New species of the genus Thrissops (Teleostei, Ichthyodectiformes) in the Upper Jurassic of the Solnhofen-Archipelago (Germany) and Kimmeridge Clay (England) Author Ebert, Martin 0000-0002-0732-7706 Spindeltal 12, 85072 Eichstätt, Germany text Zitteliana 2025 2025-07-25 99 1 32 journal article 311306 10.3897/zitteliana.99.159055 c12233cd-7f3b-4170-9007-b83647222721 56F0851A-2905-49A1-96CC-232BC6868976

Table 1. Features to distinguish the different taxa of Upper Jurassic Ichthyodectiformes (updated from Ebert and Kölbl-Ebert 2013; individual specimens see Suppl. material 1: table S 1).

Species name	Locality	max. SL cm	SL / BD %	SN	AP	TV	AV	CV	UD	Ribs	Teeth
Abbreviation of features: AP, number of anal pterygiophores; AV, number of abdominal vertebrae; CV, number of caudal vertebrae, max. SL, maximal standard length (cm); Ribs, number of abdominal ribs; SL / BD, standard length in relationship to body depth; SN, number of supraneurals; Teeth, size of teeth; TV, number of total vertebrae (without ural centra); UD, number of urodermals. Abbreviation of localities: Br, Brunn; Ei, Eichstätt; Et, Ettling; Ke, Kelheim; Pa, Painten; So, Solnhofen; Za, Zandt.
Thrissops formosus	Br, Ei, Et, Ke, Pa, So	43	20-26	37-40	28-31	57-60	32-34	25-26	1	28-31	small
Th. formosus	Cerin	~ 67	16-25	39-40	30-31	59-61	32-36	25-26	?	31 - 32	small
Th. cf. formosus	Wattendorf	~ 50	24	41	30	59	35	24	?	32	small
Th. subovatus	Ei, Et, Ke, Pa, So, Za	35	26-29	38-40	29-32	59-60	33-34	26-27	1	30-31	large
Th. ettlingensis	Ettling	13	26-33	30-31	23-25	49-50	26-27	23-24	1	24-25	small
Th. cirinensis	Cerin	18.5	36	32	27	52	28	24	?	24	large
Th. curtus	Isle of Portland	13	29	?	26	52 or 53	28 or 29	~ 24	?	22	small
Th. kimmeridgensis	Kimmeridge	~ 75.5	22-27	?	29 - 30	~ 55 - 57	?	?	?	~ 25-28	small
Allothrissops mesogaster	Ei, So	25	15-23	?	24 - 26 max 25	58-59	33-34	25-26	1	28-30	small
A. salmoneus	Ei, So	31.5	17-18	?	27 - 30	59-60	33	26-27	?	30 - 31	small
A. regleyi	Cerin	23	19-27	~ 32	29-31	52-54	28-30	23-25	2?	24-25	small
Allothrissops sp.	Kelheim	19.5	18-23	?	25 - 27	56-57	31-32	25	?	26-29	small
Allothrissops sp.	Zandt	28	15-19	?	27 - 28	59-60	33-35	26	?	31	small
Allothrissops sp.	Ettling	23	17-19	~ 32	27-28	57-58	32	25-26	2	29	small
Occithrissops willsoni	Wyoming USA	~ 20	22-23		18-20	56	33-34	22-23			small