Miliolinella Wiesner 1931

Mamo, Briony L., 2016, Benthic Foraminifera from the Capricorn Group, Great Barrier Reef, Australia, Zootaxa 4215 (1), pp. 1-123 : 52-53

publication ID

https://doi.org/ 10.11646/zootaxa.4215.1.1

publication LSID

lsid:zoobank.org:pub:B91D1782-C11A-4CDC-96B6-76104FEE51BD

DOI

https://doi.org/10.5281/zenodo.6067765

persistent identifier

https://treatment.plazi.org/id/0389064B-FFC9-3D5A-3EEE-E1BFFF1EBAC8

treatment provided by

Plazi

scientific name

Miliolinella Wiesner 1931
status

 

Miliolinella Wiesner 1931 View in CoL

Miliolinella circularis ( Bornemann 1855) View in CoL ( Fig. 11 View FIGURE 11 :12–15)

1855 Triloculina cirularis Bornemann , p. 349, p. 19, fig. 4

1884 Miliolinella circularis (Bornemann) ; Brady, pl. 5, figs 13, 14.

1960 Miliolinella subrotunda (Montagu) ; Barker, p. 10, pl. 5, figs 13, 14. 1993 Miliolinella sp. C; Hottinger et al., p. 53, pl. 40, figs 4, 5.

1994 Triloculinella pilasensis ( McCulloch 1977) View in CoL ; Loeblich & Tappan, p. 57, pl. 99, figs 1–6. 2009 Miliolinella circularis (Bornemann) View in CoL ; Parker, p. 120, fig. 85a–c.

2012 Miliolinella circularis (Bornemann) View in CoL ; Debenay, p. 109, pl.8.

Description. See Hottinger et al. (1993, p. 53, pl. 40, figs 4, 5) and Parker (2009, p. 120, fig. 85a–c).

Remarks. This species is characterised by low, inflated chambers, a circular outline, a broad terminal aperture bordered by a thick peripheral lip and blocked by a large, concave basal flap ( Fig. 11 View FIGURE 11 :12–15).

Miliolinella circularis ( Bornemann 1855) View in CoL has often been described under different names since being established. Brady (1884) originally assigned his Challenger specimens to M. circularis View in CoL , however, according to Jones (1994) these were later re-assigned to Miliolinella subrotunda (Montagu 1803) View in CoL by Wiesner (1923) and Barker (1960) also republished Brady’s (1884) original specimens under this eponym. Thalmann (1932) assigned the specimens to Triloculina subrotunda (Montagu) View in CoL , Hofker (1976) to M. circularis View in CoL and Jones (1994) considers the Challenger specimens M. subrotunda View in CoL . Here, the CG specimens are only synonymised with the specimens on pl. 5, figs 13, 14 of Brady’s (1884) M. circularis View in CoL , not pl. 4. The specimen on pl. 4 (fig. 3, Brady, 1884) appears to bear a slightly produced aperture which sits flat atop the final chamber and the basal flap extends across the aperture, so large only a slit remains open. None of the CG specimens possessed these attributes but rather the final chamber’s aperture curves over the opposing chamber and the basal flap blocks upward, not across the aperture, leaving a larger space ( Fig. 11 View FIGURE 11 :12, 13). Miliolinella View in CoL sp. C of Hottinger et al. (1993) is strikingly similar to the specimens collected from the CG, but Hottinger et al. (1993) also noted a resemblance to Miliolinella laplataensis McCulloch 1977 View in CoL based on its thick, peristomal lip having a slight backward turn. As noted by Parker (2009), Miliolinella heligmateira Loeblich & Tappan 1994 View in CoL also shares a number of similar features with M. circularis View in CoL including a circular outline, peristomal lip and aperture (compare Loeblich & Tappan 1994, pl. 89, figs 12–14 with Fig. 11 View FIGURE 11 :12–15), but has far more compressed chambers than either Parker’s (2009) specimens or those from the CG. Miliolinella heligmateira View in CoL also lacks the distinctively large, concave basal flap that blocks the aperture. Loeblich & Tappan (1994, pl. 99, figs 1–6) figure specimens they assigned to Triloculinella pilasensis ( McCulloch 1977) View in CoL , but have all of the diagnostic features of M. circularis View in CoL including the inflated chambers and distinct aperture basal flap. These specimens are here regarded as synonyms of M. circularis View in CoL .

Miliolinella circularis View in CoL was originally reported by Bornemann (1855) from an Oligocene septarian concretionrich marine clay from Hermsdorf, Germany and has a global distribution ( South Atlantic from 182–274 m—Brady 1884; Gulf of Aqaba—Hottinger et al. 1993; Beagle Gulf—Loeblich & Tappan, 1994; Ningaloo Reef—Parker 2009; New Caledonia down to 20 m—Debenay 2012).

Distribution within study area. Miliolinella circularis was collected from all three One Tree Lagoons with an average of five specimens per site. Site 48 in One Tree Lagoon 3 was the most abundant site for this taxon followed by sites 36 and 43 in One Tree Lagoon 1. This taxon was not collected from Sykes Reef and has very patchy distribution and low abundance (only one to four specimens per site) from Heron Reef flat, Lagoon and Wistari Reef.

Kingdom

Chromista

Phylum

Foraminifera

Class

Tubothalamea

SubClass

Textulariia

Order

Miliolida

SuperFamily

Milioloidea

Family

Hauerinidae

SubFamily

Miliolinellinae

Loc

Miliolinella Wiesner 1931

Mamo, Briony L. 2016
2016
Loc

Miliolinella heligmateira

Loeblich & Tappan 1994
1994
Loc

Triloculinella pilasensis (

McCulloch 1977
1977
Loc

Miliolinella laplataensis

McCulloch 1977
1977
Loc

Triloculinella pilasensis (

McCulloch 1977
1977
Loc

Miliolinella circularis (

Bornemann 1855
1855
Loc

Miliolinella circularis (

Bornemann 1855
1855
Loc

Miliolinella subrotunda

Montagu 1803
1803
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