juvenile shell.
 Rhynchonellida - Trigonirhynchiidae
Stenorhynchia ulrici
Stenorhynchia ulrici
One holotype (subcomplete articulated shell), nine articulated shells( paratypes) and eight fragmentary ones.
 Rhynchonellida - Glossinotoechiidae
Eoglossinotoechia marocanensis
Eoglossinotoechia marocanensis
Four articulated shells, one subcomplete, three other incomplete and juvenie
 Pentamerida - Gypidulidae
Gypidulidae sp., Sieberella sp.
Gypidulidae sp. Schuchert and Le Vene 1929
one complete articulated shell and another one is incomplete articulated shell.
Sieberella sp. Oehlert 1887
mostly incomplete or fragmentary ventral valves.
 Atrypida - Lissatrypidae
Lissatrypa sp.
Lissatrypa sp. Twenhofel 1914
articulated shells