Pattersoncypris angulata ( Krömmelbein & Weber, 1971 )

Tomé, Maria Emilia, Araripe, Rilda, Oliveira, David, Barreto, Alcina, Prado, Ludmila, Pedrosa, Flavia, Pereira, Priscilla, Nascimento, Luiz Ricardo & Ng, Christiano, 2022, Early Cretaceous Ostracoda (Crustacea) from south-centralAraripe Basin, Brazil with descriptions of seven new species, Zootaxa 5159 (4), pp. 535-557 : 539

publication ID	https://doi.org/ 10.11646/zootaxa.5159.4.4
publication LSID	lsid:zoobank.org:pub:D3D2D54E-4B22-45FC-9904-FBB8BEF2E601
DOI	https://doi.org/10.5281/zenodo.6786037
persistent identifier	https://treatment.plazi.org/id/31296775-CE7D-FFF2-86B7-FC119A56FEDD
treatment provided by	Plazi
scientific name	Pattersoncypris angulata ( Krömmelbein & Weber, 1971 )
status

Treatment

Pattersoncypris angulata ( Krömmelbein & Weber, 1971) View in CoL

Fig. 3D–F View FIGURE 3

1966 Paraschuleridea sp. 5 —Braun, p. 66–67, fig. 1, 2a–b.

1971 Hourcqia angulata angulata —Krömmelbein & Weber, p. 20, plate 6, fig. 23a–c.

1989 Hourcqia angulata angulata —Viana et al., p. 216, fig. 2a–c.

1990 Hourcqia angulata angulata —Silva Telles Jr. & Viana, plate 3, fig. 3.

1990 Hourcqia angulata angulata —Dépêche et al., plate 3, figs.17–18.

2002 Pattersoncypris angulata angulata — Coimbra et al., p. 691, fig. 4, nº 29.

2006 Harbinia angulata —Ramos et al., p. 344, fig. 4E–H.

2008 Harbinia angulata —Do Carmo et al., p. 795, fig. 6, nº 11.

2010 Pattersoncypris angulata — Tomé & Lima Filho, p. 62, plate. 1 (d–f).

2012a Kroemmelbeincypris angulata —Poropat & Colin, p. 708, fig. 4, nº 4 and 5.

2022 Pattersoncypris angulata —Araripe et al., p. 7, fig. 5 (14a–b).

Illustrated material. Adult shell, Nº. DGEO-CTG-UFPE-1507. Illustrated material from the Santo Antônio section (2.65 m).

Dimension. Nº. DGEO-CTG-UFPE-1507 ( Fig. 3D–F View FIGURE 3 ); L= (LV) 0.917/ ( RV) 1.197 mm, H= 0.571 mm, and W= 0.729 mm.

Comparison. Material compared to Pattersoncypris angulata (Nº. DGEO-CTG-UFPE-1963), described and deposited by Tomé et al. (2014) in the Ivan de Medeiros Tinoco Microfossils Collection from Paleontology Laboratory of the Federal University of Pernambuco. The comparison was satisfactory, due to the posterodorsal angle being well marked, however, the species found in the collection is smooth with no surface ornamentation .

Occurrence and associated fauna. It was recorded in the Santo Antonio section, at the following depths (from base to top): 1.8; 2.1; 2.25; 3.1; 3.4; 3.85; 5.25 and 5.35 m. P. salitrensis is associated with all species of ostracods, except Dicrorygma ( Orthorygma ?) dimorpha.

Observations. Among the forms belonging to the genus Pattersoncypris found in the interval corresponding to the Aptian-Albian, in the Romualdo Formation, Pattersoncypris angulata presents a well-marked angle at the posterodorsal end, which helps its identification. This species can be smooth or with a tessellated ornamentation on the surface.

Stratigraphic distribution. Brazil, Araripe Basin, Santana Formation, Romualdo Member (Silva Telles Jr. & Viana, 1990; Poropat & Colin, 2012b), range dated as Aptian ( Regali 1990; Coimbra et al. 2002). Potiguar Basin, Alagamar Formation, Aptian ( Do Carmo et al. 2008). Cedro Basin, Crato Formation, range dated as Aptian (Tomé 2007; Tomé & Lima Filho 2010). Jatobá Basin, Serra Negra, in strata correlated to the Crato Formation, upper Aptian ( Tomé et al. 2014). In the present study, found in the Araripe Basin, Romualdo Formation, upper Aptian.