A morphometric approach to conch ontogeny of Cymaclymenia and related genera (Ammonoidea, Late Devonian) Author Klein, C. Author Korn, D. text Fossil Record 2014 2014-02-20 17 1 1 32 http://dx.doi.org/10.5194/fr-17-1-2014 journal article 294427 10.5194/fr-17-1-2014 803f61fd-e54c-4638-93fc-149cee5d1f28 2193-0074 10965299

Table 8. Conch ontogeny of Postclymenia calceola n. sp. from the Anti-Atlas of Morocco.

dm	Conch shape	Whorl cross-section shape	Whorl expansion
2 mm	thinly discoidal; subevolute	weakly depressed or weakly compressed;	moderate
	(ww / dm = 0.30–0.35; uw / dm = 0.40–0.42)	weakly embracing	(WER = 1.90–2.00)
		(ww / wh = 0.90–1.10; IZR = 0.10–0.15)
6 mm	thinly discoidal; subevolute	weakly compressed; weakly embracing	moderate
	(ww / dm = 0.30–0.35; uw / dm = 0.40–0.45)	(ww / wh = 0.90–1.00; IZR = 0.15–0.20)	(WER = 1.90–2.00)
15 mm	thinly discoidal; subevolute	weakly depressed or weakly compressed;	moderate
	(ww / dm = 0.30–0.35; uw / dm = 0.38–0.42)	weakly embracing	(WER = 1.90–2.00)
		(ww / wh = 0.80–0.90; IZR = 0.20–0.25)
40 mm	thinly discoidal; subevolute	weakly depressed or weakly compressed;	high
	(ww / dm = 0.25–0.30; uw / dm = 0.30–0.35)	weakly embracing	(WER = 2.00–2.10)
		(ww / wh = 0.70–0.75; IZR = 0.25)