FAMILY TRIPLOPORELLACEAE

TRIBE SALPINGOPORELLEAE

SUB-TRIBE SALPINGOPORELLINAE

GENUS Griphoporella [PIA 1915] BARATTOLO et alii 1991

SPECIES Griphoporella bechstaedti PARENTE et CLIMACO 1999

(by M. Parente)

1. Synonymy list

1999 Griphoporella bechstädti n. sp.- Parente & Climaco, Pl. 36, fig. 1-12

2. Types

holotype: Pl. 36, fig. 1, thin section N° AC354.4 ; isotypes : Pl. 36, fig. 2, thin section N° AC565.1 ; Pl. 36, fig. 3, thin section N° AC345.15 ; Pl. 36, fig. 4 & 6, thin section N° AC565.6 ; Pl. 36, fig. 5, thin section N° AC345.7 ; Pl. 36, fig. 7, thin section N° AC565.2 ; Pl. 36, fig. 8, 10 & 12, thin section N° AC345.7 ; Pl. 36, fig. 9, thin section N° AC560 ; Pl. 36, fig. 11, thin section N° AC565.5, V. Zamparelli Collection, Dipartimento di Scienze della Terra, Università di Napoli "Federico II" (Italy)

type locality: Mte Rotonda, E Maratea, Basilicata (Italy) 

stratum typicum: Upper Triassic, Norian

3. Diagnosis

original diagnosis (Parente & Climaco, 1999): « Calcareous skeleton cylindrical, simple, not articulated. Primary laterals only, arranged in close whorls. Laterals elongated and distinctly inclined upward, consisting of a thin proximal part followed by a swollen portion that pinches out distally and finally opens outward with a cup-like swelling. Reproductive organs unknown; probably cladospore and located in the swollen part of the laterals. »

4. Description

original description (Parente & Climaco, 1999): « General characters of the calcareous skeleton. The calcareous skeleton of Griphoporella bechstädti n. sp. is cylindrical, simple, not articulated. Both the outer and the inner surface of the skeleton are severely micritized in most of our specimens. The central cavity is rather wide (d/D = 0.41-0.64) but we suppose that the inner wall of the calcareous skeleton was not far from the central stem wall because the laterals emerge from the central cavity as very thin pores. Therefore in this species the diameter of the central cavity seemingly corresponds to the central stem diameter. Its value (d) is 350-700 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m (481 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">± > 82 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m). The outer diameter of the calcareous skeleton is 800-1250 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m (948 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">± > 120 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m). The thickness of the calcareous skeleton (e) is 175-338 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m (233 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">± > 39 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m) (Tab.4).

lang="EN-GB" >The laterals. Griphoporella bechstädti style="mso-bidi-font-family:Arial; color:black"> n. sp is characterised by primary laterals only. They are inclined with 10°-30° upwards but very often bend downwards in their distal part (Pl. 35/2, 3, 8, 10). The laterals were most probably arranged in simple whorls but this pattern is somewhat obscured because the laterals of a whorl may have slightly different inclinations. The number of laterals per whorl (w) is 20-30 (26 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">± > 4). The distance between whorls (h) is 100-160 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m (129 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">± > 22 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m).

style="mso-bidi-font-family:Arial; color:black">The laterals are elongated. They have a thin proximal part followed by a swollen portion that pinches out distally and finally open outwards. The width of the proximal part of the laterals (p_min) is 20-30 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m (22 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">± > 4 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m). The maximum width of the swollen part of the laterals (p_max) is 40-80 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m (64 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">± > 11 style="mso-char-type: symbol; mso-symbol-font-family: Symbol; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; color: black" lang="EN-GB">m >m) (Tab.4).

style="mso-bidi-font-family:Arial; color:black">In most of our specimens the outer surface of the calcareous skeleton is characterised by wide and irregular indentations. These probably correspond to cup-like terminal widenings of the laterals but the severe micritization hampers a more precise definition of their shape. Reproductive organs.We have not observed any reproductive structure in Griphoporella bechstädti n. sp. This species was probably characterised by uncalcified cladospore reproductive organs seemingly located in the swollen part of the laterals. »

Measurements (see above)

5. Remarks

6. Stratigraphic range

> Norian (Parente & Climaco, 1999)

7. Real distribution

Italy ( >Parente & Climaco, 1999)

8. Paleoecology