Neue Dekapoden-Reste aus der Oberkreide von Moçambique, Norddeutschland und den bayerischen Alpen

Paleobiogeography of Southern Hemisphere Decapod Crustacea

“…This genus has been recognized in Argentina at midlatitudes (Aguirre-Urreta and Ramos, 1981) as well as the high latitude sites of Antarctica (Taylor, 1979) and Australia (Etheridge, 1914). These genera, as well as Enoploclytia McCoy, 1849, known from Argentina (Aguirre-Urreta, 1982) and Antarctica (Taylor, 1979); Meyeria McCoy, 1849, from Argentina (Harbourt, 1905) and Madagascar (Kitchin, 1908); Paranecrocarcinus Forster, 1968, from South Africa (Wright, 1997) and Madagascar (Forster, 1970); and Astacodes Bell, 1863, from Australia (Woods, 1957), are all taxa whose first occurrences are in the Northern Hemisphere. The pathways of dispersal are not clear but parsimonious pathways are suggested ( Fig.…”

The oldest frog crabs (Decapoda: Brachyura: Raninoida) from the Aptian of northern South America

“…The configuration of the protogastric tubercles, with a small node anterior to the other tubercles and posterior to the orbital region, near the protogastric/hepatic boundary (Fig. 3A-B), is also visible on other necrocarcinid species such as Necrocarcinus labeschei, N. pierrensis Rathbun, 1917, N. davisi Bishop, 1985, and N. rathbunae Roberts, 1962(Rathbun, 1917Förster, 1970;Bishop, 1985;Bishop and Williams, 1991;Guinot et al, 2008). Necrocarcinus undecimtuberculatus (Fig.…”

“…Planocarcinus shares with Necrocarcinus Bell, 1863, and its type species Necrocarcinus labeschei (Eudes-Deslongchamps, 1835) (Fig. 3D), the generally circular carapace nearly as wide as long, bearing complete and somewhat parallel cervical and branchiocardiac grooves, the relatively small, round, and upturned orbits directed forward, provided with two orbital fissures and small orbital spines (Bell, 1858;Carter, 1898;Förster, 1968;Wright and Collins, 1972;Schweitzer et al, 2003). Such similarities suggest affinity to Necrocarcinus, as previously noticed by Feldmann et al (1999).…”

“…Planocarcinus olssoni, together with Necrocarcinus inornatus Breton and Collins, 2011, from the lower Cenoma-nian of France, and Paranecrocarcinus libanoticus Förster, 1968, from the Cenomanian of Lebanon and France (Breton and Collins, 2011), are the least ornamented necrocarcinids. Planocarcinus olssoni differs from both taxa in lacking a vaulted carapace bearing faint dorsal grooves, the absence of well-developed protuberances along the axial ridge, the narrower metagastric and urogastric regions, and the posterolateral margin deprived of granules.…”

“…1A), 2) Palaeocorystidae allied with the 'raninid-like' families based on the shape of the carapace and the lack of pleonal locking mechanisms (Karasawa et al, 2011) (Fig. 1B), or 3) an unresolved polytomy within Palaeocorystidae, whereby the common ancestor of Raninidae/Symethidae might lie within Palaeocorystidae 'pro parte,' but the most basal palaeocorystids (Notopocorystes McCoy, 1849) lying in proximity to, and possibly derived from, the clade of Cenomanocarcinidae/Necrocarcinidae (Glaessner, 1960;Förster, 1970;Guinot et al, 2008) (Fig. 1C).…”