Zadelsdorfia zana, Korn & Weyer, 2023

Korn, Dieter & Weyer, Dieter, 2023, The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany), European Journal of Taxonomy 882, pp. 1-230 : 144-145

publication ID

https://doi.org/ 10.5852/ejt.2023.882.2177

publication LSID

lsid:zoobank.org:pub:67C909E4-C700-4F8D-B8CE-5FD9B2C5D549

DOI

https://doi.org/10.5281/zenodo.8184474

persistent identifier

https://treatment.plazi.org/id/8ABDDAC1-F889-4E3B-8F43-00DCB44E17CA

taxon LSID

lsid:zoobank.org:act:8ABDDAC1-F889-4E3B-8F43-00DCB44E17CA

treatment provided by

Felipe

scientific name

Zadelsdorfia zana
status

sp. nov.

Zadelsdorfia zana sp. nov.

urn:lsid:zoobank.org:act:8ABDDAC1-F889-4E3B-8F43-00DCB44E17CA

Tables 81–82 View Table 81 View Table 82

Gattendorfia crassa View in CoL – Bockwinkel & Ebbighausen 2006: 109, text-figs 26, 27g –j.

Diagnosis

Species of Zadelsdorfia with a thickly discoidal, very evolute conch at 5 mm dm (ww/dm ~0.50; uw/ dm ~0.62); conch at 15 mm dm thinly pachyconic, subevolute (ww/dm ~0.65; uw/dm ~0.35). Whorl profile in the juvenile stage crescent-shaped, at 20 mm dm weakly depressed (ww/wh ~1.45); coiling rate moderately high (WER ~1.85). Venter broadly rounded throughout ontogeny, umbilical margin narrowly rounded in the adult stage. Weak constrictions with concavo-convex course. Suture line with lanceolate, weakly pouched external lobe and lanceolate adventive lobe.

Etymology

Acronym for a Zadelsdorfia species from North Africa.

Material examined

Holotype

MOROCCO • Anti-Atlas, Mfis near Taouz , bed 7; Becker Coll.; illustrated byBockwinkel & Ebbighausen (2006: text-fig. 27g –h); MB.C.3832.2.

Paratypes

MOROCCO • 7 specimens; Anti-Atlas , Mfis near Taouz , bed 7; Bockwinkel & Ebbighausen Coll.; MB.C.3832.1, MB.C.3832.3 –8 .

Description

The species newly described here has been worked on in detail by Bockwinkel & Ebbighausen (2006), so reference can be made here to that description.

Remarks

Zadelsdorfia zana sp. nov. resembles Z. crassa , but the ontogenetic transition from the initial serpenticonic stage to the more involute subadult stage occurs at a smaller diameter of the conch (uw/ dm ~0.25 at 20 mm dm) compared to Z. crassa (uw/dm = 0.35–0.45 at 20 mm dm). In addition, G. zana has constrictions, which are straight on the flank, whereas in Z. crassa they are directed backwards.

Kingdom

Animalia

Phylum

Mollusca

Class

Cephalopoda

Order

Goniatitida

SubOrder

Tornoceratina

SuperFamily

Prionoceratoidea

Family

Gattendorfiidae

SubFamily

Gattendorfiinae

Genus

Zadelsdorfia

Loc

Zadelsdorfia zana

Korn, Dieter & Weyer, Dieter 2023
2023
Loc

Gattendorfia crassa

Bockwinkel J. & Ebbighausen V. 2006: 109
2006
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF