Where: Netherlands (50.8° N, 5.9° E: paleocoordinates 1.5° S, 13.0° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Alportian to Alportian (322.8 - 321.3 Ma)

• According to Pruvost (1927: 76), the isolated mesothoracic wing comes from a marine horizon in the transition beds between the zone of Reticuloceras reticulatum (Phillips, 1836) and the so-called "Ampelites de Chokier (H1a)" and is associated with ammonoids. Today the H1 a subzone - characterized by Isohomoceras subglobosum - is allocated to the Lower Chokierian and thus to the earliest Upper Carboniferous; R. reticulatum is the index ammonoid of the higher Kinderscoutian (R1 c1). After Oorsman (1945: 67 and 68), in the Gulpen boring no. 106 I. subglobosum occurs at the depth of -310m and thus at least 65 m below the stratum typicum of Ampeliptera limburgica, whereas the first occurrence of R. reticulatum at -200 m is distinctly (at least 45 m) above it. In consideration of the fact that generally the sediment thickness is greately increasing since the Kinderscoutian, the age of Ampeliptera limburgica can be approximately restricted to the Alportian (Late Namurian A) or Early Kinderscoutian (Early Namurian B). Most probably Alportian according to Brauckmann et al., 1996.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Musee du Geologisch Bureau voor het Nederlandsch Mijngebied, Heerlen

Primary reference: P. Pruvost. 1927. Sur une aile d’insecte trouvée au sondage de Gulpen. Jaarverslag van der Geologische Bureau voor het Nederlandsche Mijngebied to Heerlen 1926:76-77 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 137302: authorized by Matthew Clapham, entered by Jered Karr on 14.12.2012

Creative Commons license: CC BY (attribution)